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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Subject: Re: [PATCH 47/76] target/arm: Implement FPCR.AH semantics for FMAXV and FMINV
Date: Sun, 26 Jan 2025 04:47:02 -0800	[thread overview]
Message-ID: <930f5644-80de-46ad-a57c-7bf7a7a50fbe@linaro.org> (raw)
In-Reply-To: <20250124162836.2332150-48-peter.maydell@linaro.org>

On 1/24/25 08:28, Peter Maydell wrote:
> Implement the FPCR.AH semantics for FMAXV and FMINV.  These are the
> "recursively reduce all lanes of a vector to a scalar result" insns;
> we just need to use the_ah_ helper for the reduction step when
> FPCR.AH == 1.
> 
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
>   target/arm/tcg/translate-a64.c | 28 ++++++++++++++++++----------
>   1 file changed, 18 insertions(+), 10 deletions(-)

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

r~


  reply	other threads:[~2025-01-26 12:47 UTC|newest]

Thread overview: 167+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-24 16:27 [PATCH 00/76] target/arm: Implement FEAT_AFP and FEAT_RPRES Peter Maydell
2025-01-24 16:27 ` [PATCH 01/76] target/i386: Do not raise Invalid for 0 * Inf + QNaN Peter Maydell
2025-01-24 16:27 ` [PATCH 02/76] tests/tcg/x86_64/fma: Test some x86 fused-multiply-add cases Peter Maydell
2025-01-24 17:15   ` Alex Bennée
2025-01-27  9:54     ` Peter Maydell
2025-01-24 16:27 ` [PATCH 03/76] target/arm: arm_reset_sve_state() should set FPSR, not FPCR Peter Maydell
2025-01-25 15:07   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 04/76] target/arm: Use FPSR_ constants in vfp_exceptbits_from_host() Peter Maydell
2025-01-25 15:07   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 05/76] target/arm: Use uint32_t " Peter Maydell
2025-01-25 15:08   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 06/76] target/arm: Define new fp_status_a32 and fp_status_a64 Peter Maydell
2025-01-25 15:12   ` Richard Henderson
2025-01-27  4:59   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 07/76] target/arm: Use vfp.fp_status_a64 in A64-only helper functions Peter Maydell
2025-01-25 15:15   ` Richard Henderson
2025-01-28 12:35     ` Peter Maydell
2025-01-28 15:54       ` Richard Henderson
2025-01-24 16:27 ` [PATCH 08/76] target/arm: Use fp_status_a32 in vjvct helper Peter Maydell
2025-01-25 15:16   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 09/76] target/arm: Use fp_status_a32 in vfp_cmp helpers Peter Maydell
2025-01-25 15:18   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 10/76] target/arm: Use FPST_FPCR_A32 in A32 decoder Peter Maydell
2025-01-25 15:18   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 11/76] target/arm: Use FPST_FPCR_A64 in A64 decoder Peter Maydell
2025-01-25 15:19   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 12/76] target/arm: Remove now-unused vfp.fp_status and FPST_FPCR Peter Maydell
2025-01-25 15:20   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 13/76] target/arm: Define new fp_status_f16_a32 and fp_status_f16_a64 Peter Maydell
2025-01-25 15:21   ` Richard Henderson
2025-01-27  5:00   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 14/76] target/arm: Use fp_status_f16_a32 in AArch32-only helpers Peter Maydell
2025-01-25 15:21   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 15/76] target/arm: Use fp_status_f16_a64 in AArch64-only helpers Peter Maydell
2025-01-25 15:22   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 16/76] target/arm: Use FPST_FPCR_F16_A32 in A32 decoder Peter Maydell
2025-01-25 15:23   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 17/76] target/arm: Use FPST_FPCR_F16_A64 in A64 decoder Peter Maydell
2025-01-25 15:23   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 18/76] target/arm: Remove now-unused vfp.fp_status_f16 and FPST_FPCR_F16 Peter Maydell
2025-01-25 15:23   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 19/76] fpu: Rename float_flag_input_denormal to float_flag_input_denormal_flushed Peter Maydell
2025-01-25 15:25   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 20/76] fpu: Rename float_flag_output_denormal to float_flag_output_denormal_flushed Peter Maydell
2025-01-25 15:26   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 21/76] fpu: Fix a comment in softfloat-types.h Peter Maydell
