Move the ARM SSAT and USAT optional shift amount operand out of the
instruction opcode. This also fixes part of PR7792.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110875 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp b/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
index d1d2852..f40da95 100644
--- a/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
+++ b/lib/Target/ARM/AsmPrinter/ARMInstPrinter.cpp
@@ -461,9 +461,9 @@
assert(0 && "FIXME: Implement printAddrModePCOperand");
}
-void ARMInstPrinter::printBitfieldInvMaskImmOperand (const MCInst *MI,
- unsigned OpNum,
- raw_ostream &O) {
+void ARMInstPrinter::printBitfieldInvMaskImmOperand(const MCInst *MI,
+ unsigned OpNum,
+ raw_ostream &O) {
const MCOperand &MO = MI->getOperand(OpNum);
uint32_t v = ~MO.getImm();
int32_t lsb = CountTrailingZeros_32(v);
@@ -472,6 +472,25 @@
O << '#' << lsb << ", #" << width;
}
+void ARMInstPrinter::printSatShiftOperand(const MCInst *MI, unsigned OpNum,
+ raw_ostream &O) {
+ unsigned ShiftOp = MI->getOperand(OpNum).getImm();
+ ARM_AM::ShiftOpc Opc = ARM_AM::getSORegShOp(ShiftOp);
+ switch (Opc) {
+ case ARM_AM::no_shift:
+ return;
+ case ARM_AM::lsl:
+ O << ", lsl #";
+ break;
+ case ARM_AM::asr:
+ O << ", asr #";
+ break;
+ default:
+ assert(0 && "unexpected shift opcode for saturate shift operand");
+ }
+ O << ARM_AM::getSORegOffset(ShiftOp);
+}
+
void ARMInstPrinter::printRegisterList(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
O << "{";
diff --git a/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h b/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h
index ddf5047..14d7ec9 100644
--- a/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h
+++ b/lib/Target/ARM/AsmPrinter/ARMInstPrinter.h
@@ -57,6 +57,7 @@
void printBitfieldInvMaskImmOperand(const MCInst *MI, unsigned OpNum,
raw_ostream &O);
+ void printSatShiftOperand(const MCInst *MI, unsigned OpNum, raw_ostream &O);
void printThumbS4ImmOperand(const MCInst *MI, unsigned OpNum, raw_ostream &O);
void printThumbITMask(const MCInst *MI, unsigned OpNum, raw_ostream &O);