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[Qemu-devel] [PATCH v2 1/3] target-ppc: simplify NaN propagation for vec
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PATCH v2 1/3] target-ppc: simplify NaN propagation for vector functions |
Date: |
Wed, 20 Apr 2011 13:32:32 +0200 |
Commit e024e881bb1a8b5085026589360d26ed97acdd64 provided a pickNaN()
function for PowerPC, implementing the correct NaN propagation rules.
Therefore there is no need to test the operands manually, we can rely
on the softfloat code to do that.
Cc: Alexander Graf <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>
---
target-ppc/op_helper.c | 26 +++++++-------------------
1 files changed, 7 insertions(+), 19 deletions(-)
Note: Unfortunately the current propagation rules implemented in
softfloat only concerns 2 operands operations, so we have to keep
HANDLE_NAN3 for now.
diff --git a/target-ppc/op_helper.c b/target-ppc/op_helper.c
index d5db484..f2c80a3 100644
--- a/target-ppc/op_helper.c
+++ b/target-ppc/op_helper.c
@@ -2087,9 +2087,7 @@ VARITH(uwm, u32)
{ \
int i; \
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
- HANDLE_NAN2(r->f[i], a->f[i], b->f[i]) { \
- r->f[i] = func(a->f[i], b->f[i], &env->vec_status); \
- } \
+ r->f[i] = func(a->f[i], b->f[i], &env->vec_status); \
} \
}
VARITHFP(addfp, float32_add)
@@ -2650,9 +2648,7 @@ void helper_vrefp (ppc_avr_t *r, ppc_avr_t *b)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN1(r->f[i], b->f[i]) {
- r->f[i] = float32_div(float32_one, b->f[i], &env->vec_status);
- }
+ r->f[i] = float32_div(float32_one, b->f[i], &env->vec_status);
}
}
@@ -2663,9 +2659,7 @@ void helper_vrefp (ppc_avr_t *r, ppc_avr_t *b)
float_status s = env->vec_status; \
set_float_rounding_mode(rounding, &s); \
for (i = 0; i < ARRAY_SIZE(r->f); i++) { \
- HANDLE_NAN1(r->f[i], b->f[i]) { \
- r->f[i] = float32_round_to_int (b->f[i], &s); \
- } \
+ r->f[i] = float32_round_to_int (b->f[i], &s); \
} \
}
VRFI(n, float_round_nearest_even)
@@ -2693,10 +2687,8 @@ void helper_vrsqrtefp (ppc_avr_t *r, ppc_avr_t *b)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN1(r->f[i], b->f[i]) {
- float32 t = float32_sqrt(b->f[i], &env->vec_status);
- r->f[i] = float32_div(float32_one, t, &env->vec_status);
- }
+ float32 t = float32_sqrt(b->f[i], &env->vec_status);
+ r->f[i] = float32_div(float32_one, t, &env->vec_status);
}
}
@@ -2710,9 +2702,7 @@ void helper_vexptefp (ppc_avr_t *r, ppc_avr_t *b)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN1(r->f[i], b->f[i]) {
- r->f[i] = float32_exp2(b->f[i], &env->vec_status);
- }
+ r->f[i] = float32_exp2(b->f[i], &env->vec_status);
}
}
@@ -2720,9 +2710,7 @@ void helper_vlogefp (ppc_avr_t *r, ppc_avr_t *b)
{
int i;
for (i = 0; i < ARRAY_SIZE(r->f); i++) {
- HANDLE_NAN1(r->f[i], b->f[i]) {
- r->f[i] = float32_log2(b->f[i], &env->vec_status);
- }
+ r->f[i] = float32_log2(b->f[i], &env->vec_status);
}
}
--
1.7.2.3
- [Qemu-devel] [PATCH v2 1/3] target-ppc: simplify NaN propagation for vector functions,
Aurelien Jarno <=