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[Qemu-devel] [PATCH 15/38] target-alpha: Use mulu2 for umulh insn
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH 15/38] target-alpha: Use mulu2 for umulh insn |
Date: |
Tue, 19 Feb 2013 23:52:03 -0800 |
Signed-off-by: Richard Henderson <address@hidden>
---
target-alpha/helper.h | 1 -
target-alpha/int_helper.c | 7 -------
target-alpha/translate.c | 20 ++++++++++++++++++--
3 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/target-alpha/helper.h b/target-alpha/helper.h
index eac3041..3321fde 100644
--- a/target-alpha/helper.h
+++ b/target-alpha/helper.h
@@ -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)
diff --git a/target-alpha/int_helper.c b/target-alpha/int_helper.c
index c9b42b6..51ccd41 100644
--- a/target-alpha/int_helper.c
+++ b/target-alpha/int_helper.c
@@ -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);
diff --git a/target-alpha/translate.c b/target-alpha/translate.c
index f687b95..f8f7695 100644
--- a/target-alpha/translate.c
+++ b/target-alpha/translate.c
@@ -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 */
--
1.8.1.2
- [Qemu-devel] [PATCH 12/38] target-i386: Use add2 to implement the ADX extension, (continued)
- [Qemu-devel] [PATCH 12/38] target-i386: Use add2 to implement the ADX extension, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 10/38] tcg-arm: Implement muls2_i32, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 09/38] tcg-i386: Implement multiword arithmetic ops, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 14/38] tcg: Apply life analysis to 64-bit multiword arithmetic ops, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 16/38] target-s390x: Use mulu2 for mlgr insn, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 11/38] target-i386: Use mulu2 and muls2, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 13/38] tcg: Implement muls2 with mulu2, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 18/38] target-arm: Use mul[us]2 and add2 in umlal et al, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 15/38] target-alpha: Use mulu2 for umulh insn,
Richard Henderson <=
- [Qemu-devel] [PATCH 28/38] target-ppc: Compute addition carry with setcond, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 32/38] target-ppc: Compute mullwo without branches, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 34/38] target-sparc: Use mul*2 for multiply, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 33/38] target-sparc: Use official add2/sub2 interfaces for addx/subx, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 30/38] target-ppc: Implement neg in terms of subf, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 36/38] target-unicore32: Use mul*2 for do_mult, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 24/38] target-ppc: Use mul*2 in mulh* insns, Richard Henderson, 2013/02/20
- [Qemu-devel] [PATCH 20/38] target-arm: Implement adc_cc inline, Richard Henderson, 2013/02/20