From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Wed, 6 Oct 2010 23:56:46 +0000 (+0000)
Subject: Properly handle GR32_NOSP in X86RegisterInfo::getMatchingSuperRegClass.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8f42a19fb0793e1af465e9cf315524fa81396c76;p=oota-llvm.git

Properly handle GR32_NOSP in X86RegisterInfo::getMatchingSuperRegClass.

This function looks like it is about ready to be generated by TebleGen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115876 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 5d5dc6a9c7a..c043554b321 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -270,9 +270,14 @@ X86RegisterInfo::getMatchingSuperRegClass(const TargetRegisterClass *A,
     }
     break;
   case X86::sub_32bit:
-    if (B == &X86::GR32RegClass || B == &X86::GR32_NOSPRegClass) {
+    if (B == &X86::GR32RegClass) {
       if (A->getSize() == 8)
         return A;
+    } else if (B == &X86::GR32_NOSPRegClass) {
+      if (A == &X86::GR64RegClass || &X86::GR64_NOSPRegClass)
+        return &X86::GR64_NOSPRegClass;
+      if (A->getSize() == 8)
+        return getCommonSubClass(A, &X86::GR64_NOSPRegClass);
     } else if (B == &X86::GR32_ABCDRegClass) {
       if (A == &X86::GR64RegClass || A == &X86::GR64_ABCDRegClass ||
           A == &X86::GR64_NOREXRegClass ||