2025-01-25 15:27   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 22/76] fpu: Add float_class_denormal Peter Maydell
2025-01-25 15:31   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 23/76] fpu: Implement float_flag_input_denormal_used Peter Maydell
2025-01-25 15:42   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 24/76] fpu: allow flushing of output denormals to be after rounding Peter Maydell
2025-01-25 16:41   ` Richard Henderson
2025-01-27 10:01     ` Peter Maydell
2025-01-27 16:09       ` Richard Henderson
2025-01-29 13:04     ` Peter Maydell
2025-01-31 13:36       ` Richard Henderson
2025-01-24 16:27 ` [PATCH 25/76] target/arm: Remove redundant advsimd float16 helpers Peter Maydell
2025-01-25 16:59   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 26/76] target/arm: Use FPST_FPCR_F16_A64 for halfprec-to-other conversions Peter Maydell
2025-01-25 17:01   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 27/76] target/arm: Define FPCR AH, FIZ, NEP bits Peter Maydell
2025-01-25 17:08   ` Richard Henderson
2025-01-31 17:05     ` Peter Maydell
2025-01-24 16:27 ` [PATCH 28/76] target/arm: Implement FPCR.FIZ handling Peter Maydell
2025-01-25 17:25   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 29/76] target/arm: Adjust FP behaviour for FPCR.AH = 1 Peter Maydell
2025-01-25 17:27   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 30/76] target/arm: Adjust exception flag handling for AH " Peter Maydell
2025-01-25 17:29   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 31/76] target/arm: Add FPCR.AH to tbflags Peter Maydell
2025-01-25 17:30   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 32/76] target/arm: Set up float_status to use for FPCR.AH=1 behaviour Peter Maydell
2025-01-25 17:36   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 33/76] target/arm: Use FPST_FPCR_AH for FRECPE, FRECPS, FRECPX, FRSQRTE, FRSQRTS Peter Maydell
2025-01-25 17:40   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 34/76] target/arm: Use FPST_FPCR_AH for BFCVT* insns Peter Maydell
2025-01-25 17:42   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 35/76] target/arm: Use FPST_FPCR_AH for BFMLAL*, BFMLSL* insns Peter Maydell
2025-01-25 17:44   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 36/76] target/arm: Add FPCR.NEP to TBFLAGS Peter Maydell
2025-01-25 17:45   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 37/76] target/arm: Define and use new write_fp_*reg_merging() functions Peter Maydell
2025-01-25 17:52   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 38/76] target/arm: Handle FPCR.NEP for 3-input scalar operations Peter Maydell
2025-01-25 17:53   ` Richard Henderson
2025-01-24 16:27 ` [PATCH 39/76] target/arm: Handle FPCR.NEP for BFCVT scalar Peter Maydell
2025-01-25 17:55   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 40/76] target/arm: Handle FPCR.NEP for 1-input scalar operations Peter Maydell
2025-01-26 12:33   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 41/76] target/arm: Handle FPCR.NEP in do_cvtf_scalar() Peter Maydell
2025-01-26 12:33   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 42/76] target/arm: Handle FPCR.NEP for scalar FABS and FNEG Peter Maydell
2025-01-26 12:34   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 43/76] target/arm: Handle FPCR.NEP for FCVTXN (scalar) Peter Maydell
2025-01-26 12:36   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 44/76] target/arm: Handle FPCR.NEP for NEP for FMUL, FMULX scalar by element Peter Maydell
2025-01-26 12:36   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 45/76] target/arm: Implement FPCR.AH semantics for scalar FMIN/FMAX Peter Maydell
2025-01-26 12:43   ` Richard Henderson
2025-01-31 13:09     ` Peter Maydell
2025-01-31 13:37       ` Richard Henderson
2025-01-24 16:28 ` [PATCH 46/76] target/arm: Implement FPCR.AH semantics for vector FMIN/FMAX Peter Maydell
2025-01-26 12:45   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 47/76] target/arm: Implement FPCR.AH semantics for FMAXV and FMINV Peter Maydell
2025-01-26 12:47   ` Richard Henderson [this message]
2025-01-24 16:28 ` [PATCH 48/76] target/arm: Implement FPCR.AH semantics for FMINP and FMAXP Peter Maydell
