Add support for the x86-64 'q' regigster modifier, and add support for the
b/h/w/k/q inline asm memory modifiers, which are just ignored. This fixes
PR1748 and CodeGen/X86/2007-10-28-inlineasm-q-modifier.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43430 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ATTAsmPrinter.cpp b/lib/Target/X86/X86ATTAsmPrinter.cpp
index 0655877..cc4252f 100644
--- a/lib/Target/X86/X86ATTAsmPrinter.cpp
+++ b/lib/Target/X86/X86ATTAsmPrinter.cpp
@@ -521,6 +521,9 @@
case 'k': // Print SImode register
Reg = getX86SubSuperRegister(Reg, MVT::i32);
break;
+ case 'q': // Print DImode register
+ Reg = getX86SubSuperRegister(Reg, MVT::i64);
+ break;
}
O << '%';
@@ -547,6 +550,7 @@
case 'h': // Print QImode high register
case 'w': // Print HImode register
case 'k': // Print SImode register
+ case 'q': // Print DImode register
if (MI->getOperand(OpNo).isRegister())
return printAsmMRegister(MI->getOperand(OpNo), ExtraCode[0]);
printOperand(MI, OpNo);
@@ -566,8 +570,20 @@
unsigned OpNo,
unsigned AsmVariant,
const char *ExtraCode) {
- if (ExtraCode && ExtraCode[0])
- return true; // Unknown modifier.
+ if (ExtraCode && ExtraCode[0]) {
+ if (ExtraCode[1] != 0) return true; // Unknown modifier.
+
+ switch (ExtraCode[0]) {
+ default: return true; // Unknown modifier.
+ case 'b': // Print QImode register
+ case 'h': // Print QImode high register
+ case 'w': // Print HImode register
+ case 'k': // Print SImode register
+ case 'q': // Print SImode register
+ // These only apply to registers, ignore on mem.
+ break;
+ }
+ }
printMemReference(MI, OpNo);
return false;
}