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target-alpha: Use mulu2 for umulh insn 

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2013-02-19 23:52:03 -08:00 committed by Blue Swirl
parent f1fae40c61
commit 962415fcd5
3 changed files with 18 additions and 10 deletions
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1
target-alpha/helper.h
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@ -9,7 +9,6 @@ DEF_HELPER_FLAGS_3(subqv, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(sublv, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(mullv, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(mulqv, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_2(umulh, TCG_CALL_NO_RWG_SE, i64, i64, i64)
DEF_HELPER_FLAGS_1(ctpop, TCG_CALL_NO_RWG_SE, i64, i64)
DEF_HELPER_FLAGS_1(ctlz, TCG_CALL_NO_RWG_SE, i64, i64)

7
target-alpha/int_helper.c
View File

@ -22,13 +22,6 @@
#include "qemu/host-utils.h"
uint64_t helper_umulh(uint64_t op1, uint64_t op2)
{
uint64_t tl, th;
mulu64(&tl, &th, op1, op2);
return th;
}
uint64_t helper_ctpop(uint64_t arg)
{
return ctpop64(arg);

20
target-alpha/translate.c
View File

@ -1390,7 +1390,6 @@ static inline void glue(gen_, name)(int ra, int rb, int rc, int islit,\
tcg_temp_free(tmp1); \
} \
}
ARITH3(umulh)
ARITH3(cmpbge)
ARITH3(minub8)
ARITH3(minsb8)
@ -2426,7 +2425,24 @@ static ExitStatus translate_one(DisasContext *ctx, uint32_t insn)
break;
case 0x30:
/* UMULH */
gen_umulh(ra, rb, rc, islit, lit);
{
TCGv low;
if (unlikely(rc == 31)){
break;
}
if (ra == 31) {
tcg_gen_movi_i64(cpu_ir[rc], 0);
break;
}
low = tcg_temp_new();
if (islit) {
tcg_gen_movi_tl(low, lit);
tcg_gen_mulu2_i64(low, cpu_ir[rc], cpu_ir[ra], low);
} else {
tcg_gen_mulu2_i64(low, cpu_ir[rc], cpu_ir[ra], cpu_ir[rb]);
}
tcg_temp_free(low);
}
break;
case 0x40:
/* MULL/V */