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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2012-04-30 03:53:06 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2012-04-30 03:53:06 +0000 |
| commit | 9719cf329bc398191c65cd1c8cb1161d11c5e947 (patch) | |
| tree | 010dfa3bb3251047de6c64f1d50f8e361bed7b26 /test/Transforms/LoopStrengthReduce | |
| parent | 6610b1db55bedaa9e96bf9ff49a19b1a91bd5370 (diff) | |
| download | external_llvm-9719cf329bc398191c65cd1c8cb1161d11c5e947.zip external_llvm-9719cf329bc398191c65cd1c8cb1161d11c5e947.tar.gz external_llvm-9719cf329bc398191c65cd1c8cb1161d11c5e947.tar.bz2 | |
Make sure HoistInsertPosition finds a position that is dominated by all
inputs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155809 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/LoopStrengthReduce')
| -rw-r--r-- | test/Transforms/LoopStrengthReduce/pr12691.ll | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/test/Transforms/LoopStrengthReduce/pr12691.ll b/test/Transforms/LoopStrengthReduce/pr12691.ll new file mode 100644 index 0000000..8399434 --- /dev/null +++ b/test/Transforms/LoopStrengthReduce/pr12691.ll @@ -0,0 +1,34 @@ +; RUN: opt < %s -loop-reduce -S | FileCheck %s + +@d = common global i32 0, align 4 + +define void @fn2(i32 %x) nounwind uwtable { +entry: + br label %for.cond + +for.cond: + %g.0 = phi i32 [ 0, %entry ], [ %dec, %for.cond ] + %tobool = icmp eq i32 %x, 0 + %dec = add nsw i32 %g.0, -1 + br i1 %tobool, label %for.cond, label %for.end + +for.end: +; CHECK: %tmp1 = load i32* @d, align 4 +; CHECK-NEXT: %tmp2 = load i32* @d, align 4 +; CHECK-NEXT: %0 = sub i32 %tmp1, %tmp2 + + %tmp1 = load i32* @d, align 4 + %add = add nsw i32 %tmp1, %g.0 + %tmp2 = load i32* @d, align 4 + %tobool26 = icmp eq i32 %x, 0 + br i1 %tobool26, label %for.end5, label %for.body.lr.ph + +for.body.lr.ph: + %tobool3 = icmp ne i32 %tmp2, %add + br label %for.end5 + +for.end5: + ret void +} + + |