Check register class matching instead of width of type matching
when determining validity of matching constraint. Allow i1
types access to the GR8 reg class for x86.
Fixes PR10352 and rdar://9777108
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135180 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index ac5339c..fa9bf9a 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -12971,7 +12971,7 @@
return std::make_pair(0U, X86::GR32RegisterClass);
else if (VT == MVT::i16)
return std::make_pair(0U, X86::GR16RegisterClass);
- else if (VT == MVT::i8)
+ else if (VT == MVT::i8 || VT == MVT::i1)
return std::make_pair(0U, X86::GR8RegisterClass);
else if (VT == MVT::i64 || VT == MVT::f64)
return std::make_pair(0U, X86::GR64RegisterClass);
@@ -12983,14 +12983,14 @@
return std::make_pair(0U, X86::GR32_ABCDRegisterClass);
else if (VT == MVT::i16)
return std::make_pair(0U, X86::GR16_ABCDRegisterClass);
- else if (VT == MVT::i8)
+ else if (VT == MVT::i8 || VT == MVT::i1)
return std::make_pair(0U, X86::GR8_ABCD_LRegisterClass);
else if (VT == MVT::i64)
return std::make_pair(0U, X86::GR64_ABCDRegisterClass);
break;
case 'r': // GENERAL_REGS
case 'l': // INDEX_REGS
- if (VT == MVT::i8)
+ if (VT == MVT::i8 || VT == MVT::i1)
return std::make_pair(0U, X86::GR8RegisterClass);
if (VT == MVT::i16)
return std::make_pair(0U, X86::GR16RegisterClass);
@@ -12998,7 +12998,7 @@
return std::make_pair(0U, X86::GR32RegisterClass);
return std::make_pair(0U, X86::GR64RegisterClass);
case 'R': // LEGACY_REGS
- if (VT == MVT::i8)
+ if (VT == MVT::i8 || VT == MVT::i1)
return std::make_pair(0U, X86::GR8_NOREXRegisterClass);
if (VT == MVT::i16)
return std::make_pair(0U, X86::GR16_NOREXRegisterClass);