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tcg/optimize: Don't special case TCG_OPF_CALL_CLOBBER 

With the "old" ldst ops we didn't know the real width of the
result of the load, but with the "new" ldst ops we do.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2014-06-08 18:24:14 -07:00
parent d279279e2b
commit bc8d688ff3
1 changed files with 4 additions and 5 deletions
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9
tcg/optimize.c
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@ -911,12 +911,11 @@ static TCGArg *tcg_constant_folding(TCGContext *s, uint16_t *tcg_opc_ptr,
break;
}
/* 32-bit ops (non 64-bit ops and non load/store ops) generate
32-bit results. For the result is zero test below, we can
ignore high bits, but for further optimizations we need to
record that the high bits contain garbage. */
/* 32-bit ops generate 32-bit results. For the result is zero test
below, we can ignore high bits, but for further optimizations we
need to record that the high bits contain garbage. */
partmask = mask;
if (!(def->flags & (TCG_OPF_CALL_CLOBBER | TCG_OPF_64BIT))) {
if (!(def->flags & TCG_OPF_64BIT)) {
mask |= ~(tcg_target_ulong)0xffffffffu;
partmask &= 0xffffffffu;
affected &= 0xffffffffu;