[mips] Correct tail call encoding for MIPSR6
r277708 enabled tails calls for MIPS but used the 'jr' instruction when the
jump target was held in a register. For MIPSR6, 'jalr $zero, $reg' should
have been used. Additionally, add missing patterns for external and global
symbols for tail calls.
Reviewers: dsanders, vkalintiris
Differential Review: https://reviews.llvm.org/D23301
llvm-svn: 279064
diff --git a/llvm/lib/Target/Mips/MipsInstrInfo.cpp b/llvm/lib/Target/Mips/MipsInstrInfo.cpp
index aedb8a4..35ddbf2 100644
--- a/llvm/lib/Target/Mips/MipsInstrInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsInstrInfo.cpp
@@ -282,7 +282,7 @@
case Mips::JR:
case Mips::PseudoReturn:
case Mips::PseudoIndirectBranch:
- case Mips::TAILCALLREG_MM:
+ case Mips::TAILCALLREG:
canUseShortMicroMipsCTI = true;
break;
}
@@ -363,8 +363,7 @@
case Mips::JR:
case Mips::PseudoReturn:
case Mips::PseudoIndirectBranch:
- case Mips::TAILCALLREG_MM:
- case Mips::TAILCALLREG_R6:
+ case Mips::TAILCALLREG:
if (canUseShortMicroMipsCTI)
return Mips::JRC16_MM;
return Mips::JIC;
@@ -373,7 +372,7 @@
case Mips::JR64:
case Mips::PseudoReturn64:
case Mips::PseudoIndirectBranch64:
- case Mips::TAILCALLREG64_R6:
+ case Mips::TAILCALLREG64:
return Mips::JIC64;
case Mips::JALR64Pseudo:
return Mips::JIALC64;