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| author | Richard Osborne <richard@xmos.com> | 2012-09-18 09:31:44 +0000 |
|---|---|---|
| committer | Richard Osborne <richard@xmos.com> | 2012-09-18 09:31:44 +0000 |
| commit | d7cc8b839cba201b552698646b624da7a79ede8e (patch) | |
| tree | 412b93a532a7dd14b1d7491fd584bbecdd4fb4b2 /test/Transforms/InstCombine/2012-09-17-ZeroSizedAlloca.ll | |
| parent | 97ecb83dffb5ff78ff84e9da21189268f52c63b2 (diff) | |
| download | llvm-d7cc8b839cba201b552698646b624da7a79ede8e.tar.gz llvm-d7cc8b839cba201b552698646b624da7a79ede8e.tar.bz2 llvm-d7cc8b839cba201b552698646b624da7a79ede8e.tar.xz | |
Fix instcombine to obey requested alignment when merging allocas.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164117 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine/2012-09-17-ZeroSizedAlloca.ll')
| -rw-r--r-- | test/Transforms/InstCombine/2012-09-17-ZeroSizedAlloca.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2012-09-17-ZeroSizedAlloca.ll b/test/Transforms/InstCombine/2012-09-17-ZeroSizedAlloca.ll new file mode 100644 index 0000000000..ba025e92b0 --- /dev/null +++ b/test/Transforms/InstCombine/2012-09-17-ZeroSizedAlloca.ll @@ -0,0 +1,24 @@ +; RUN: opt -S -instcombine < %s | FileCheck %s + +; When merging zero sized alloca check that requested alignments of the allocas +; are obeyed. + +@x = global i8* null, align 8 +@y = global i8* null, align 8 + +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" + +; CHECK: @f +; CHECK-NEXT: alloca [0 x i8], align 1024 +; CHECK-NOT: alloca +; CHECK: ret void +define void @f() { + %1 = alloca [0 x i8], align 1 + %2 = alloca [0 x i8], align 1024 + %3 = getelementptr inbounds [0 x i8]* %1, i64 0, i64 0 + %4 = getelementptr inbounds [0 x i8]* %2, i64 0, i64 0 + store i8* %3, i8** @x, align 8 + store i8* %4, i8** @y, align 8 + ret void +} |