diff options
Diffstat (limited to 'llvm/test/Transforms/NewGVN/load-constant-mem.ll')
| -rw-r--r-- | llvm/test/Transforms/NewGVN/load-constant-mem.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/Transforms/NewGVN/load-constant-mem.ll b/llvm/test/Transforms/NewGVN/load-constant-mem.ll new file mode 100644 index 00000000000..4c1624e09f6 --- /dev/null +++ b/llvm/test/Transforms/NewGVN/load-constant-mem.ll @@ -0,0 +1,21 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -basicaa -newgvn -S | FileCheck %s +; PR4189 +@G = external constant [4 x i32] + +define i32 @test(i8* %p, i32 %i) nounwind { +; CHECK-LABEL: @test( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[P:%.*]] = getelementptr [4 x i32], [4 x i32]* @G, i32 0, i32 [[I:%.*]] +; CHECK-NEXT: store i8 4, i8* [[P:%.*]] +; CHECK-NEXT: ret i32 0 +; +entry: + %P = getelementptr [4 x i32], [4 x i32]* @G, i32 0, i32 %i + %A = load i32, i32* %P + store i8 4, i8* %p + %B = load i32, i32* %P + %C = sub i32 %A, %B + ret i32 %C +} + |
