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Differential D72182 Diff 236201 llvm/test/Transforms/DeadStoreElimination/multiblock-barriers.ll

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llvm/test/Transforms/DeadStoreElimination/multiblock-barriers.ll

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt %s -basicaa -dse -enable-dse-memoryssa -S | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
declare void @unknown_func()
declare void @may_throw_func() readnone
declare void @may_argread_func(i32* ) nounwind readonly argmemonly
declare void @may_argwrite_func(i32* ) nounwind readonly argmemonly
declare void @may_read_func() nounwind readonly
declare void @may_write_func() nounwind readonly
declare void @llvm.lifetime.end.p0i32(i64, i32* nocapture) nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i1) nounwind
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
declare noalias i8* @malloc(i32)
declare void @free(i8* nocapture)
define void @test1(i32* %P) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 1, i32* %P
br label %bb1
bb1:
store i32 0, i32* %P
call void @unknown_func()
ret void
}
define void @test1B(i32* %P) {
; CHECK-LABEL: @test1B(
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret void
;
store i32 1, i32* %P
call void @unknown_func()
br label %bb1
bb1:
store i32 0, i32* %P
call void @unknown_func()
ret void
}
define void @test1C(i32* %P) {
; CHECK-LABEL: @test1C(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 1, i32* %P
br label %bb1
bb1:
call void @unknown_func()
store i32 0, i32* %P
ret void
}
define void @test2(i32* %P) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
call void @unknown_func()
br label %bb3
bb2:
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
; we could remove all the stores here.
define void @test3D() {
; CHECK-LABEL: @test3D(
; CHECK-NEXT: [[P:%.*]] = alloca i32, align 1
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret void
;
%P = alloca i32, i32 1, align 1
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 1, i32* %P
br label %bb3
bb3:
call void @unknown_func()
ret void
}
define void @test3A(i32* %P) {
; CHECK-LABEL: @test3A(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
call void @unknown_func()
br label %bb3
bb2:
store i32 0, i32* %P
call void @unknown_func()
br label %bb3
bb3:
ret void
}
define void @test3B(i32* %P) {
; CHECK-LABEL: @test3B(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 0, i32* %P
call void @unknown_func()
br label %bb3
bb3:
store i32 0, i32* %P
call void @unknown_func()
ret void
}
define void @testA3A(i32* %P) {
; CHECK-LABEL: @testA3A(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
call void @unknown_func()
store i32 0, i32* %P
br label %bb3
bb2:
store i32 0, i32* %P
call void @unknown_func()
br label %bb3
bb3:
ret void
}
define void @testA3B(i32* %P) {
; CHECK-LABEL: @testA3B(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
call void @unknown_func()
store i32 0, i32* %P
br label %bb3
bb3:
store i32 0, i32* %P
call void @unknown_func()
ret void
}
define void @testB3A(i32* %P) {
; CHECK-LABEL: @testB3A(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
call void @unknown_func()
br label %bb3
bb2:
call void @unknown_func()
store i32 0, i32* %P
br label %bb3
bb3:
ret void
}
define void @testB3B(i32* %P) {
; CHECK-LABEL: @testB3B(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 0, i32* %P
call void @unknown_func()
br label %bb3
bb3:
call void @unknown_func()
store i32 0, i32* %P
ret void
}
define void @test5(i32* %P) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret void
;
br i1 true, label %bb1, label %bb2
bb1:
call void @unknown_func()
store i32 1, i32* %P
br label %bb3
bb2:
call void @unknown_func()
store i32 1, i32* %P
br label %bb3
bb3:
store i32 0, i32* %P
call void @unknown_func()
ret void
}
define void @test5C(i32* %P) {
; CHECK-LABEL: @test5C(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
call void @unknown_func()
ret void
bb2:
store i32 1, i32* %P
call void @unknown_func()
br label %bb3
bb3:
ret void
}
define void @test5D(i32* %P) {
; CHECK-LABEL: @test5D(
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB4:%.*]]
; CHECK: bb4:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @unknown_func()
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
call void @unknown_func()
br label %bb4
bb4:
store i32 0, i32* %P
ret void
bb2:
store i32 1, i32* %P
call void @unknown_func()
br label %bb3
bb3:
ret void
}
define void @test6(i32* %P) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
call void @unknown_func()
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
define void @test6A(i32* %P) {
; CHECK-LABEL: @test6A(
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB4:%.*]]
; CHECK: bb4:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB5:%.*]]
; CHECK: bb5:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
br label %bb4
bb4:
call void @unknown_func()
br label %bb5
bb5:
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
define void @test14(i32* %P) {
; CHECK-LABEL: @test14(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret void
;
entry:
call void @unknown_func()
store i32 1, i32* %P
br label %for
for:
store i32 0, i32* %P
br i1 false, label %for, label %end
end:
call void @unknown_func()
ret void
}
define void @test14A(i32* %P) {
; CHECK-LABEL: @test14A(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
entry:
call void @unknown_func()
store i32 1, i32* %P
br label %for
for:
store i32 0, i32* %P
call void @unknown_func()
store i32 0, i32* %P
br i1 false, label %for, label %end
end:
store i32 0, i32* %P
call void @unknown_func()
store i32 0, i32* %P
ret void
}
define void @test14B(i32* %P) {
; CHECK-LABEL: @test14B(
; CHECK-NEXT: entry:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[FOR]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br i1 false, label [[BB1:%.*]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
entry:
store i32 0, i32* %P
call void @unknown_func()
store i32 0, i32* %P
br label %for
bb1:
store i32 0, i32* %P
call void @unknown_func()
store i32 0, i32* %P
br label %for
for:
store i32 0, i32* %P
call void @unknown_func()
store i32 0, i32* %P
br i1 false, label %bb1, label %end
end:
store i32 0, i32* %P
call void @unknown_func()
store i32 0, i32* %P
ret void
}
define void @test18(i32* %P) {
; CHECK-LABEL: @test18(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[P2:%.*]] = bitcast i32* [[P:%.*]] to i8*
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i8 1, i8* [[P2]]
; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[P]]
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: store i8 2, i8* [[P2]]
; CHECK-NEXT: ret void
;
entry:
%P2 = bitcast i32* %P to i8*
store i32 0, i32* %P
br label %for
for:
store i8 1, i8* %P2
%x = load i32, i32* %P
store i8 2, i8* %P2
br i1 false, label %for, label %end
end:
store i8 2, i8* %P2
ret void
}
define void @test19(i32* %P) {
; CHECK-LABEL: @test19(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ARRAYIDX0:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 1
; CHECK-NEXT: [[P3:%.*]] = bitcast i32* [[ARRAYIDX0]] to i8*
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[P3]], i8 0, i64 28, i1 false)
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, i32* [[P]], i64 1
; CHECK-NEXT: store i32 1, i32* [[ARRAYIDX1]], align 4
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
