diff --git a/llvm/test/CodeGen/Generic/addr-use-count.ll b/llvm/test/CodeGen/Generic/addr-use-count.ll new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/Generic/addr-use-count.ll @@ -0,0 +1,70 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt -S -codegenprepare < %s | FileCheck %s +; REQUIRES: aarch64-registered-target + +; Test that `%addr` is sunk, even though the number of memory uses to scan exceeds the limit. + +target triple = "aarch64-linux" + +declare void @g(...) + +define void @f(ptr %p) { +; CHECK-LABEL: @f( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[SUNKADDR:%.*]] = getelementptr i8, ptr [[P:%.*]], i64 4 +; CHECK-NEXT: [[T0:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T1:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T2:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T3:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T4:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T5:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T6:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T7:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T8:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T9:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T10:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T11:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T12:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T13:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T14:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T15:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T16:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T17:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[T18:%.*]] = load i32, ptr [[SUNKADDR]], align 4 +; CHECK-NEXT: [[SUNKADDR1:%.*]] = getelementptr i8, ptr [[P]], i64 8 +; CHECK-NEXT: [[T19:%.*]] = load i32, ptr [[SUNKADDR1]], align 4 +; CHECK-NEXT: call void @g(i32 [[T0]], i32 [[T1]], i32 [[T2]], i32 [[T3]], i32 [[T4]], i32 [[T5]], i32 [[T6]], i32 [[T7]], i32 [[T8]], i32 [[T9]], i32 [[T10]], i32 [[T11]], i32 [[T12]], i32 [[T13]], i32 [[T14]], i32 [[T15]], i32 [[T16]], i32 [[T17]], i32 [[T18]], i32 [[T19]]) +; CHECK-NEXT: ret void +; +entry: + %addr = getelementptr i8, ptr %p, i32 4 + br label %exit + +exit: + %t0 = load i32, ptr %addr + %t1 = load i32, ptr %addr + %t2 = load i32, ptr %addr + %t3 = load i32, ptr %addr + %t4 = load i32, ptr %addr + %t5 = load i32, ptr %addr + %t6 = load i32, ptr %addr + %t7 = load i32, ptr %addr + %t8 = load i32, ptr %addr + %t9 = load i32, ptr %addr + %t10 = load i32, ptr %addr + %t11 = load i32, ptr %addr + %t12 = load i32, ptr %addr + %t13 = load i32, ptr %addr + %t14 = load i32, ptr %addr + %t15 = load i32, ptr %addr + %t16 = load i32, ptr %addr + %t17 = load i32, ptr %addr + %t18 = load i32, ptr %addr + %addr.1 = getelementptr i8, ptr %addr, i32 4 + %t19 = load i32, ptr %addr.1 + + call void @g(i32 %t0, i32 %t1, i32 %t2, i32 %t3, i32 %t4, i32 %t5, i32 %t6, i32 %t7, + i32 %t8, i32 %t9, i32 %t10, i32 %t11, i32 %t12, i32 %t13, i32 %t14, i32 %t15, i32 %t16, + i32 %t17, i32 %t18, i32 %t19) + ret void +}