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| author | Evan Cheng <evan.cheng@apple.com> | 2011-07-13 19:08:16 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2011-07-13 19:08:16 +0000 |
| commit | 93a635c82c33e331bd4c5f4f44ba1e37a08bd687 (patch) | |
| tree | 9da1ef6184cdaf04d2978ea718dd639628ae59eb /lib/Transforms/InstCombine | |
| parent | 59642c260064a0c9140e048d702a21830020487f (diff) | |
| download | llvm-93a635c82c33e331bd4c5f4f44ba1e37a08bd687.tar.gz llvm-93a635c82c33e331bd4c5f4f44ba1e37a08bd687.tar.bz2 llvm-93a635c82c33e331bd4c5f4f44ba1e37a08bd687.tar.xz | |
It's not safe to fold (fptrunc (sqrt (fpext x))) to (sqrtf x) if there is another use of sqrt. rdar://9763193
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135058 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/InstCombine')
| -rw-r--r-- | lib/Transforms/InstCombine/InstCombineCasts.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/Transforms/InstCombine/InstCombineCasts.cpp b/lib/Transforms/InstCombine/InstCombineCasts.cpp index 036f0d3367..82c734e0b8 100644 --- a/lib/Transforms/InstCombine/InstCombineCasts.cpp +++ b/lib/Transforms/InstCombine/InstCombineCasts.cpp @@ -1216,7 +1216,8 @@ Instruction *InstCombiner::visitFPTrunc(FPTruncInst &CI) { CallInst *Call = dyn_cast<CallInst>(CI.getOperand(0)); if (Call && Call->getCalledFunction() && Call->getCalledFunction()->getName() == "sqrt" && - Call->getNumArgOperands() == 1) { + Call->getNumArgOperands() == 1 && + Call->hasOneUse()) { CastInst *Arg = dyn_cast<CastInst>(Call->getArgOperand(0)); if (Arg && Arg->getOpcode() == Instruction::FPExt && CI.getType()->isFloatTy() && |