diff options
| author | Dan Gohman <gohman@apple.com> | 2009-09-14 23:39:10 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-09-14 23:39:10 +0000 |
| commit | f9eafce3af13c97afb5a16bd3f2b368fea0ffef1 (patch) | |
| tree | 5f9a502d2250096b0b3038e12515eaafbf535447 /llvm/test/Transforms/MemCpyOpt/align.ll | |
| parent | ad160c0330dd906cf616339f4fdce234739c89d3 (diff) | |
| download | bcm5719-llvm-f9eafce3af13c97afb5a16bd3f2b368fea0ffef1.tar.gz bcm5719-llvm-f9eafce3af13c97afb5a16bd3f2b368fea0ffef1.zip | |
When extending a memset range past the front, set the alignment of the
memset region to the alignment of the new start address.
llvm-svn: 81810
Diffstat (limited to 'llvm/test/Transforms/MemCpyOpt/align.ll')
| -rw-r--r-- | llvm/test/Transforms/MemCpyOpt/align.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/llvm/test/Transforms/MemCpyOpt/align.ll b/llvm/test/Transforms/MemCpyOpt/align.ll new file mode 100644 index 00000000000..a9d03378521 --- /dev/null +++ b/llvm/test/Transforms/MemCpyOpt/align.ll @@ -0,0 +1,18 @@ +; RUN: opt < %s -S -memcpyopt | FileCheck %s + +; The resulting memset is only 4-byte aligned, despite containing +; a 16-byte alignmed store in the middle. + +; CHECK: call void @llvm.memset.i64(i8* %a01, i8 0, i64 16, i32 4) + +define void @foo(i32* %p) { + %a0 = getelementptr i32* %p, i64 0 + store i32 0, i32* %a0, align 4 + %a1 = getelementptr i32* %p, i64 1 + store i32 0, i32* %a1, align 16 + %a2 = getelementptr i32* %p, i64 2 + store i32 0, i32* %a2, align 4 + %a3 = getelementptr i32* %p, i64 3 + store i32 0, i32* %a3, align 4 + ret void +} |
