ARM ldm/stm register lists can be out of order.
It's not a good style idea, as the registers will be laid down in memory in
numerical order, not the order they're in the list, but it's legal. vldm/vstm
are stricter.
rdar://11064740
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152943 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 29a9b0d..8f3bd6d 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -2854,8 +2854,12 @@
if (!RC->contains(Reg))
return Error(RegLoc, "invalid register in register list");
// List must be monotonically increasing.
- if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg))
- return Error(RegLoc, "register list not in ascending order");
+ if (getARMRegisterNumbering(Reg) < getARMRegisterNumbering(OldReg)) {
+ if (ARMMCRegisterClasses[ARM::GPRRegClassID].contains(Reg))
+ Warning(RegLoc, "register list not in ascending order");
+ else
+ return Error(RegLoc, "register list not in ascending order");
+ }
if (getARMRegisterNumbering(Reg) == getARMRegisterNumbering(OldReg)) {
Warning(RegLoc, "duplicated register (" + RegTok.getString() +
") in register list");