From: Chris Lattner <sabre@nondot.org>
Date: Sun, 25 Feb 2007 09:31:16 +0000 (+0000)
Subject: fastcc functions that return double values now return them in xmm0 on x86-32.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5e265b29ea1420db59b943bf95a1cb14fa9ca8c5;p=oota-llvm.git

fastcc functions that return double values now return them in xmm0 on x86-32.
This implements CodeGen/X86/fp-stack-ret.ll:test[23]


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34592 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index af8abf15fca..ffd24ee80b0 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -434,7 +434,7 @@ X86TargetLowering::X86TargetLowering(TargetMachine &TM)
 static void GetRetValueLocs(const MVT::ValueType *VTs, unsigned NumVTs,
                             unsigned *ResultRegs,
                             const X86Subtarget *Subtarget,
-                            unsigned CallingConv) {
+                            unsigned CC) {
   if (NumVTs == 0) return;
   
   if (NumVTs == 2) {
@@ -456,6 +456,8 @@ static void GetRetValueLocs(const MVT::ValueType *VTs, unsigned NumVTs,
   case MVT::f64:
     if (Subtarget->is64Bit())
       Reg = X86::XMM0;         // FP values in X86-64 go in XMM0.
+    else if (CC == CallingConv::Fast)
+      Reg = X86::XMM0;         // FP values in X86-32 with fastcc go in XMM0.
     else
       Reg = X86::ST0;          // FP values in X86-32 go in ST0.
     break;