================
@@ -80,13 +80,47 @@ ARMBaseRegisterInfo::getCalleeSavedRegs(const
MachineFunction *MF) const {
? CSR_ATPCS_SplitPush_SwiftTail_SaveList
: CSR_AAPCS_SwiftTail_SaveList);
} else if (F.hasFnAttribute("interrupt")) {
+
+ // Don't bother saving the floating point registers if target is not hard
+ // float. This will prevent the Thumb1FrameLowering (cortex-m0) from
+ // crashing due to an llvm_unreachable being triggered when a D-class
+ // register is in the calling convention.
+ if (STI.isTargetHardFloat() && F.hasFnAttribute("save-fp")) {
----------------
efriedma-quic wrote:
It's a little weird to check isTargetHardFloat here... that just refers to
whether the calling convention passes arguments in integer registers or FP
registers. It doesn't have anything to do with whether floating-point
registers are used.
https://github.com/llvm/llvm-project/pull/89654
_______________________________________________
cfe-commits mailing list
cfe-commits@lists.llvm.org
https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