entry:
%arrayidx0 = getelementptr inbounds i32, i32* %P, i64 1
%p3 = bitcast i32* %arrayidx0 to i8*
call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 28, i32 4, i1 false)
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
%arrayidx1 = getelementptr inbounds i32, i32* %P, i64 1
store i32 1, i32* %arrayidx1, align 4
br label %bb3
bb3:
ret void
}
define void @test20(i32* %P) {
; CHECK-LABEL: @test20(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ARRAYIDX0:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 1
; CHECK-NEXT: [[P3:%.*]] = bitcast i32* [[ARRAYIDX0]] to i8*
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[P3]], i8 0, i64 28, i1 false)
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, i32* [[P]], i64 1
; CHECK-NEXT: store i32 1, i32* [[ARRAYIDX1]], align 4
; CHECK-NEXT: ret void
;
entry:
%arrayidx0 = getelementptr inbounds i32, i32* %P, i64 1
%p3 = bitcast i32* %arrayidx0 to i8*
call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 28, i32 4, i1 false)
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
br label %bb3
bb3:
%arrayidx1 = getelementptr inbounds i32, i32* %P, i64 1
store i32 1, i32* %arrayidx1, align 4
ret void
}
define void @test21(i32* %P) {
; CHECK-LABEL: @test21(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ARRAYIDX0:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 1
; CHECK-NEXT: [[P3:%.*]] = bitcast i32* [[ARRAYIDX0]] to i8*
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[P3]], i8 0, i64 28, i1 false)
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, i32* [[P]], i64 1
; CHECK-NEXT: store i32 1, i32* [[ARRAYIDX1]], align 4
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: ret void
;
entry:
%arrayidx0 = getelementptr inbounds i32, i32* %P, i64 1
%p3 = bitcast i32* %arrayidx0 to i8*
call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 28, i32 4, i1 false)
br label %for
for:
%arrayidx1 = getelementptr inbounds i32, i32* %P, i64 1
store i32 1, i32* %arrayidx1, align 4
br i1 false, label %for, label %end
end:
ret void
}
define void @test21A(i32* %P) {
; CHECK-LABEL: @test21A(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[P:%.*]]
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: [[X1:%.*]] = trunc i32 [[X]] to i1
; CHECK-NEXT: br i1 [[X1]], label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: ret void
;
entry:
br label %for
for:
%x = load i32, i32* %P
store i32 1, i32* %P, align 4
%x1 = trunc i32 %x to i1
br i1 %x1, label %for, label %end
end:
store i32 1, i32* %P, align 4
ret void
}
define i8* @test26() {
; CHECK-LABEL: @test26(
; CHECK-NEXT: bb1:
; CHECK-NEXT: br i1 true, label [[BB2:%.*]], label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[M:%.*]] = call noalias i8* @malloc(i32 10)
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: [[R:%.*]] = phi i8* [ null, [[BB1:%.*]] ], [ [[M]], [[BB2]] ]
; CHECK-NEXT: ret i8* null
;
bb1:
br i1 true, label %bb2, label %bb3
bb2:
%m = call noalias i8* @malloc(i32 10)
call void @unknown_func()
store i8 1, i8* %m
br label %bb3
bb3:
%r = phi i8* [ null, %bb1 ], [ %m, %bb2 ]
ret i8* null
}
define i8* @test28() {
; CHECK-LABEL: @test28(
; CHECK-NEXT: bb0:
; CHECK-NEXT: [[M:%.*]] = call noalias i8* @malloc(i32 10)
; CHECK-NEXT: [[MC0:%.*]] = bitcast i8* [[M]] to i8*
; CHECK-NEXT: [[MC1:%.*]] = bitcast i8* [[MC0]] to i8*
; CHECK-NEXT: [[MC2:%.*]] = bitcast i8* [[MC1]] to i8*
; CHECK-NEXT: [[MC3:%.*]] = bitcast i8* [[MC2]] to i8*
; CHECK-NEXT: [[MC4:%.*]] = bitcast i8* [[MC3]] to i8*
; CHECK-NEXT: [[MC5:%.*]] = bitcast i8* [[MC4]] to i8*
; CHECK-NEXT: [[MC6:%.*]] = bitcast i8* [[MC5]] to i8*
; CHECK-NEXT: [[M0:%.*]] = bitcast i8* [[MC6]] to i8*
