diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/MemCpyOpt/memcpy-undef.ll | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/test/Transforms/MemCpyOpt/memcpy-undef.ll b/test/Transforms/MemCpyOpt/memcpy-undef.ll new file mode 100644 index 0000000000..fd4965f4dc --- /dev/null +++ b/test/Transforms/MemCpyOpt/memcpy-undef.ll @@ -0,0 +1,25 @@ +; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.8.0" + +%struct.foo = type { i8, [7 x i8], i32 } + +define i32 @test1(%struct.foo* nocapture %foobie) nounwind noinline ssp uwtable { + %bletch.sroa.1 = alloca [7 x i8], align 1 + %1 = getelementptr inbounds %struct.foo* %foobie, i64 0, i32 0 + store i8 98, i8* %1, align 4 + %2 = getelementptr inbounds %struct.foo* %foobie, i64 0, i32 1, i64 0 + %3 = getelementptr inbounds [7 x i8]* %bletch.sroa.1, i64 0, i64 0 + call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 7, i32 1, i1 false) + %4 = getelementptr inbounds %struct.foo* %foobie, i64 0, i32 2 + store i32 20, i32* %4, align 4 + ret i32 undef + +; Check that the memcpy is removed. +; CHECK-LABEL: @test1( +; CHECK-NOT: call void @llvm.memcpy +} + +declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind + |