diff options
| author | Nick Lewycky <nicholas@mxc.ca> | 2006-10-22 21:36:41 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2006-10-22 21:36:41 +0000 |
| commit | 5062250f361999975c6f1ff306dc3a365dc32e1b (patch) | |
| tree | f93c45f5386285e2d701857036e081ccc3584998 /test | |
| parent | 96f5362ff29bb91baf48caed92637c7bb2ffd8d1 (diff) | |
| download | external_llvm-5062250f361999975c6f1ff306dc3a365dc32e1b.zip external_llvm-5062250f361999975c6f1ff306dc3a365dc32e1b.tar.gz external_llvm-5062250f361999975c6f1ff306dc3a365dc32e1b.tar.bz2 | |
Handle "if ((x|y) != 0)" for ints like we do for bools. Fixes missed
optimization opportunity pointed out by Chris Lattner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31118 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/PredicateSimplifier/2006-10-22-IntOr.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/Transforms/PredicateSimplifier/2006-10-22-IntOr.ll b/test/Transforms/PredicateSimplifier/2006-10-22-IntOr.ll new file mode 100644 index 0000000..181952b --- /dev/null +++ b/test/Transforms/PredicateSimplifier/2006-10-22-IntOr.ll @@ -0,0 +1,21 @@ +; RUN: llvm-as < %s | opt -predsimplify -instcombine -simplifycfg | llvm-dis | grep -v declare | not grep fail + +int %f(int %x, int %y) { +entry: + %tmp2 = or int %x, %y ; <int> [#uses=1] + %tmp = setne int %tmp2, 0 ; <bool> [#uses=1] + br bool %tmp, label %cond_true, label %return + +cond_true: ; preds = %entry + %tmp4 = seteq int %x, 0 ; <bool> [#uses=1] + br bool %tmp4, label %cond_true5, label %return + +cond_true5: ; preds = %cond_true + %tmp6 = call int %fail( ) ; <int> [#uses=0] + ret int %tmp6 + +return: ; preds = %cond_next7 + ret int 0 +} + +declare int %fail() |