diff options
| author | Dan Gohman <djg@cray.com> | 2007-07-18 16:29:46 +0000 |
|---|---|---|
| committer | Dan Gohman <djg@cray.com> | 2007-07-18 16:29:46 +0000 |
| commit | f17a25c88b892d30c2b41ba7ecdfbdfb2b4be9cc (patch) | |
| tree | ebb79ea1ee5e3bc1fdf38541a811a8b804f0679a /test/Analysis/LoadVN/call_pure_function.ll | |
| download | external_llvm-f17a25c88b892d30c2b41ba7ecdfbdfb2b4be9cc.zip external_llvm-f17a25c88b892d30c2b41ba7ecdfbdfb2b4be9cc.tar.gz external_llvm-f17a25c88b892d30c2b41ba7ecdfbdfb2b4be9cc.tar.bz2 | |
It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis/LoadVN/call_pure_function.ll')
| -rw-r--r-- | test/Analysis/LoadVN/call_pure_function.ll | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/test/Analysis/LoadVN/call_pure_function.ll b/test/Analysis/LoadVN/call_pure_function.ll new file mode 100644 index 0000000..302ae60 --- /dev/null +++ b/test/Analysis/LoadVN/call_pure_function.ll @@ -0,0 +1,13 @@ +; RUN: llvm-upgrade < %s | llvm-as | opt -basicaa -load-vn -gcse -instcombine | llvm-dis | not grep sub +declare int %strlen(sbyte*) +declare void %use(int %X) + +sbyte %test(sbyte* %P, sbyte* %Q) { + %A = load sbyte* %Q + %X = call int %strlen(sbyte* %P) + %B = load sbyte* %Q ;; CSE with A. + call void %use(int %X) ;; make strlen not dead + + %C = sub sbyte %A, %B + ret sbyte %C +} |