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Use lower16 / upper16 imm modifiers to asmprint 32-bit imms splitted via movt/movw pair.

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llvm-svn: 83572
This commit is contained in:
Anton Korobeynikov 2009-10-08 20:43:22 +00:00
parent dcfcba3a71
commit f9c811c948
2 changed files with 6 additions and 5 deletions
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7
lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
View File

@ -329,13 +329,14 @@ void ARMAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
} }
case MachineOperand::MO_Immediate: { case MachineOperand::MO_Immediate: {
int64_t Imm = MO.getImm(); int64_t Imm = MO.getImm();
O << '#';
if (Modifier) { if (Modifier) {
if (strcmp(Modifier, "lo16") == 0) if (strcmp(Modifier, "lo16") == 0)
Imm = Imm & 0xffffLL; O << ":lower16:";
else if (strcmp(Modifier, "hi16") == 0) else if (strcmp(Modifier, "hi16") == 0)
Imm = (Imm & 0xffff0000LL) >> 16; O << ":upper16:";
} }
O << '#' << Imm; O << Imm;
break; break;
} }
case MachineOperand::MO_MachineBasicBlock: case MachineOperand::MO_MachineBasicBlock:

4
test/CodeGen/ARM/t2-imm.ll
View File

@ -2,8 +2,8 @@
define i32 @f6(i32 %a) { define i32 @f6(i32 %a) {
; CHECK:f6 ; CHECK:f6
; CHECK: movw r0, #1123 ; CHECK: movw r0, #:lower16:65537123
; CHECK: movt r0, #1000 ; CHECK: movt r0, #:upper16:65537123
%tmp = add i32 0, 65537123 %tmp = add i32 0, 65537123
ret i32 %tmp ret i32 %tmp
} }