From cd0274ca189040a2fd883b00a678184afc2cda3a Mon Sep 17 00:00:00 2001 From: Benjamin Kramer Date: Thu, 31 Mar 2011 10:11:58 +0000 Subject: InstCombine: fold fcmp (fpext x), (fpext y) -> fcmp x, y. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128624 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Transforms/InstCombine/InstCombineCompares.cpp | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'lib/Transforms') diff --git a/lib/Transforms/InstCombine/InstCombineCompares.cpp b/lib/Transforms/InstCombine/InstCombineCompares.cpp index 8787e2ae0e..698b715fd8 100644 --- a/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -2813,5 +2813,12 @@ Instruction *InstCombiner::visitFCmpInst(FCmpInst &I) { } } + // fcmp (fpext x), (fpext y) -> fcmp x, y + if (FPExtInst *LHSExt = dyn_cast(Op0)) + if (FPExtInst *RHSExt = dyn_cast(Op1)) + if (LHSExt->getSrcTy() == RHSExt->getSrcTy()) + return new FCmpInst(I.getPredicate(), LHSExt->getOperand(0), + RHSExt->getOperand(0)); + return Changed ? &I : 0; } -- cgit v1.2.3-70-g09d2