From f7cfac7a1422f723f9288d3a0bcff72798d450c3 Mon Sep 17 00:00:00 2001 From: Benjamin Kramer Date: Thu, 28 Feb 2013 19:09:33 +0000 Subject: Cost model support for lowered math builtins. We make the cost for calling libm functions extremely high as emitting the calls is expensive and causes spills (on x86) so performance suffers. We still vectorize important calls like ceilf and friends on SSE4.1. and fabs. Differential Revision: http://llvm-reviews.chandlerc.com/D466 llvm-svn: 176287 --- llvm/lib/Analysis/CostModel.cpp | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'llvm/lib/Analysis/CostModel.cpp') diff --git a/llvm/lib/Analysis/CostModel.cpp b/llvm/lib/Analysis/CostModel.cpp index 44684a9685b..df70d157b41 100644 --- a/llvm/lib/Analysis/CostModel.cpp +++ b/llvm/lib/Analysis/CostModel.cpp @@ -23,6 +23,7 @@ #include "llvm/Analysis/TargetTransformInfo.h" #include "llvm/IR/Function.h" #include "llvm/IR/Instructions.h" +#include "llvm/IR/IntrinsicInst.h" #include "llvm/IR/Value.h" #include "llvm/Pass.h" #include "llvm/Support/Debug.h" @@ -189,6 +190,16 @@ unsigned CostModelAnalysis::getInstructionCost(const Instruction *I) const { 0); return -1; } + case Instruction::Call: + if (const IntrinsicInst *II = dyn_cast(I)) { + SmallVector Tys; + for (unsigned J = 0, JE = II->getNumArgOperands(); J != JE; ++J) + Tys.push_back(II->getArgOperand(J)->getType()); + + return TTI->getIntrinsicInstrCost(II->getIntrinsicID(), II->getType(), + Tys); + } + return -1; default: // We don't have any information on this instruction. return -1; -- cgit v1.2.3