diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp --- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp +++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp @@ -1405,6 +1405,9 @@ UP.UpperBound = true; UP.UnrollRemainder = true; UP.DefaultUnrollRuntimeCount = 4; + + UP.UnrollAndJam = true; + UP.UnrollAndJamInnerLoopThreshold = 60; } } diff --git a/llvm/test/CodeGen/AArch64/aarch64-unroll-and-jam.ll b/llvm/test/CodeGen/AArch64/aarch64-unroll-and-jam.ll new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/AArch64/aarch64-unroll-and-jam.ll @@ -0,0 +1,104 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt -aa-pipeline=tbaa,basic-aa -passes='dse,loop-unroll-and-jam' < %s -mcpu=cortex-a55 -mtriple=aarch64-none-linux-eabi -S | FileCheck %s + +target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" + +define void @unj(i32 %I, i32 %argj, i32* noalias nocapture %A, i32* noalias nocapture readonly %B) #0 { +; CHECK-LABEL: @unj( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[ARGJ:%.*]], 0 +; CHECK-NEXT: br i1 [[CMP]], label [[FOR_END:%.*]], label [[FOR_PREHEADER:%.*]] +; CHECK: for.preheader: +; CHECK-NEXT: br label [[FOR_OUTER:%.*]] +; CHECK: for.outer: +; CHECK-NEXT: br label [[FOR_INNER:%.*]] +; CHECK: for.inner: +; CHECK-NEXT: [[J:%.*]] = phi i32 [ 0, [[FOR_OUTER]] ], [ [[INC:%.*]], [[FOR_INNER]] ] +; CHECK-NEXT: [[SUM:%.*]] = phi i32 [ 0, [[FOR_OUTER]] ], [ [[ADD:%.*]], [[FOR_INNER]] ] +; CHECK-NEXT: [[J_1:%.*]] = phi i32 [ 0, [[FOR_OUTER]] ], [ [[INC_1:%.*]], [[FOR_INNER]] ] +; CHECK-NEXT: [[SUM_1:%.*]] = phi i32 [ 0, [[FOR_OUTER]] ], [ [[ADD_1:%.*]], [[FOR_INNER]] ] +; CHECK-NEXT: [[J_2:%.*]] = phi i32 [ 0, [[FOR_OUTER]] ], [ [[INC_2:%.*]], [[FOR_INNER]] ] +; CHECK-NEXT: [[SUM_2:%.*]] = phi i32 [ 0, [[FOR_OUTER]] ], [ [[ADD_2:%.*]], [[FOR_INNER]] ] +; CHECK-NEXT: [[J_3:%.*]] = phi i32 [ 0, [[FOR_OUTER]] ], [ [[INC_3:%.*]], [[FOR_INNER]] ] +; CHECK-NEXT: [[SUM_3:%.*]] = phi i32 [ 0, [[FOR_OUTER]] ], [ [[ADD_3:%.*]], [[FOR_INNER]] ] +; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i32 [[J]] +; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4, !tbaa [[TBAA0:![0-9]+]] +; CHECK-NEXT: [[SUB:%.*]] = add i32 [[SUM]], 10 +; CHECK-NEXT: [[ADD]] = sub i32 [[SUB]], [[TMP0]] +; CHECK-NEXT: [[INC]] = add nuw i32 [[J]], 1 +; CHECK-NEXT: [[ARRAYIDX_1:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[J_1]] +; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX_1]], align 4, !tbaa [[TBAA0]] +; CHECK-NEXT: [[SUB_1:%.*]] = add i32 [[SUM_1]], 10 +; CHECK-NEXT: [[ADD_1]] = sub i32 [[SUB_1]], [[TMP1]] +; CHECK-NEXT: [[INC_1]] = add nuw i32 [[J_1]], 1 +; CHECK-NEXT: [[ARRAYIDX_2:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[J_2]] +; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX_2]], align 4, !tbaa [[TBAA0]] +; CHECK-NEXT: [[SUB_2:%.