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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 v2 10/21] Hexagon (target/hexagon) replace float32_mul_pow2 with float32_scalbn
Date: Wed, 31 Mar 2021 22:53:22 -0500	[thread overview]
Message-ID: <1617249213-22667-11-git-send-email-tsimpson@quicinc.com> (raw)
In-Reply-To: <1617249213-22667-1-git-send-email-tsimpson@quicinc.com>

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: 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



  parent reply	other threads:[~2021-04-01  3:55 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-01  3:53 [PATCH v2 00/21] Hexagon (target/hexagon) update Taylor Simpson
2021-04-01  3:53 ` [PATCH v2 01/21] Hexagon (target/hexagon) TCG generation cleanup Taylor Simpson
2021-04-02 17:25   ` Richard Henderson
2021-04-02 17:46   ` Richard Henderson
2021-04-02 19:42     ` Taylor Simpson
2021-04-02 20:00       ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 02/21] Hexagon (target/hexagon) remove unnecessary inline directives Taylor Simpson
2021-04-02 17:26   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 03/21] Hexagon (target/hexagon) use env_archcpu and env_cpu Taylor Simpson
2021-04-02 17:27   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 04/21] Hexagon (target/hexagon) properly generate TB end for DISAS_NORETURN Taylor Simpson
2021-04-02 17:34   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 05/21] Hexagon (target/hexagon) decide if pred has been written at TCG gen time Taylor Simpson
2021-04-02 17:44   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 06/21] Hexagon (target/hexagon) change variables from int to bool when appropriate Taylor Simpson
2021-04-01  3:53 ` [PATCH v2 07/21] Hexagon (target/hexagon) remove unused carry_from_add64 function Taylor Simpson
2021-04-01  3:53 ` [PATCH v2 08/21] Hexagon (target/hexagon) change type of softfloat_roundingmodes Taylor Simpson
2021-04-01  3:53 ` [PATCH v2 09/21] Hexagon (target/hexagon) use softfloat default NaN and tininess Taylor Simpson
2021-04-02 17:48   ` Richard Henderson
2021-04-01  3:53 ` Taylor Simpson [this message]
2021-04-01  3:53 ` [PATCH v2 11/21] Hexagon (target/hexagon) use softfloat for float-to-int conversions Taylor Simpson
2021-04-06 20:09   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 12/21] Hexagon (target/hexagon) add F2_sfrecipa instruction Taylor Simpson
2021-04-06 20:30   ` Richard Henderson
2021-04-06 20:46   ` Richard Henderson
2021-04-06 21:55     ` Taylor Simpson
2021-04-06 22:13       ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 13/21] Hexagon (target/hexagon) add F2_sfinvsqrta Taylor Simpson
2021-04-06 20:47   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 14/21] Hexagon (target/hexagon) add A5_ACS (vacsh) Taylor Simpson
2021-04-06 20:51   ` Richard Henderson
2021-04-06 21:31     ` Taylor Simpson
2021-04-01  3:53 ` [PATCH v2 15/21] Hexagon (target/hexagon) add A6_vminub_RdP Taylor Simpson
2021-04-06 20:57   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 16/21] Hexagon (target/hexagon) add A4_addp_c/A4_subp_c Taylor Simpson
2021-04-06 21:11   ` Richard Henderson
2021-04-06 21:58     ` Taylor Simpson
2021-04-01  3:53 ` [PATCH v2 17/21] Hexagon (target/hexagon) circular addressing Taylor Simpson
2021-04-06 22:11   ` Richard Henderson
2021-04-07  3:11     ` Taylor Simpson
2021-04-07 16:27       ` Taylor Simpson
2021-04-01  3:53 ` [PATCH v2 18/21] Hexagon (target/hexagon) bit reverse (brev) addressing Taylor Simpson
2021-04-06 22:35   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 19/21] Hexagon (target/hexagon) load and unpack bytes instructions Taylor Simpson
2021-04-06 22:46   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 20/21] Hexagon (target/hexagon) load into shifted register instructions Taylor Simpson
2021-04-06 22:50   ` Richard Henderson
2021-04-01  3:53 ` [PATCH v2 21/21] Hexagon (target/hexagon) CABAC decode bin Taylor Simpson
2021-04-06 22:54   ` Richard Henderson

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