Make ARM and Thumb2 32-bit immediate materialization into a single 32-bit pseudo
instruction. This makes it re-materializable.
Thumb2 will split it back out into two instructions so IT pass will generate the
right mask. Also, this expose opportunies to optimize the movw to a 16-bit move.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82982 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
index fa6720f..df349e3 100644
--- a/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
@@ -329,7 +329,14 @@
break;
}
case MachineOperand::MO_Immediate: {
- O << '#' << MO.getImm();
+ int64_t Imm = MO.getImm();
+ if (Modifier) {
+ if (strcmp(Modifier, "lo16") == 0)
+ Imm = Imm & 0xffffLL;
+ else if (strcmp(Modifier, "hi16") == 0)
+ Imm = (Imm & 0xffff0000LL) >> 16;
+ }
+ O << '#' << Imm;
break;
}
case MachineOperand::MO_MachineBasicBlock: