From 3b6b63711e2c3254c111141a26c2978b2b6fc95f Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Thu, 28 Apr 2005 21:48:42 +0000 Subject: [PATCH] Codegen fabs/fabsf as FABS. Patch contributed by Morten Ofstad git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21607 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86ISelSimple.cpp | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/lib/Target/X86/X86ISelSimple.cpp b/lib/Target/X86/X86ISelSimple.cpp index b783002420d..cd0c0d31475 100644 --- a/lib/Target/X86/X86ISelSimple.cpp +++ b/lib/Target/X86/X86ISelSimple.cpp @@ -1735,6 +1735,15 @@ void X86ISel::visitCallInst(CallInst &CI) { if (Intrinsic::ID ID = (Intrinsic::ID)F->getIntrinsicID()) { visitIntrinsicCall(ID, CI); // Special intrinsics are not handled here return; + } else if (F->getName() == "fabs" || F->getName() == "fabsf") { + if (CI.getNumOperands() == 2 && // Basic sanity checks. + CI.getOperand(1)->getType()->isFloatingPoint() && + CI.getType() == CI.getOperand(1)->getType()) { + unsigned op1Reg = getReg(CI.getOperand(1)); + unsigned DestReg = getReg(CI); + BuildMI(BB, X86::FABS, 1, DestReg).addReg(op1Reg); + return; + } } // Emit a CALL instruction with PC-relative displacement. -- 2.34.1