This reverts commit r203762, "ARM: support emission of complex SO expressions".
The commit r203762 introduced silent failure for complext SO expression, and it's even worse than compiler crash.
llvm-svn: 204427
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp
index a12b8d4..3b2ca73 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCCodeEmitter.cpp
@@ -271,20 +271,8 @@
unsigned getSOImmOpValue(const MCInst &MI, unsigned Op,
SmallVectorImpl<MCFixup> &Fixups,
const MCSubtargetInfo &STI) const {
- int SoImmVal = -1;
-
- const MCOperand &MO = MI.getOperand(Op);
- if (MO.isImm()) {
- SoImmVal = ARM_AM::getSOImmVal(MO.getImm());
- } else if (MO.isExpr()) {
- int64_t Value;
- bool Invalid = MO.getExpr()->EvaluateAsAbsolute(Value);
- (void) Invalid;
- assert(!Invalid && "non-constant expression is not a valid SOImm operand");
- assert((Value >= INT32_MIN && Value <= INT32_MAX) &&
- "expression must be representable in 32 bits");
- SoImmVal = Value;
- }
+ unsigned SoImm = MI.getOperand(Op).getImm();
+ int SoImmVal = ARM_AM::getSOImmVal(SoImm);
assert(SoImmVal != -1 && "Not a valid so_imm value!");
// Encode rotate_imm.