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Did proper badOps handling for both arg0 and arg1 being immediates

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This commit is contained in:
Brian Fiete 2021-12-30 06:56:00 -05:00
parent 60c19c4160
commit eb0cd3aefb
2 changed files with 17 additions and 4 deletions
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14
IDEHelper/Backend/BeMCContext.cpp
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@ -9060,7 +9060,15 @@ bool BeMCContext::DoLegalization()
if (isMov_R64_IMM64)
doStdCheck = false;
bool is3FormMul = false;
if ((isIntMul) && (inst->mResult))
bool badOps = false;
// Two immediates are never allowed. This can happen in cases like '(a % 1) * 2'
if ((arg0.IsImmediate()) && (arg1.IsImmediate()))
{
badOps = true;
doStdCheck = true;
}
else if ((isIntMul) && (inst->mResult))
{
is3FormMul = true;
if (inst->mArg1.IsImmediateInt())
@ -9083,15 +9091,13 @@ bool BeMCContext::DoLegalization()
}
}
// Int 3-form mul does not follow these rules
if (doStdCheck)
{
bool isIncOrDec = false;
isIncOrDec = (((inst->mKind == BeMCInstKind_Add) || (inst->mKind == BeMCInstKind_Sub)) &&
(arg1.IsImmediateInt()) && (arg1.mImmediate == 1));
bool badOps = false;
if ((!isIncOrDec) && (!isIntMul) && (!isIntDiv))
{
if ((arg0.MayBeMemory()) && (arg1.MayBeMemory()))