; CHECK-NEXT: store i8 2, i8* [[M]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret i8* [[M0]]
;
bb0:
%m = call noalias i8* @malloc(i32 10)
%mc0 = bitcast i8* %m to i8*
%mc1 = bitcast i8* %mc0 to i8*
%mc2 = bitcast i8* %mc1 to i8*
%mc3 = bitcast i8* %mc2 to i8*
%mc4 = bitcast i8* %mc3 to i8*
%mc5 = bitcast i8* %mc4 to i8*
%mc6 = bitcast i8* %mc5 to i8*
%m0 = bitcast i8* %mc6 to i8*
store i8 2, i8* %m
call void @unknown_func()
ret i8* %m0
}
define i8* @test28A() {
; CHECK-LABEL: @test28A(
; CHECK-NEXT: bb0:
; CHECK-NEXT: [[M:%.*]] = call noalias i8* @malloc(i32 10)
; CHECK-NEXT: [[MC0:%.*]] = bitcast i8* [[M]] to i8*
; CHECK-NEXT: [[MC1:%.*]] = bitcast i8* [[MC0]] to i8*
; CHECK-NEXT: [[MC2:%.*]] = bitcast i8* [[MC1]] to i8*
; CHECK-NEXT: [[MC3:%.*]] = bitcast i8* [[MC2]] to i8*
; CHECK-NEXT: [[MC4:%.*]] = bitcast i8* [[MC3]] to i8*
; CHECK-NEXT: [[MC5:%.*]] = bitcast i8* [[MC4]] to i8*
; CHECK-NEXT: [[MC6:%.*]] = bitcast i8* [[MC5]] to i8*
; CHECK-NEXT: [[M0:%.*]] = bitcast i8* [[MC6]] to i8*
; CHECK-NEXT: store i8 2, i8* [[M0]]
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: ret i8* null
;
bb0:
%m = call noalias i8* @malloc(i32 10)
%mc0 = bitcast i8* %m to i8*
%mc1 = bitcast i8* %mc0 to i8*
%mc2 = bitcast i8* %mc1 to i8*
%mc3 = bitcast i8* %mc2 to i8*
%mc4 = bitcast i8* %mc3 to i8*
%mc5 = bitcast i8* %mc4 to i8*
%mc6 = bitcast i8* %mc5 to i8*
%m0 = bitcast i8* %mc6 to i8*
store i8 2, i8* %m0
call void @unknown_func()
ret i8* null
}
define void @test52(i32* %P, i1 %B) {
; CHECK-LABEL: @test52(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[FROMBOOL:%.*]] = zext i1 [[B:%.*]] to i8
; CHECK-NEXT: store i32 1, i32* [[P:%.*]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: [[TOBOOL:%.*]] = trunc i8 [[FROMBOOL]] to i1
; CHECK-NEXT: br i1 [[TOBOOL]], label [[IF_THEN:%.*]], label [[IF_END15:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[TOBOOL1:%.*]] = trunc i8 [[FROMBOOL]] to i1
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br i1 [[TOBOOL1]], label [[IF_THEN2:%.*]], label [[IF_ELSE:%.*]]
; CHECK: if.then2:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[IF_END14:%.*]]
; CHECK: if.else:
; CHECK-NEXT: [[TOBOOL3:%.*]] = trunc i8 [[FROMBOOL]] to i1
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: br i1 [[TOBOOL3]], label [[IF_THEN4:%.*]], label [[IF_ELSE5:%.*]]
; CHECK: if.then4:
; CHECK-NEXT: br label [[IF_END13:%.*]]
; CHECK: if.else5:
; CHECK-NEXT: [[TOBOOL6:%.*]] = trunc i8 [[FROMBOOL]] to i1
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: br i1 [[TOBOOL6]], label [[IF_THEN7:%.*]], label [[IF_ELSE8:%.*]]
; CHECK: if.then7:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[IF_END12:%.*]]
; CHECK: if.else8:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: br label [[WHILE_COND:%.*]]
; CHECK: while.cond:
; CHECK-NEXT: [[TOBOOL9:%.*]] = trunc i8 [[FROMBOOL]] to i1
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br i1 [[TOBOOL9]], label [[WHILE_BODY:%.*]], label [[WHILE_END:%.*]]
; CHECK: while.body:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br i1 [[B]], label [[IF_THEN11:%.*]], label [[IF_END:%.*]]
; CHECK: if.then11:
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: br label [[WHILE_COND]]
; CHECK: while.end:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[IF_END12]]
; CHECK: if.end12:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: br label [[IF_END13]]
; CHECK: if.end13:
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[IF_END14]]
; CHECK: if.end14:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[IF_END15]]
; CHECK: if.end15:
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: store i32 1, i32* [[P]], align 4
; CHECK-NEXT: ret void
;
entry:
%frombool = zext i1 %B to i8
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
%tobool = trunc i8 %frombool to i1
br i1 %tobool, label %if.then, label %if.end15
if.then: ; preds = %entry
%tobool1 = trunc i8 %frombool to i1
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br i1 %tobool1, label %if.then2, label %if.else
if.then2: ; preds = %if.then
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br label %if.end14
if.else: ; preds = %if.then
%tobool3 = trunc i8 %frombool to i1
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br i1 %tobool3, label %if.then4, label %if.else5
if.then4: ; preds = %if.else
br label %if.end13
if.else5: ; preds = %if.else
%tobool6 = trunc i8 %frombool to i1
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br i1 %tobool6, label %if.then7, label %if.else8
if.then7: ; preds = %if.else5
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br label %if.end12
if.else8: ; preds = %if.else5
call void @unknown_func()
store i32 1, i32* %P, align 4
br label %while.cond
while.cond: ; preds = %if.end, %if.else8
%tobool9 = trunc i8 %frombool to i1
call void @unknown_func()
store i32 1, i32* %P, align 4
br i1 %tobool9, label %while.body, label %while.end
while.body: ; preds = %while.cond
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br i1 %B, label %if.then11, label %if.end
if.then11: ; preds = %while.body
store i32 1, i32* %P, align 4
store i32 1, i32* %P, align 4
br label %if.end
if.end: ; preds = %if.then11, %while.body
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br label %while.cond
while.end: ; preds = %while.cond
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br label %if.end12
if.end12: ; preds = %while.end, %if.then7
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br label %if.end13
if.end13: ; preds = %if.end12, %if.then4
call void @unknown_func()
store i32 1, i32* %P, align 4
br label %if.end14
if.end14: ; preds = %if.end13, %if.then2
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
br label %if.end15
if.end15: ; preds = %if.end14, %entry
store i32 1, i32* %P, align 4
call void @unknown_func()
store i32 1, i32* %P, align 4
ret void
}
define void @test57(i32* %P, i1 zeroext %B) #0 {
; CHECK-LABEL: @test57(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 false, label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* [[P:%.*]] to i64*
; CHECK-NEXT: store i64 0, i64* [[TMP0]], align 8
; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds i32, i32* [[P]], i64 1
; CHECK-NEXT: store i32 1, i32* [[ADD_PTR]], align 4
; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[P]], align 4
; CHECK-NEXT: [[TOBOOL1:%.*]] = icmp ne i32 [[TMP1]], 0
; CHECK-NEXT: [[FROMBOOL2:%.*]] = zext i1 [[TOBOOL1]] to i8
; CHECK-NEXT: call void @unknown_func()
; CHECK-NEXT: br label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: store i32 0, i32* [[P]], align 4
; CHECK-NEXT: ret void
;
entry:
store i32 1, i32* %P, align 4
br i1 0, label %if.then, label %if.end
if.then: ; preds = %entry
%0 = bitcast i32* %P to i64*
store i64 0, i64* %0, align 8
%add.ptr = getelementptr inbounds i32, i32* %P, i64 1
store i32 1, i32* %add.ptr, align 4
%1 = load i32, i32* %P, align 4
%tobool1 = icmp ne i32 %1, 0
%frombool2 = zext i1 %tobool1 to i8
call void @unknown_func()
br label %if.end
if.end: ; preds = %if.then, %entry
store i32 0, i32* %P, align 4
ret void
}
; ------
define void @Atest1(i32* %P) {
; CHECK-LABEL: @Atest1(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 1, i32* %P
br label %bb1
bb1:
store i32 0, i32* %P
call void @may_throw_func()
ret void
}
define void @Atest1B(i32* %P) {
; CHECK-LABEL: @Atest1B(
