|
| From: | Aleksandar Markovic |
| Subject: | [PATCH 4/4] target/mips: Refactor helpers for fp comparison instructions |
| Date: | Tue, 8 Sep 2020 14:44:28 +0200 |
This change causes slighlty better performance of emulation of fp
comparison instructions via better compiler optimization of refactored
code. The functionality is otherwise unchanged.
Signed-off-by: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
---
target/mips/fpu_helper.c | 56 +++++++++++++++++++++++-----------------
1 file changed, 32 insertions(+), 24 deletions(-)
diff --git a/target/mips/fpu_helper.c b/target/mips/fpu_helper.c
index f480c7296e..22d533322b 100644
--- a/target/mips/fpu_helper.c
+++ b/target/mips/fpu_helper.c
@@ -1780,11 +1780,12 @@ void helper_cmp_d_ ## op(CPUMIPSState *env, uint64_t
fdt0, \
{ \
int c; \
c = cond; \
- update_fcr31(env, GETPC()); \
- if (c) \
+ if (c) { \
SET_FP_COND(cc, env->active_fpu); \
- else \
+ } else { \
CLEAR_FP_COND(cc, env->active_fpu); \
+ } \
+ update_fcr31(env, GETPC()); \
} \
void helper_cmpabs_d_ ## op(CPUMIPSState *env, uint64_t fdt0, \
uint64_t fdt1, int cc) \
@@ -1793,11 +1794,12 @@ void helper_cmpabs_d_ ## op(CPUMIPSState *env, uint64_t
fdt0, \
fdt0 = float64_abs(fdt0); \
fdt1 = float64_abs(fdt1); \
c = cond; \
- update_fcr31(env, GETPC()); \
- if (c) \
+ if (c) { \
SET_FP_COND(cc, env->active_fpu); \
- else \
+ } else { \
CLEAR_FP_COND(cc, env->active_fpu); \
+ } \
+ update_fcr31(env, GETPC()); \
}
/*
@@ -1859,11 +1861,12 @@ void helper_cmp_s_ ## op(CPUMIPSState *env, uint32_t
fst0, \
{ \
int c; \
c = cond; \
- update_fcr31(env, GETPC()); \
- if (c) \
+ if (c) { \
SET_FP_COND(cc, env->active_fpu); \
- else \
+ } else { \
CLEAR_FP_COND(cc, env->active_fpu); \
+ } \
+ update_fcr31(env, GETPC()); \
} \
void helper_cmpabs_s_ ## op(CPUMIPSState *env, uint32_t fst0, \
uint32_t fst1, int cc) \
@@ -1872,11 +1875,12 @@ void helper_cmpabs_s_ ## op(CPUMIPSState *env, uint32_t
fst0, \
fst0 = float32_abs(fst0); \
fst1 = float32_abs(fst1); \
c = cond; \
- update_fcr31(env, GETPC()); \
- if (c) \
+ if (c) { \
SET_FP_COND(cc, env->active_fpu); \
- else \
+ } else { \
CLEAR_FP_COND(cc, env->active_fpu); \
+ } \
+ update_fcr31(env, GETPC()); \
}
/*
@@ -1944,15 +1948,17 @@ void helper_cmp_ps_ ## op(CPUMIPSState *env, uint64_t
fdt0, \
fsth1 = fdt1 >> 32; \
cl = condl; \
ch = condh; \
- update_fcr31(env, GETPC()); \
- if (cl) \
+ if (cl) { \
SET_FP_COND(cc, env->active_fpu); \
- else \
+ } else { \
CLEAR_FP_COND(cc, env->active_fpu); \
- if (ch) \
+ } \
+ if (ch) { \
SET_FP_COND(cc + 1, env->active_fpu); \
- else \
+ } else { \
CLEAR_FP_COND(cc + 1, env->active_fpu); \
+ } \
+ update_fcr31(env, GETPC()); \
} \
void helper_cmpabs_ps_ ## op(CPUMIPSState *env, uint64_t fdt0, \
uint64_t fdt1, int cc) \
@@ -1965,15 +1971,17 @@ void helper_cmpabs_ps_ ## op(CPUMIPSState *env,
uint64_t fdt0, \
fsth1 = float32_abs(fdt1 >> 32); \
cl = condl; \
ch = condh; \
- update_fcr31(env, GETPC()); \
- if (cl) \
+ if (cl) { \
SET_FP_COND(cc, env->active_fpu); \
- else \
+ } else { \
CLEAR_FP_COND(cc, env->active_fpu); \
- if (ch) \
+ } \
+ if (ch) { \
SET_FP_COND(cc + 1, env->active_fpu); \
- else \
+ } else { \
CLEAR_FP_COND(cc + 1, env->active_fpu); \
+ } \
+ update_fcr31(env, GETPC()); \
}
/*
@@ -2080,12 +2088,12 @@ uint64_t helper_r6_cmp_d_ ## op(CPUMIPSState *env,
uint64_t fdt0, \
{ \
uint64_t c; \
c = cond; \
- update_fcr31(env, GETPC()); \
if (c) { \
return -1; \
} else { \
return 0; \
} \
+ update_fcr31(env, GETPC()); \
}
/*
@@ -2175,12 +2183,12 @@ uint32_t helper_r6_cmp_s_ ## op(CPUMIPSState *env,
uint32_t fst0, \
{ \
uint64_t c; \
c = cond; \
- update_fcr31(env, GETPC()); \
if (c) { \
return -1; \
} else { \
return 0; \
} \
+ update_fcr31(env, GETPC()); \
}
/*
--
2.20.1
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