Add support for 64-bit 'r' constraint. Patch by by Rafael ~Avila de EspÃndol!
This fixes PR1029 and Regression/CodeGen/X86/x86-64-asm.ll
llvm-svn: 32206
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 375777a..9358c8b 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -5528,6 +5528,11 @@
break;
case 'r': // GENERAL_REGS
case 'R': // LEGACY_REGS
+ if (VT == MVT::i64 && Subtarget->is64Bit())
+ return make_vector<unsigned>(X86::RAX, X86::RDX, X86::RCX, X86::RBX,
+ X86::RSI, X86::RDI, X86::RBP, X86::RSP,
+ X86::R8, X86::R9, X86::R10, X86::R11,
+ X86::R12, X86::R13, X86::R14, X86::R15, 0);
if (VT == MVT::i32)
return make_vector<unsigned>(X86::EAX, X86::EDX, X86::ECX, X86::EBX,
X86::ESI, X86::EDI, X86::EBP, X86::ESP, 0);