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target-i386: Use CC_SRC2 for ADC and SBB

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Add another slot in ENV and store two of the three inputs.  This lets us
do less work when carry-out is not needed, and avoids the unpredictable
CC_OP after translating these insns.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2013-01-23 16:03:16 -08:00
parent db9f259772
commit 988c3eb0d6
5 changed files with 75 additions and 85 deletions
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40
target-i386/cc_helper.c
View file

@ -75,7 +75,8 @@ const uint8_t parity_table[256] = {
#endif
target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1, int op)
target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1,
target_ulong src2, int op)
{
switch (op) {
default: /* should never happen */
@ -99,11 +100,11 @@ target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1, int op)
return compute_all_addl(dst, src1);
case CC_OP_ADCB:
return compute_all_adcb(dst, src1);
return compute_all_adcb(dst, src1, src2);
case CC_OP_ADCW:
return compute_all_adcw(dst, src1);
return compute_all_adcw(dst, src1, src2);
case CC_OP_ADCL:
return compute_all_adcl(dst, src1);
return compute_all_adcl(dst, src1, src2);
case CC_OP_SUBB:
return compute_all_subb(dst, src1);
@ -113,11 +114,11 @@ target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1, int op)
return compute_all_subl(dst, src1);
case CC_OP_SBBB:
return compute_all_sbbb(dst, src1);
return compute_all_sbbb(dst, src1, src2);
case CC_OP_SBBW:
return compute_all_sbbw(dst, src1);
return compute_all_sbbw(dst, src1, src2);
case CC_OP_SBBL:
return compute_all_sbbl(dst, src1);
return compute_all_sbbl(dst, src1, src2);
case CC_OP_LOGICB:
return compute_all_logicb(dst, src1);
@ -160,11 +161,11 @@ target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1, int op)
case CC_OP_ADDQ:
return compute_all_addq(dst, src1);
case CC_OP_ADCQ:
return compute_all_adcq(dst, src1);
return compute_all_adcq(dst, src1, src2);
case CC_OP_SUBQ:
return compute_all_subq(dst, src1);
case CC_OP_SBBQ:
return compute_all_sbbq(dst, src1);
return compute_all_sbbq(dst, src1, src2);
case CC_OP_LOGICQ:
return compute_all_logicq(dst, src1);
case CC_OP_INCQ:
@ -181,10 +182,11 @@ target_ulong helper_cc_compute_all(target_ulong dst, target_ulong src1, int op)
uint32_t cpu_cc_compute_all(CPUX86State *env, int op)
{
return helper_cc_compute_all(CC_DST, CC_SRC, op);
return helper_cc_compute_all(CC_DST, CC_SRC, CC_SRC2, op);
}
target_ulong helper_cc_compute_c(target_ulong dst, target_ulong src1, int op)
target_ulong helper_cc_compute_c(target_ulong dst, target_ulong src1,
target_ulong src2, int op)
{
switch (op) {
default: /* should never happen */
@ -225,11 +227,11 @@ target_ulong helper_cc_compute_c(target_ulong dst, target_ulong src1, int op)
return compute_c_addl(dst, src1);
case CC_OP_ADCB:
return compute_c_adcb(dst, src1);
return compute_c_adcb(dst, src1, src2);
case CC_OP_ADCW:
return compute_c_adcw(dst, src1);
return compute_c_adcw(dst, src1, src2);
case CC_OP_ADCL:
return compute_c_adcl(dst, src1);
return compute_c_adcl(dst, src1, src2);
case CC_OP_SUBB:
return compute_c_subb(dst, src1);
@ -239,11 +241,11 @@ target_ulong helper_cc_compute_c(target_ulong dst, target_ulong src1, int op)
return compute_c_subl(dst, src1);
case CC_OP_SBBB:
return compute_c_sbbb(dst, src1);
return compute_c_sbbb(dst, src1, src2);
case CC_OP_SBBW:
return compute_c_sbbw(dst, src1);
return compute_c_sbbw(dst, src1, src2);
case CC_OP_SBBL:
return compute_c_sbbl(dst, src1);
return compute_c_sbbl(dst, src1, src2);
case CC_OP_SHLB:
return compute_c_shlb(dst, src1);
@ -256,11 +258,11 @@ target_ulong helper_cc_compute_c(target_ulong dst, target_ulong src1, int op)
case CC_OP_ADDQ:
return compute_c_addq(dst, src1);
case CC_OP_ADCQ:
return compute_c_adcq(dst, src1);
return compute_c_adcq(dst, src1, src2);
case CC_OP_SUBQ:
return compute_c_subq(dst, src1);
case CC_OP_SBBQ:
return compute_c_sbbq(dst, src1);
return compute_c_sbbq(dst, src1, src2);
case CC_OP_SHLQ:
return compute_c_shlq(dst, src1);
#endif