// ADD <Rd>, sp, #<imm8>
// This is rematerializable, which is particularly useful for taking the
// address of locals.
-let isReMaterializable = 1 in
+let isReMaterializable = 1, neverHasSideEffects = 1 in
def tADDrSPi : T1pI<(outs tGPR:$dst), (ins GPRsp:$sp, t_imm0_1020s4:$imm),
IIC_iALUi, "add", "\t$dst, $sp, $imm", []>,
T1Encoding<{1,0,1,0,1,?}> {
//===----------------------------------------------------------------------===//
let canFoldAsLoad = 1, isReMaterializable = 1 in {
- def LBU : LoadM<0x30, 0x000, "lbu ">;
- def LBUR : LoadM<0x30, 0x200, "lbur ">;
+ let neverHasSideEffects = 1 in {
+ def LBU : LoadM<0x30, 0x000, "lbu ">;
+ def LBUR : LoadM<0x30, 0x200, "lbur ">;
- def LHU : LoadM<0x31, 0x000, "lhu ">;
- def LHUR : LoadM<0x31, 0x200, "lhur ">;
+ def LHU : LoadM<0x31, 0x000, "lhu ">;
+ def LHUR : LoadM<0x31, 0x200, "lhur ">;
- def LW : LoadM<0x32, 0x000, "lw ">;
- def LWR : LoadM<0x32, 0x200, "lwr ">;
+ def LW : LoadM<0x32, 0x000, "lw ">;
+ def LWR : LoadM<0x32, 0x200, "lwr ">;
- let Defs = [CARRY] in {
- def LWX : LoadM<0x32, 0x400, "lwx ">;
+ let Defs = [CARRY] in {
+ def LWX : LoadM<0x32, 0x400, "lwx ">;
+ }
}
def LBUI : LoadMI<0x38, "lbui ", zextloadi8>;
"lmg\t{$from, $to, $dst}",
[]>;
-let isReMaterializable = 1, isAsCheapAsAMove = 1,
+let isReMaterializable = 1, neverHasSideEffects = 1, isAsCheapAsAMove = 1,
Constraints = "$src = $dst" in {
def MOV64Pr0_even : Pseudo<(outs GR64P:$dst), (ins GR64P:$src),
"lhi\t${dst:subreg_even}, 0",
def MOV8mr_NOREX : I<0x88, MRMDestMem,
(outs), (ins i8mem_NOREX:$dst, GR8_NOREX:$src),
"mov{b}\t{$src, $dst|$dst, $src} # NOREX", []>;
-let mayLoad = 1,
+let mayLoad = 1, neverHasSideEffects = 1,
canFoldAsLoad = 1, isReMaterializable = 1 in
def MOV8rm_NOREX : I<0x8A, MRMSrcMem,
(outs GR8_NOREX:$dst), (ins i8mem_NOREX:$src),
InstInfo.isBitcast = IsBitcast;
InstInfo.hasSideEffects = HasSideEffects;
InstInfo.Operands.isVariadic = IsVariadic;
+
+ // Sanity checks.
+ if (InstInfo.isReMaterializable && InstInfo.hasSideEffects)
+ throw TGError(InstInfo.TheDef->getLoc(), "The instruction " +
+ InstInfo.TheDef->getName() +
+ " is rematerializable AND has unmodeled side effects?");
}
}