From a243db8c41bd8ace6e002c9e1fdcdc7256ebf677 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 11 Jan 2006 19:55:07 +0000
Subject: [PATCH] Fix calls that need to store values in stack slots, to not
 copy the stack pointer.  This allows us to emit stuff like this:

        li r10, 0
        stw r10, 56(r1)
        or r3, r10, r10
        or r4, r10, r10
        or r5, r10, r10
        or r6, r10, r10
        or r7, r10, r10
        or r8, r10, r10
        or r9, r10, r10
        bl L_bar$stub

instead of this:

        or r2, r1, r1     ;; Extraneous copy.
        li r10, 0
        stw r10, 56(r2)
        or r3, r10, r10
        or r4, r10, r10
        or r5, r10, r10
        or r6, r10, r10
        or r7, r10, r10
        or r8, r10, r10
        or r9, r10, r10
        bl L_bar$stub

wowness.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25221 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PowerPC/PPCISelLowering.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 976f80fafa9..9674432deef 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -657,8 +657,7 @@ PPCTargetLowering::LowerCallTo(SDOperand Chain,
     // Set up a copy of the stack pointer for use loading and storing any
     // arguments that may not fit in the registers available for argument
     // passing.
-    SDOperand StackPtr = DAG.getCopyFromReg(DAG.getEntryNode(),
-                                            PPC::R1, MVT::i32);
+    SDOperand StackPtr = DAG.getRegister(PPC::R1, MVT::i32);
     
     // Figure out which arguments are going to go in registers, and which in
     // memory.  Also, if this is a vararg function, floating point operations