2025-01-26 12:49   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 49/76] target/arm: Implement FPCR.AH semantics for SVE FMAXV and FMINV Peter Maydell
2025-01-26 12:51   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 50/76] target/arm: Implement FPCR.AH semantics for SVE FMIN/FMAX immediate Peter Maydell
2025-01-26 12:54   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 51/76] target/arm: Implement FPCR.AH semantics for SVE FMIN/FMAX vector Peter Maydell
2025-01-26 12:55   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 52/76] target/arm: Implement FPCR.AH handling of negation of NaN Peter Maydell
2025-01-26 13:00   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 53/76] target/arm: Implement FPCR.AH handling for scalar FABS and FABD Peter Maydell
2025-01-26 13:01   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 54/76] target/arm: Handle FPCR.AH in vector FABD Peter Maydell
2025-01-26 13:03   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 55/76] target/arm: Handle FPCR.AH in SVE FNEG Peter Maydell
2025-01-26 13:05   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 56/76] target/arm: Handle FPCR.AH in SVE FABS Peter Maydell
2025-01-26 13:05   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 57/76] target/arm: Handle FPCR.AH in SVE FABD Peter Maydell
2025-01-26 13:06   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 58/76] target/arm: Handle FPCR.AH in negation steps in FCADD Peter Maydell
2025-01-26 13:08   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 59/76] target/arm: Handle FPCR.AH in negation steps in SVE FCADD Peter Maydell
2025-01-26 13:10   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 60/76] target/arm: Handle FPCR.AH in FMLSL Peter Maydell
2025-01-26 13:13   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 61/76] target/arm: Handle FPCR.AH in FRECPS and FRSQRTS scalar insns Peter Maydell
2025-01-26 13:14   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 62/76] target/arm: Handle FPCR.AH in FRECPS and FRSQRTS vector insns Peter Maydell
2025-01-26 13:15   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 63/76] target/arm: Handle FPCR.AH in negation step in FMLS (indexed) Peter Maydell
2025-01-26 13:16   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 64/76] target/arm: Handle FPCR.AH in negation in FMLS (vector) Peter Maydell
2025-01-26 13:17   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 65/76] target/arm: Handle FPCR.AH in negation step in SVE " Peter Maydell
2025-01-26 13:19   ` Richard Henderson
2025-01-27 20:41   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 66/76] target/arm: Handle FPCR.AH in SVE FTSSEL Peter Maydell
2025-01-26 13:20   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 67/76] target/arm: Handle FPCR.AH in SVE FTMAD Peter Maydell
2025-01-26 13:21   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 68/76] target/arm: Enable FEAT_AFP for '-cpu max' Peter Maydell
2025-01-26 13:21   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 69/76] target/arm: Plumb FEAT_RPRES frecpe and frsqrte through to new helper Peter Maydell
2025-01-26 13:23   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 70/76] target/arm: Implement increased precision FRECPE Peter Maydell
2025-01-26 13:26   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 71/76] target/arm: Implement increased precision FRSQRTE Peter Maydell
2025-01-26 13:28   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 72/76] target/arm: Enable FEAT_RPRES for -cpu max Peter Maydell
2025-01-26 13:29   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 73/76] target/i386: Detect flush-to-zero after rounding Peter Maydell
2025-01-26 13:30   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 74/76] target/i386: Use correct type for get_float_exception_flags() values Peter Maydell
2025-01-26 13:30   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 75/76] target/i386: Wire up MXCSR.DE and FPUS.DE correctly Peter Maydell
2025-01-26 13:31   ` Richard Henderson
2025-01-24 16:28 ` [PATCH 76/76] tests/tcg/x86_64/fma: add test for exact-denormal output Peter Maydell
2025-01-26 13:32   ` Richard Henderson
2025-01-24 16:35 ` [PATCH 00/76] target/arm: Implement FEAT_AFP and FEAT_RPRES Peter Maydell
2025-01-28 13:23 ` Peter Maydell

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