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Merge remote-tracking branch 'remotes/rth/tcg-next' into staging

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* remotes/rth/tcg-next:
  tcg/optimize: Don't special case TCG_OPF_CALL_CLOBBER

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-06-20 15:44:31 +01:00
commit a096922bef
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;