[PowerPC] Don't return unsupported register classes for asm constraints
As a follow-up to r251566, do the same for the other optionally-supported
register classes (mostly for vector registers). Don't return an unavailable
register class (which would cause an assert later), but fail cleanly when
provided an unsupported inline asm constraint.
llvm-svn: 251575
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index ce6f3a6..8b55791 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -10923,18 +10923,19 @@
return std::make_pair(0U, &PPC::QFRCRegClass);
if (VT == MVT::v4f32 && Subtarget.hasQPX())
return std::make_pair(0U, &PPC::QSRCRegClass);
- return std::make_pair(0U, &PPC::VRRCRegClass);
+ if (Subtarget.hasAltivec())
+ return std::make_pair(0U, &PPC::VRRCRegClass);
case 'y': // crrc
return std::make_pair(0U, &PPC::CRRCRegClass);
}
} else if (Constraint == "wc" && Subtarget.useCRBits()) {
// An individual CR bit.
return std::make_pair(0U, &PPC::CRBITRCRegClass);
- } else if (Constraint == "wa" || Constraint == "wd" ||
- Constraint == "wf") {
+ } else if ((Constraint == "wa" || Constraint == "wd" ||
+ Constraint == "wf") && Subtarget.hasVSX()) {
return std::make_pair(0U, &PPC::VSRCRegClass);
- } else if (Constraint == "ws") {
- if (VT == MVT::f32)
+ } else if (Constraint == "ws" && Subtarget.hasVSX()) {
+ if (VT == MVT::f32 && Subtarget.hasP8Vector())
return std::make_pair(0U, &PPC::VSSRCRegClass);
else
return std::make_pair(0U, &PPC::VSFRCRegClass);