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[PULL 29/72] target/i386: Set Float3NaNPropRule explicitly
From: |
Peter Maydell |
Subject: |
[PULL 29/72] target/i386: Set Float3NaNPropRule explicitly |
Date: |
Wed, 11 Dec 2024 16:19:21 +0000 |
Set the Float3NaNPropRule explicitly for i386. We had no
i386-specific behaviour in the old ifdef ladder, so we were using the
default "prefer a then b then c" fallback; this is actually the
correct per-the-spec handling for i386.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20241202131347.498124-25-peter.maydell@linaro.org
---
target/i386/tcg/fpu_helper.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c
index 3295753e075..4303b3356aa 100644
--- a/target/i386/tcg/fpu_helper.c
+++ b/target/i386/tcg/fpu_helper.c
@@ -180,6 +180,7 @@ void cpu_init_fp_statuses(CPUX86State *env)
* there are multiple input NaNs they are selected in the order a, b, c.
*/
set_float_infzeronan_rule(float_infzeronan_dnan_never, &env->sse_status);
+ set_float_3nan_prop_rule(float_3nan_prop_abc, &env->sse_status);
}
static inline uint8_t save_exception_flags(CPUX86State *env)
--
2.34.1
- [PULL 20/72] softfloat: Allow runtime choice of NaN propagation for muladd, (continued)
- [PULL 20/72] softfloat: Allow runtime choice of NaN propagation for muladd, Peter Maydell, 2024/12/11
- [PULL 23/72] target/loongarch: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/11
- [PULL 24/72] target/ppc: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/11
- [PULL 22/72] target/arm: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/11
- [PULL 21/72] tests/fp: Explicitly set 3-NaN propagation rule, Peter Maydell, 2024/12/11
- [PULL 27/72] target/mips: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/11
- [PULL 28/72] target/xtensa: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/11
- [PULL 30/72] target/hppa: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/11
- [PULL 25/72] target/s390x: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/11
- [PULL 26/72] target/sparc: Set Float3NaNPropRule explicitly, Peter Maydell, 2024/12/11
- [PULL 29/72] target/i386: Set Float3NaNPropRule explicitly,
Peter Maydell <=
- [PULL 33/72] softfloat: Create floatx80 default NaN from parts64_default_nan, Peter Maydell, 2024/12/11
- [PULL 31/72] fpu: Remove use_first_nan field from float_status, Peter Maydell, 2024/12/11
- [PULL 32/72] target/m68k: Don't pass NULL float_status to floatx80_default_nan(), Peter Maydell, 2024/12/11
- [PULL 34/72] target/loongarch: Use normal float_status in fclass_s and fclass_d helpers, Peter Maydell, 2024/12/11
- [PULL 35/72] target/m68k: In frem helper, initialize local float_status from env->fp_status, Peter Maydell, 2024/12/11
- [PULL 36/72] target/m68k: Init local float_status from env fp_status in gdb get/set reg, Peter Maydell, 2024/12/11
- [PULL 37/72] target/sparc: Initialize local scratch float_status from env->fp_status, Peter Maydell, 2024/12/11
- [PULL 38/72] target/ppc: Use env->fp_status in helper_compute_fprf functions, Peter Maydell, 2024/12/11
- [PULL 39/72] target/arm: Copy entire float_status in is_ebf, Peter Maydell, 2024/12/11
- [PULL 40/72] fpu: Allow runtime choice of default NaN value, Peter Maydell, 2024/12/11