From: Taylor Simpson <tsimpson@quicinc.com>
To: qemu-devel@nongnu.org
Cc: ale@rev.ng, philmd@redhat.com, tsimpson@quicinc.com,
richard.henderson@linaro.org, bcain@quicinc.com
Subject: [PATCH 08/15] Hexagon (target/hexagon) replace float32_mul_pow2 with float32_scalbn
Date: Wed, 24 Mar 2021 21:50:03 -0500 [thread overview]
Message-ID: <1616640610-17319-9-git-send-email-tsimpson@quicinc.com> (raw)
In-Reply-To: <1616640610-17319-1-git-send-email-tsimpson@quicinc.com>
Address feedback from Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Taylor Simpson <tsimpson@quicinc.com>
---
target/hexagon/arch.c | 28 +++++++++++-----------------
1 file changed, 11 insertions(+), 17 deletions(-)
diff --git a/target/hexagon/arch.c b/target/hexagon/arch.c
index bb51f19..40b6e3d 100644
--- a/target/hexagon/arch.c
+++ b/target/hexagon/arch.c
@@ -143,12 +143,6 @@ void arch_fpop_end(CPUHexagonState *env)
}
}
-static float32 float32_mul_pow2(float32 a, uint32_t p, float_status *fp_status)
-{
- float32 b = make_float32((SF_BIAS + p) << SF_MANTBITS);
- return float32_mul(a, b, fp_status);
-}
-
int arch_sf_recip_common(float32 *Rs, float32 *Rt, float32 *Rd, int *adjust,
float_status *fp_status)
{
@@ -217,22 +211,22 @@ int arch_sf_recip_common(float32 *Rs, float32 *Rt, float32 *Rd, int *adjust,
if ((n_exp - d_exp + SF_BIAS) <= SF_MANTBITS) {
/* Near quotient underflow / inexact Q */
PeV = 0x80;
- RtV = float32_mul_pow2(RtV, -64, fp_status);
- RsV = float32_mul_pow2(RsV, 64, fp_status);
+ RtV = float32_scalbn(RtV, -64, fp_status);
+ RsV = float32_scalbn(RsV, 64, fp_status);
} else if ((n_exp - d_exp + SF_BIAS) > (SF_MAXEXP - 24)) {
/* Near quotient overflow */
PeV = 0x40;
- RtV = float32_mul_pow2(RtV, 32, fp_status);
- RsV = float32_mul_pow2(RsV, -32, fp_status);
+ RtV = float32_scalbn(RtV, 32, fp_status);
+ RsV = float32_scalbn(RsV, -32, fp_status);
} else if (n_exp <= SF_MANTBITS + 2) {
- RtV = float32_mul_pow2(RtV, 64, fp_status);
- RsV = float32_mul_pow2(RsV, 64, fp_status);
+ RtV = float32_scalbn(RtV, 64, fp_status);
+ RsV = float32_scalbn(RsV, 64, fp_status);
} else if (d_exp <= 1) {
- RtV = float32_mul_pow2(RtV, 32, fp_status);
- RsV = float32_mul_pow2(RsV, 32, fp_status);
+ RtV = float32_scalbn(RtV, 32, fp_status);
+ RsV = float32_scalbn(RsV, 32, fp_status);
} else if (d_exp > 252) {
- RtV = float32_mul_pow2(RtV, -32, fp_status);
- RsV = float32_mul_pow2(RsV, -32, fp_status);
+ RtV = float32_scalbn(RtV, -32, fp_status);
+ RsV = float32_scalbn(RsV, -32, fp_status);
}
RdV = 0;
ret = 1;
@@ -274,7 +268,7 @@ int arch_sf_invsqrt_common(float32 *Rs, float32 *Rd, int *adjust,
/* Basic checks passed */
r_exp = float32_getexp(RsV);
if (r_exp <= 24) {
- RsV = float32_mul_pow2(RsV, 64, fp_status);
+ RsV = float32_scalbn(RsV, 64, fp_status);
PeV = 0xe0;
}
RdV = 0;
--
2.7.4
next prev parent reply other threads:[~2021-03-25 2:59 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-25 2:49 [PATCH 00/15] Hexagon (target/hexagon) update Taylor Simpson
2021-03-25 2:49 ` [PATCH 01/15] Hexagon (target/hexagon) TCG generation cleanup Taylor Simpson
2021-03-25 12:56 ` Richard Henderson
2021-03-25 2:49 ` [PATCH 02/15] Hexagon (target/hexagon) remove unnecessary inline directives Taylor Simpson
2021-03-25 13:02 ` Richard Henderson
2021-03-25 2:49 ` [PATCH 03/15] Hexagon (target/hexagon) properly generate TB end for DISAS_NORETURN Taylor Simpson
2021-03-25 14:38 ` Richard Henderson
2021-03-25 2:49 ` [PATCH 04/15] Hexagon (target/hexagon) decide if pred has been written at TCG gen time Taylor Simpson
2021-03-25 14:42 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 05/15] Hexagon (target/hexagon) change variables from int to bool when appropriate Taylor Simpson
2021-03-25 9:35 ` Philippe Mathieu-Daudé
2021-03-25 14:44 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 06/15] Hexagon (target/hexagon) utility function changes Taylor Simpson
2021-03-25 14:45 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 07/15] Hexagon (target/hexagon) use softfloat default NaN and tininess Taylor Simpson
2021-03-25 14:54 ` Richard Henderson
2021-03-25 2:50 ` Taylor Simpson [this message]
2021-03-25 14:55 ` [PATCH 08/15] Hexagon (target/hexagon) replace float32_mul_pow2 with float32_scalbn Richard Henderson
2021-03-25 2:50 ` [PATCH 09/15] Hexagon (target/hexagon) use softfloat for float-to-int conversions Taylor Simpson
2021-03-25 16:09 ` Richard Henderson
2021-03-25 16:17 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 10/15] Hexagon (target/hexagon) instructions with multiple definitions Taylor Simpson
2021-03-25 16:24 ` Richard Henderson
2021-03-29 21:55 ` Taylor Simpson
2021-03-25 2:50 ` [PATCH 11/15] Hexagon (target/hexagon) circular addressing Taylor Simpson
2021-03-25 16:33 ` Richard Henderson
2021-03-25 17:37 ` Taylor Simpson
2021-03-25 2:50 ` [PATCH 12/15] Hexagon (target/hexagon) bit reverse (brev) addressing Taylor Simpson
2021-03-25 16:38 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 13/15] Hexagon (target/hexagon) load and unpack bytes instructions Taylor Simpson
2021-03-25 2:50 ` [PATCH 14/15] Hexagon (target/hexagon) load into shifted register instructions Taylor Simpson
2021-03-25 16:44 ` Richard Henderson
2021-03-25 2:50 ` [PATCH 15/15] Hexagon (target/hexagon) CABAC decode bin Taylor Simpson
2021-03-25 16:54 ` Richard Henderson
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