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From: "Alex Bennée" <alex.bennee@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Emilio G. Cota" <cota@braap.org>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Aurelien Jarno" <aurelien@aurel32.net>,
	"Peter Maydell" <peter.maydell@linaro.org>
Subject: [Qemu-devel] [PATCH v3 02/11] fp-bench: remove wrong exponent raise in fill_random
Date: Tue, 22 Jan 2019 21:50:07 +0000	[thread overview]
Message-ID: <20190122215016.18697-3-alex.bennee@linaro.org> (raw)
In-Reply-To: <20190122215016.18697-1-alex.bennee@linaro.org>

From: "Emilio G. Cota" <cota@braap.org>

At this point random_ops[] only contains normals, so there's
no need to do anything to them. In fact, raising the exponent
here can make the output !normal, which is precisely
what the comment says we want to avoid.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 tests/fp/fp-bench.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/tests/fp/fp-bench.c b/tests/fp/fp-bench.c
index 546bac9c9c..4ba5e1d2d4 100644
--- a/tests/fp/fp-bench.c
+++ b/tests/fp/fp-bench.c
@@ -176,8 +176,6 @@ static void fill_random(union fp *ops, int n_ops, enum precision prec,
             if (no_neg && float32_is_neg(ops[i].f32)) {
                 ops[i].f32 = float32_chs(ops[i].f32);
             }
-            /* raise the exponent to limit the frequency of denormal results */
-            ops[i].f32 |= 0x40000000;
             break;
         case PREC_DOUBLE:
         case PREC_FLOAT64:
@@ -185,8 +183,6 @@ static void fill_random(union fp *ops, int n_ops, enum precision prec,
             if (no_neg && float64_is_neg(ops[i].f64)) {
                 ops[i].f64 = float64_chs(ops[i].f64);
             }
-            /* raise the exponent to limit the frequency of denormal results */
-            ops[i].f64 |= LIT64(0x4000000000000000);
             break;
         default:
             g_assert_not_reached();
-- 
2.17.1

  parent reply	other threads:[~2019-01-22 21:50 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-22 21:50 [Qemu-devel] [PATCH v3 00/11] current fpu/next queue (tests & build fix) Alex Bennée
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 01/11] fp-bench: fix update_random_ops Alex Bennée
2019-01-22 21:50 ` Alex Bennée [this message]
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 03/11] berkeley-testfloat-3: pull changes Alex Bennée
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 04/11] tests/fp/Makefile: do not use gcc-only -W flags Alex Bennée
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 05/11] fp-test: fix signature of slow_clear_flags and qemu_clear_flags Alex Bennée
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 06/11] tests/fp/platform.h: include config-host.h Alex Bennée
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 07/11] softfloat: enforce softfloat if the host's FMA is broken Alex Bennée
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 08/11] include/fpu/softfloat: Fix compilation with Clang on s390x Alex Bennée
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 09/11] tests/Makefile: add floating point tests Alex Bennée
2019-01-22 23:45   ` Emilio G. Cota
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 10/11] scripts/archive-source: include softfloat tests Alex Bennée
2019-01-22 21:50 ` [Qemu-devel] [PATCH v3 11/11] tests/Makfile: add check-softfloat rule Alex Bennée
2019-01-22 23:46   ` Emilio G. Cota
2019-01-31 17:56 ` [Qemu-devel] [PATCH v3 00/11] current fpu/next queue (tests & build fix) no-reply

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