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target-mips: Use the new extract op 

Use extract for EXT and DEXT.

Reviewed-by: Yongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2016-10-15 12:04:13 -05:00
parent 04fc2f1c8f
commit 6eebb7a438
1 changed files with 5 additions and 7 deletions
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12
target/mips/translate.c
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@ -4488,11 +4488,12 @@ static void gen_bitops (DisasContext *ctx, uint32_t opc, int rt,
if (lsb + msb > 31) { if (lsb + msb > 31) {
goto fail; goto fail;
} }
tcg_gen_shri_tl(t0, t1, lsb);
if (msb != 31) { if (msb != 31) {
tcg_gen_andi_tl(t0, t0, (1U << (msb + 1)) - 1); tcg_gen_extract_tl(t0, t1, lsb, msb + 1);
} else { } else {
tcg_gen_ext32s_tl(t0, t0); /* The two checks together imply that lsb == 0,
so this is a simple sign-extension. */
tcg_gen_ext32s_tl(t0, t1);
} }
break; break;
#if defined(TARGET_MIPS64) #if defined(TARGET_MIPS64)
@ -4507,10 +4508,7 @@ static void gen_bitops (DisasContext *ctx, uint32_t opc, int rt,
if (lsb + msb > 63) { if (lsb + msb > 63) {
goto fail; goto fail;
} }
tcg_gen_shri_tl(t0, t1, lsb); tcg_gen_extract_tl(t0, t1, lsb, msb + 1);
if (msb != 63) {
tcg_gen_andi_tl(t0, t0, (1ULL << (msb + 1)) - 1);
}
break; break;
#endif #endif
case OPC_INS: case OPC_INS: