[SystemZ] Rename subregs and add subreg_h32
Use subreg_hNN and subreg_lNN for the high and low NN bits of a register.
List the low registers first, so that subreg_l32 also means the low 32
bits of a 128-bit register.
Floats are stored in the upper 32 bits of a 64-bit register, so they
should use subreg_h32 rather than subreg_l32.
No behavioral change intended.
llvm-svn: 191659
diff --git a/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp b/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp
index ed75e28..acfb491 100644
--- a/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp
@@ -111,7 +111,7 @@
const SystemZTargetMachine &TM,
unsigned GPR64, bool IsImplicit) {
const SystemZRegisterInfo *RI = TM.getRegisterInfo();
- unsigned GPR32 = RI->getSubReg(GPR64, SystemZ::subreg_32bit);
+ unsigned GPR32 = RI->getSubReg(GPR64, SystemZ::subreg_l32);
bool IsLive = MBB.isLiveIn(GPR64) || MBB.isLiveIn(GPR32);
if (!IsLive || !IsImplicit) {
MIB.addReg(GPR64, getImplRegState(IsImplicit) | getKillRegState(!IsLive));