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: ret void
;
store i32 1, i32* %P
call void @may_throw_func()
br label %bb1
bb1:
store i32 0, i32* %P
call void @may_throw_func()
ret void
}
define void @Atest1C(i32* %P) {
; CHECK-LABEL: @Atest1C(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 1, i32* %P
br label %bb1
bb1:
call void @may_throw_func()
store i32 0, i32* %P
ret void
}
define void @Atest2(i32* %P) {
; CHECK-LABEL: @Atest2(
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
call void @may_throw_func()
br label %bb3
bb2:
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
; we could remove all stores here
define void @Atest3D() {
; CHECK-LABEL: @Atest3D(
; CHECK-NEXT: [[P:%.*]] = alloca i32, align 1
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: ret void
;
%P = alloca i32, i32 1, align 1
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 1, i32* %P
br label %bb3
bb3:
call void @may_throw_func()
ret void
}
define void @Atest3A(i32* %P) {
; CHECK-LABEL: @Atest3A(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
call void @may_throw_func()
br label %bb3
bb2:
store i32 0, i32* %P
call void @may_throw_func()
br label %bb3
bb3:
ret void
}
define void @Atest3B(i32* %P) {
; CHECK-LABEL: @Atest3B(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 0, i32* %P
call void @may_throw_func()
br label %bb3
bb3:
store i32 0, i32* %P
call void @may_throw_func()
ret void
}
define void @AtestA3A(i32* %P) {
; CHECK-LABEL: @AtestA3A(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
call void @may_throw_func()
store i32 0, i32* %P
br label %bb3
bb2:
store i32 0, i32* %P
call void @may_throw_func()
br label %bb3
bb3:
ret void
}
define void @AtestA3B(i32* %P) {
; CHECK-LABEL: @AtestA3B(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
call void @may_throw_func()
store i32 0, i32* %P
br label %bb3
bb3:
store i32 0, i32* %P
call void @may_throw_func()
ret void
}
define void @AtestB3A(i32* %P) {
; CHECK-LABEL: @AtestB3A(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
call void @may_throw_func()
br label %bb3
bb2:
call void @may_throw_func()
store i32 0, i32* %P
br label %bb3
bb3:
ret void
}
define void @AtestB3B(i32* %P) {
; CHECK-LABEL: @AtestB3B(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 0, i32* %P
call void @may_throw_func()
br label %bb3
bb3:
call void @may_throw_func()
store i32 0, i32* %P
ret void
}
define void @Atest5(i32* %P) {
; CHECK-LABEL: @Atest5(
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: ret void
;
br i1 true, label %bb1, label %bb2
bb1:
call void @may_throw_func()
store i32 1, i32* %P
br label %bb3
bb2:
call void @may_throw_func()
store i32 1, i32* %P
br label %bb3
bb3:
store i32 0, i32* %P
call void @may_throw_func()
ret void
}
define void @Atest5C(i32* %P) {
; CHECK-LABEL: @Atest5C(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
call void @may_throw_func()
ret void
bb2:
store i32 1, i32* %P
call void @may_throw_func()
br label %bb3
bb3:
ret void
}
define void @Atest5D(i32* %P) {
; CHECK-LABEL: @Atest5D(
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB4:%.*]]
; CHECK: bb4:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
call void @may_throw_func()
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
call void @may_throw_func()
br label %bb4
bb4:
store i32 0, i32* %P
ret void
bb2:
store i32 1, i32* %P
call void @may_throw_func()
br label %bb3
bb3:
ret void
}
define void @Atest6(i32* %P) {
; CHECK-LABEL: @Atest6(
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
call void @may_throw_func()
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
define void @Atest6A(i32* %P) {
; CHECK-LABEL: @Atest6A(
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB4:%.*]]
; CHECK: bb4:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[BB5:%.*]]
; CHECK: bb5:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
br label %bb4
bb4:
call void @may_throw_func()
br label %bb5
bb5:
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
define void @Atest14(i32* %P) {
; CHECK-LABEL: @Atest14(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: ret void
;
entry:
call void @may_throw_func()
store i32 1, i32* %P
br label %for
for:
store i32 0, i32* %P
br i1 false, label %for, label %end
end:
call void @may_throw_func()
ret void
}
define void @Atest14A(i32* %P) {
; CHECK-LABEL: @Atest14A(
; CHECK-NEXT: entry:
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
entry:
call void @may_throw_func()
store i32 1, i32* %P
br label %for
for:
store i32 0, i32* %P
call void @may_throw_func()
store i32 0, i32* %P
br i1 false, label %for, label %end
end:
store i32 0, i32* %P
call void @may_throw_func()
store i32 0, i32* %P
ret void
}
define void @Atest14B(i32* %P) {
; CHECK-LABEL: @Atest14B(
; CHECK-NEXT: entry:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br label [[FOR]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: br i1 false, label [[BB1:%.*]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: call void @may_throw_func()
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
entry:
store i32 0, i32* %P
call void @may_throw_func()
store i32 0, i32* %P
br label %for
bb1:
store i32 0, i32* %P
call void @may_throw_func()
store i32 0, i32* %P
br label %for
for:
store i32 0, i32* %P
call void @may_throw_func()
store i32 0, i32* %P
br i1 false, label %bb1, label %end
end:
store i32 0, i32* %P
call void @may_throw_func()
store i32 0, i32* %P
ret void
}
; ------
define void @Btest1(i32* %P) {
; CHECK-LABEL: @Btest1(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 1, i32* %P
br label %bb1
bb1:
store i32 0, i32* %P
fence seq_cst
ret void
}
define void @Btest1B(i32* %P) {
; CHECK-LABEL: @Btest1B(
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
;
store i32 1, i32* %P
fence seq_cst
br label %bb1
bb1:
store i32 0, i32* %P
fence seq_cst
ret void
}
define void @Btest1C(i32* %P) {
; CHECK-LABEL: @Btest1C(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 1, i32* %P
br label %bb1
bb1:
fence seq_cst
store i32 0, i32* %P
ret void
}
define void @Btest2(i32* %P) {
; CHECK-LABEL: @Btest2(
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
fence seq_cst
br label %bb3
bb2:
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
; we could remove all the stores here.
define void @Btest3D() {
; CHECK-LABEL: @Btest3D(
; CHECK-NEXT: [[P:%.*]] = alloca i32, align 1
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
;
%P = alloca i32, i32 1, align 1
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 1, i32* %P
br label %bb3
bb3:
fence seq_cst
ret void
}
define void @Btest3A(i32* %P) {
; CHECK-LABEL: @Btest3A(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
fence seq_cst
br label %bb3
bb2:
store i32 0, i32* %P
fence seq_cst
br label %bb3
bb3:
ret void
}
define void @Btest3B(i32* %P) {
; CHECK-LABEL: @Btest3B(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 0, i32* %P
fence seq_cst
br label %bb3
bb3:
store i32 0, i32* %P
fence seq_cst
ret void
}
define void @BtestA3A(i32* %P) {
; CHECK-LABEL: @BtestA3A(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
fence seq_cst
store i32 0, i32* %P
br label %bb3
bb2:
store i32 0, i32* %P
fence seq_cst
br label %bb3
bb3:
ret void
}
define void @BtestA3B(i32* %P) {
; CHECK-LABEL: @BtestA3B(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
fence seq_cst
store i32 0, i32* %P
br label %bb3
bb3:
store i32 0, i32* %P
fence seq_cst
ret void
}
