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more common subexpression bugs (#21056)

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Walter Bright 2025-03-22 01:26:00 -07:00 • committed by GitHub
parent dce0ebac9b
commit 14874cffd8
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1 changed files with 16 additions and 2 deletions
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18
compiler/src/dmd/backend/x86/cgcod.d
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@ -1621,7 +1621,10 @@ static if (0)
} }
tym = tybasic(tym); tym = tybasic(tym);
uint size = _tysize[tym]; uint size = _tysize[tym];
outretregs &= mES | cgstate.allregs | XMMREGS | INSTR.FLOATREGS; if (cgstate.AArch64)
outretregs &= cgstate.allregs | INSTR.FLOATREGS;
else
outretregs &= mES | cgstate.allregs | XMMREGS | INSTR.FLOATREGS;
regm_t retregs = outretregs; regm_t retregs = outretregs;
regm_t[] lastRetregs = cgstate.lastRetregs[]; regm_t[] lastRetregs = cgstate.lastRetregs[];
@ -2237,7 +2240,14 @@ private void comsub(ref CodeBuilder cdb,elem* e, ref regm_t pretregs)
else else
{ {
retregs = pretregs; retregs = pretregs;
if (!AArch64 && byte_ && !(retregs & BYTEREGS)) if (AArch64)
{
if (!(retregs & (cgstate.allregs | INSTR.FLOATREGS)))
{
retregs = tyfloating(tym) ? INSTR.FLOATREGS : cgstate.allregs;
}
}
else if (byte_ && !(retregs & BYTEREGS))
retregs = BYTEREGS; retregs = BYTEREGS;
reg = allocreg(cdb,retregs,tym); reg = allocreg(cdb,retregs,tym);
gen_loadcse(cdb, cse.e.Ety, reg, cse.slot); gen_loadcse(cdb, cse.e.Ety, reg, cse.slot);
@ -3015,6 +3025,10 @@ const(char)* regm_str(regm_t rm)
strcat(p, "sp"); strcat(p, "sp");
else if (j == 29) else if (j == 29)
strcat(p, "fp"); strcat(p, "fp");
else if (j == NOREG)
strcat(p, "NOREG");
else if (j == PSW)
strcat(p, "PSW");
else else
{ {
char[4] buf = void; char[4] buf = void;