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| author | Chris Lattner <sabre@nondot.org> | 2010-12-09 07:39:50 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-12-09 07:39:50 +0000 |
| commit | fd51c52ef6b9ad28b271ca27cf6ae24075a838d9 (patch) | |
| tree | 7780bdaca3c12069f087120bd30f1753c4aca613 /llvm/test/Transforms/MemCpyOpt | |
| parent | 98471a2885d23dc99086fe8bb151fa3a60889123 (diff) | |
| download | bcm5719-llvm-fd51c52ef6b9ad28b271ca27cf6ae24075a838d9.tar.gz bcm5719-llvm-fd51c52ef6b9ad28b271ca27cf6ae24075a838d9.zip | |
fix PR8753, eliminating a case where we'd infinitely make a
substitution because it doesn't actually change the IR. Patch by
Jakub Staszak!
llvm-svn: 121361
Diffstat (limited to 'llvm/test/Transforms/MemCpyOpt')
| -rw-r--r-- | llvm/test/Transforms/MemCpyOpt/crash.ll | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/llvm/test/Transforms/MemCpyOpt/crash.ll b/llvm/test/Transforms/MemCpyOpt/crash.ll index bf5b2346757..cc3a6b05278 100644 --- a/llvm/test/Transforms/MemCpyOpt/crash.ll +++ b/llvm/test/Transforms/MemCpyOpt/crash.ll @@ -1,5 +1,4 @@ -; RUN: opt < %s -memcpyopt -disable-output -; PR4882 +; RUN: opt < %s -basicaa -memcpyopt -disable-output target datalayout = "e-p:32:32:32-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" target triple = "armv7-eabi" @@ -7,7 +6,8 @@ target triple = "armv7-eabi" %struct.qw = type { [4 x float] } %struct.bar = type { %struct.qw, %struct.qw, %struct.qw, %struct.qw, %struct.qw, float, float} -define arm_aapcs_vfpcc void @test1(%struct.bar* %this) { +; PR4882 +define void @test1(%struct.bar* %this) { entry: %0 = getelementptr inbounds %struct.bar* %this, i32 0, i32 0, i32 0, i32 0 store float 0.000000e+00, float* %0, align 4 @@ -43,3 +43,16 @@ entry: store float 0.000000e+00, float* %15, align 4 unreachable } + +; PR8753 + +declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, +i1) nounwind + +define void @test2(i32 %cmd) nounwind { + call void @llvm.memcpy.p0i8.p0i8.i64(i8* undef, i8* undef, i64 20, i32 1, i1 +false) nounwind + call void @llvm.memcpy.p0i8.p0i8.i64(i8* null, i8* undef, i64 20, i32 1, i1 +false) nounwind + ret void +} |