define void @BtestB3A(i32* %P) {
; CHECK-LABEL: @BtestB3A(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
fence seq_cst
br label %bb3
bb2:
fence seq_cst
store i32 0, i32* %P
br label %bb3
bb3:
ret void
}
define void @BtestB3B(i32* %P) {
; CHECK-LABEL: @BtestB3B(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
store i32 0, i32* %P
fence seq_cst
br label %bb3
bb3:
fence seq_cst
store i32 0, i32* %P
ret void
}
define void @Btest5(i32* %P) {
; CHECK-LABEL: @Btest5(
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
;
br i1 true, label %bb1, label %bb2
bb1:
fence seq_cst
store i32 1, i32* %P
br label %bb3
bb2:
fence seq_cst
store i32 1, i32* %P
br label %bb3
bb3:
store i32 0, i32* %P
fence seq_cst
ret void
}
define void @Btest5C(i32* %P) {
; CHECK-LABEL: @Btest5C(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
store i32 0, i32* %P
fence seq_cst
ret void
bb2:
store i32 1, i32* %P
fence seq_cst
br label %bb3
bb3:
ret void
}
define void @Btest5D(i32* %P) {
; CHECK-LABEL: @Btest5D(
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 1, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB4:%.*]]
; CHECK: bb4:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
; CHECK: bb2:
; CHECK-NEXT: store i32 1, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb3:
; CHECK-NEXT: ret void
;
fence seq_cst
store i32 1, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
fence seq_cst
br label %bb4
bb4:
store i32 0, i32* %P
ret void
bb2:
store i32 1, i32* %P
fence seq_cst
br label %bb3
bb3:
ret void
}
define void @Btest6(i32* %P) {
; CHECK-LABEL: @Btest6(
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
fence seq_cst
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
define void @Btest6A(i32* %P) {
; CHECK-LABEL: @Btest6A(
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 true, label [[BB1:%.*]], label [[BB2:%.*]]
; CHECK: bb1:
; CHECK-NEXT: br label [[BB3:%.*]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB4:%.*]]
; CHECK: bb4:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[BB5:%.*]]
; CHECK: bb5:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
store i32 0, i32* %P
br i1 true, label %bb1, label %bb2
bb1:
br label %bb3
bb2:
br label %bb4
bb4:
fence seq_cst
br label %bb5
bb5:
br label %bb3
bb3:
store i32 0, i32* %P
ret void
}
define void @Btest14(i32* %P) {
; CHECK-LABEL: @Btest14(
; CHECK-NEXT: entry:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: ret void
;
entry:
fence seq_cst
store i32 1, i32* %P
br label %for
for:
store i32 0, i32* %P
br i1 false, label %for, label %end
end:
fence seq_cst
ret void
}
define void @Btest14A(i32* %P) {
; CHECK-LABEL: @Btest14A(
; CHECK-NEXT: entry:
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
entry:
fence seq_cst
store i32 1, i32* %P
br label %for
for:
store i32 0, i32* %P
fence seq_cst
store i32 0, i32* %P
br i1 false, label %for, label %end
end:
store i32 0, i32* %P
fence seq_cst
store i32 0, i32* %P
ret void
}
define void @Btest14B(i32* %P) {
; CHECK-LABEL: @Btest14B(
; CHECK-NEXT: entry:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: bb1:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br label [[FOR]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: br i1 false, label [[BB1:%.*]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: fence seq_cst
; CHECK-NEXT: store i32 0, i32* [[P]]
; CHECK-NEXT: ret void
;
entry:
store i32 0, i32* %P
fence seq_cst
store i32 0, i32* %P
br label %for
bb1:
store i32 0, i32* %P
fence seq_cst
store i32 0, i32* %P
br label %for
for:
store i32 0, i32* %P
fence seq_cst
store i32 0, i32* %P
br i1 false, label %bb1, label %end
end:
store i32 0, i32* %P
fence seq_cst
store i32 0, i32* %P
ret void
}