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path: root/lib/Target/X86/X86AsmPrinter.cpp
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Diffstat (limited to 'lib/Target/X86/X86AsmPrinter.cpp')
-rw-r--r--lib/Target/X86/X86AsmPrinter.cpp8
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/Target/X86/X86AsmPrinter.cpp b/lib/Target/X86/X86AsmPrinter.cpp
index 1258441150..1f5f91844f 100644
--- a/lib/Target/X86/X86AsmPrinter.cpp
+++ b/lib/Target/X86/X86AsmPrinter.cpp
@@ -393,9 +393,11 @@ bool X86AsmPrinter::printAsmMRegister(const MachineOperand &MO, char Mode,
case 'k': // Print SImode register
Reg = getX86SubSuperRegister(Reg, MVT::i32);
break;
- case 'q': // Print DImode register
- // FIXME: gcc will actually print e instead of r for 32-bit.
- Reg = getX86SubSuperRegister(Reg, MVT::i64);
+ case 'q':
+ // Print 64-bit register names if 64-bit integer registers are available.
+ // Otherwise, print 32-bit register names.
+ MVT::SimpleValueType Ty = Subtarget->is64Bit() ? MVT::i64 : MVT::i32;
+ Reg = getX86SubSuperRegister(Reg, Ty);
break;
}