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Diffstat (limited to 'test/Transforms/MemCpyOpt/capturing-func.ll')
| -rw-r--r-- | test/Transforms/MemCpyOpt/capturing-func.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/MemCpyOpt/capturing-func.ll b/test/Transforms/MemCpyOpt/capturing-func.ll new file mode 100644 index 0000000..17614fd --- /dev/null +++ b/test/Transforms/MemCpyOpt/capturing-func.ll @@ -0,0 +1,22 @@ +; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s + +target datalayout = "e" + +declare void @foo(i8*) +declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind + +define void @test() { + %ptr1 = alloca i8 + %ptr2 = alloca i8 + call void @foo(i8* %ptr2) + call void @llvm.memcpy.p0i8.p0i8.i32(i8* %ptr1, i8* %ptr2, i32 1, i32 1, i1 false) + call void @foo(i8* %ptr1) + ret void + + ; Check that the transformation isn't applied if the called function can + ; capture the pointer argument (i.e. the nocapture attribute isn't present) + ; CHECK-LABEL: @test( + ; CHECK: call void @foo(i8* %ptr2) + ; CHECK-NEXT: call void @llvm.memcpy + ; CHECK-NEXT: call void @foo(i8* %ptr1) +} |