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| author | Andrew Trick <atrick@apple.com> | 2011-07-21 00:40:04 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-07-21 00:40:04 +0000 |
| commit | 8acb43440251bed00b43ea23b72178a8818a1581 (patch) | |
| tree | 1bd4023add78abb31f05c89d7a295d41ff93fb5d /llvm/test/Transforms/LoopStrengthReduce | |
| parent | 9ccf84e35dcf4abf5862eecc7b49f4be4b4cf2ee (diff) | |
| download | bcm5719-llvm-8acb43440251bed00b43ea23b72178a8818a1581.tar.gz bcm5719-llvm-8acb43440251bed00b43ea23b72178a8818a1581.zip | |
LSR crashes on an empty IVUsers list.
rdar://9786536
llvm-svn: 135644
Diffstat (limited to 'llvm/test/Transforms/LoopStrengthReduce')
| -rw-r--r-- | llvm/test/Transforms/LoopStrengthReduce/2011-07-20-DoubleIV.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopStrengthReduce/2011-07-20-DoubleIV.ll b/llvm/test/Transforms/LoopStrengthReduce/2011-07-20-DoubleIV.ll new file mode 100644 index 00000000000..3ceeeb658d1 --- /dev/null +++ b/llvm/test/Transforms/LoopStrengthReduce/2011-07-20-DoubleIV.ll @@ -0,0 +1,24 @@ +; RUN: opt < %s -loop-reduce -S | FileCheck %s +; +; Test LSR's OptimizeShadowIV. Handle a floating-point IV with a +; nonzero initial value. +; rdar://9786536 + +; First, make sure LSR doesn't crash on an empty IVUsers list. +; CHECK: @dummyIV +; CHECK-NOT: phi +; CHECK-NOT: sitofp +; CHECK: br +define void @dummyIV() nounwind { +entry: + br label %loop + +loop: + %i.01 = phi i32 [ -39, %entry ], [ %inc, %loop ] + %conv7 = sitofp i32 %i.01 to double + %inc = add nsw i32 %i.01, 1 + br i1 undef, label %loop, label %for.end + +for.end: + unreachable +} |