*]] = add i32 [[SUM_2]], 10 +; CHECK-NEXT: [[ADD_2]] = sub i32 [[SUB_2]], [[TMP2]] +; CHECK-NEXT: [[INC_2]] = add nuw i32 [[J_2]], 1 +; CHECK-NEXT: [[ARRAYIDX_3:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[J_3]] +; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[ARRAYIDX_3]], align 4, !tbaa [[TBAA0]] +; CHECK-NEXT: [[SUB_3:%.*]] = add i32 [[SUM_3]], 10 +; CHECK-NEXT: [[ADD_3]] = sub i32 [[SUB_3]], [[TMP3]] +; CHECK-NEXT: [[INC_3]] = add nuw i32 [[J_3]], 1 +; CHECK-NEXT: [[EXITCOND_3:%.*]] = icmp eq i32 [[INC_3]], [[ARGJ]] +; CHECK-NEXT: br i1 [[EXITCOND_3]], label [[FOR_LATCH:%.*]], label [[FOR_INNER]] +; CHECK: for.latch: +; CHECK-NEXT: [[ADD_LCSSA:%.*]] = phi i32 [ [[ADD]], [[FOR_INNER]] ] +; CHECK-NEXT: [[ADD_LCSSA_1:%.*]] = phi i32 [ [[ADD_1]], [[FOR_INNER]] ] +; CHECK-NEXT: [[ADD_LCSSA_2:%.*]] = phi i32 [ [[ADD_2]], [[FOR_INNER]] ] +; CHECK-NEXT: [[ADD_LCSSA_3:%.*]] = phi i32 [ [[ADD_3]], [[FOR_INNER]] ] +; CHECK-NEXT: store i32 [[ADD_LCSSA]], i32* [[A:%.*]], align 4, !tbaa [[TBAA0]] +; CHECK-NEXT: [[ARRAYIDX6_1:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 1 +; CHECK-NEXT: store i32 [[ADD_LCSSA_1]], i32* [[ARRAYIDX6_1]], align 4, !tbaa [[TBAA0]] +; CHECK-NEXT: [[ARRAYIDX6_2:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 2 +; CHECK-NEXT: store i32 [[ADD_LCSSA_2]], i32* [[ARRAYIDX6_2]], align 4, !tbaa [[TBAA0]] +; CHECK-NEXT: [[ARRAYIDX6_3:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 3 +; CHECK-NEXT: store i32 [[ADD_LCSSA_3]], i32* [[ARRAYIDX6_3]], align 4, !tbaa [[TBAA0]] +; CHECK-NEXT: br label [[FOR_END_LOOPEXIT:%.*]] +; CHECK: for.end.loopexit: +; CHECK-NEXT: br label [[FOR_END]] +; CHECK: for.end: +; CHECK-NEXT: ret void +; +entry: + %cmp = icmp eq i32 %argj, 0 + br i1 %cmp, label %for.end, label %for.preheader + +for.preheader: + br label %for.outer + +for.outer: + %i = phi i32 [ %add8, %for.latch ], [ 0, %for.preheader ] + %arrayidx.outer = getelementptr inbounds i32, i32* %A, i32 %i + store i32 0, i32* %arrayidx.outer, align 4, !tbaa !5 + br label %for.inner + +for.inner: + %j = phi i32 [ 0, %for.outer ], [ %inc, %for.inner ] + %sum = phi i32 [ 0, %for.outer ], [ %add, %for.inner ] + %arrayidx = getelementptr inbounds i32, i32* %B, i32 %j + %0 = load i32, i32* %arrayidx, align 4, !tbaa !5 + %sub = add i32 %sum, 10 + %add = sub i32 %sub, %0 + %inc = add nuw i32 %j, 1 + %exitcond = icmp eq i32 %inc, %argj + br i1 %exitcond, label %for.latch, label %for.inner + +for.latch: + %arrayidx6 = getelementptr inbounds i32, i32* %A, i32 %i + store i32 %add, i32* %arrayidx6, align 4, !tbaa !5 + %add8 = add nuw nsw i32 %i, 1 + %exitcond23 = icmp eq i32 %add8, 4 + br i1 %exitcond23, label %for.end, label %for.outer + +for.end: + ret void +} + +!5 = !{!6, !6, i64 0} +!6 = !{!"int", !7, i64 0} +!7 = !{!"omnipotent char", !8, i64 0} +!8 = !{!"Simple C/C++ TBAA"} +!9 = !{!10, !10, i64 0} +!10 = !{!"short", !7, i64 0}