From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PULL 05/45] target/arm: Remove unnecessary range check for VSHL
Date: Thu, 14 May 2020 15:20:58 +0100 [thread overview]
Message-ID: <20200514142138.20875-6-peter.maydell@linaro.org> (raw)
In-Reply-To: <20200514142138.20875-1-peter.maydell@linaro.org>
From: Richard Henderson <richard.henderson@linaro.org>
In 1dc8425e551, while converting to gvec, I added an extra range check
against the shift count. This was unnecessary because the encoding of
the shift count produces 0 to the element size - 1.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20200513163245.17915-5-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/translate.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff --git a/target/arm/translate.c b/target/arm/translate.c
index 3c489852dce..2eec689c5ed 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -5752,16 +5752,8 @@ static int disas_neon_data_insn(DisasContext *s, uint32_t insn)
gen_gvec_sli(size, rd_ofs, rm_ofs, shift,
vec_size, vec_size);
} else { /* VSHL */
- /* Shifts larger than the element size are
- * architecturally valid and results in zero.
- */
- if (shift >= 8 << size) {
- tcg_gen_gvec_dup_imm(size, rd_ofs,
- vec_size, vec_size, 0);
- } else {
- tcg_gen_gvec_shli(size, rd_ofs, rm_ofs, shift,
- vec_size, vec_size);
- }
+ tcg_gen_gvec_shli(size, rd_ofs, rm_ofs, shift,
+ vec_size, vec_size);
}
return 0;
}
--
2.20.1
next prev parent reply other threads:[~2020-05-14 14:34 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-14 14:20 [PULL 00/45] target-arm queue Peter Maydell
2020-05-14 14:20 ` [PULL 01/45] target/arm: Use correct GDB XML for M-profile cores Peter Maydell
2020-05-14 14:20 ` [PULL 02/45] target/arm: Create gen_gvec_[us]sra Peter Maydell
2020-05-14 14:20 ` [PULL 03/45] target/arm: Create gen_gvec_{u,s}{rshr,rsra} Peter Maydell
2020-05-14 14:20 ` [PULL 04/45] target/arm: Create gen_gvec_{sri,sli} Peter Maydell
2020-05-14 14:20 ` Peter Maydell [this message]
2020-05-14 14:20 ` [PULL 06/45] target/arm: Tidy handle_vec_simd_shri Peter Maydell
2020-05-14 14:21 ` [PULL 07/45] target/arm: Create gen_gvec_{ceq,clt,cle,cgt,cge}0 Peter Maydell
2020-05-14 14:21 ` [PULL 08/45] target/arm: Create gen_gvec_{mla,mls} Peter Maydell
2020-05-14 14:21 ` [PULL 09/45] target/arm: Swap argument order for VSHL during decode Peter Maydell
2020-05-14 14:21 ` [PULL 10/45] target/arm: Create gen_gvec_{cmtst,ushl,sshl} Peter Maydell
2020-05-14 14:21 ` [PULL 11/45] target/arm: Create gen_gvec_{uqadd, sqadd, uqsub, sqsub} Peter Maydell
2020-05-14 14:21 ` [PULL 12/45] target/arm: Remove fp_status from helper_{recpe, rsqrte}_u32 Peter Maydell
2020-05-14 14:21 ` [PULL 13/45] target/arm: Create gen_gvec_{qrdmla,qrdmls} Peter Maydell
2020-05-14 14:21 ` [PULL 14/45] target/arm: Pass pointer to qc to qrdmla/qrdmls Peter Maydell
2020-05-14 14:21 ` [PULL 15/45] target/arm: Clear tail in gvec_fmul_idx_*, gvec_fmla_idx_* Peter Maydell
2020-05-14 14:21 ` [PULL 16/45] target/arm: Vectorize SABD/UABD Peter Maydell
2020-05-14 14:21 ` [PULL 17/45] target/arm: Vectorize SABA/UABA Peter Maydell
2020-05-21 13:11 ` Peter Maydell
2020-05-14 14:21 ` [PULL 18/45] aspeed: Add support for the sonorapass-bmc board Peter Maydell
2020-05-14 14:21 ` [PULL 19/45] acpi: nvdimm: change NVDIMM_UUID_LE to a common macro Peter Maydell
2020-05-14 14:21 ` [PULL 20/45] hw/arm/virt: Introduce a RAS machine option Peter Maydell
2020-05-14 14:21 ` [PULL 21/45] docs: APEI GHES generation and CPER record description Peter Maydell
2020-05-14 14:21 ` [PULL 22/45] ACPI: Build related register address fields via hardware error fw_cfg blob Peter Maydell
2020-05-14 14:21 ` [PULL 23/45] ACPI: Build Hardware Error Source Table Peter Maydell
2020-05-14 14:21 ` [PULL 24/45] ACPI: Record the Generic Error Status Block address Peter Maydell
2020-05-14 14:21 ` [PULL 25/45] KVM: Move hwpoison page related functions into kvm-all.c Peter Maydell
2020-05-14 14:21 ` [PULL 26/45] ACPI: Record Generic Error Status Block(GESB) table Peter Maydell
2020-05-21 13:03 ` Peter Maydell
2020-05-21 15:31 ` Michael S. Tsirkin
2020-06-19 17:21 ` Peter Maydell
2020-06-20 1:50 ` Dongjiu Geng
2020-05-14 14:21 ` [PULL 27/45] target-arm: kvm64: handle SIGBUS signal from kernel or KVM Peter Maydell
2020-05-14 14:21 ` [PULL 28/45] MAINTAINERS: Add ACPI/HEST/GHES entries Peter Maydell
2020-05-14 14:21 ` [PULL 29/45] target/arm: Convert Neon 3-reg-same VQRDMLAH/VQRDMLSH to decodetree Peter Maydell
2020-05-14 14:21 ` [PULL 30/45] target/arm: Convert Neon 3-reg-same SHA " Peter Maydell
2020-05-14 14:21 ` [PULL 31/45] target/arm: Convert Neon 64-bit element 3-reg-same insns Peter Maydell
2020-05-14 14:21 ` [PULL 32/45] target/arm: Convert Neon VHADD " Peter Maydell
2020-05-14 14:21 ` [PULL 33/45] target/arm: Convert Neon VABA/VABD 3-reg-same to decodetree Peter Maydell
2020-05-14 14:21 ` [PULL 34/45] target/arm: Convert Neon VRHADD, VHSUB 3-reg-same insns " Peter Maydell
2020-05-14 14:21 ` [PULL 35/45] target/arm: Convert Neon VQSHL, VRSHL, VQRSHL " Peter Maydell
2020-05-14 14:21 ` [PULL 36/45] target/arm: Convert Neon VPMAX/VPMIN " Peter Maydell
2020-05-14 14:21 ` [PULL 37/45] target/arm: Convert Neon VPADD " Peter Maydell
2020-05-14 14:21 ` [PULL 38/45] target/arm: Convert Neon VQDMULH/VQRDMULH 3-reg-same " Peter Maydell
2020-05-14 14:21 ` [PULL 39/45] target/arm: Convert Neon VADD, VSUB, VABD 3-reg-same insns " Peter Maydell
2020-05-14 14:21 ` [PULL 40/45] target/arm: Convert Neon VPMIN/VPMAX/VPADD float " Peter Maydell
2020-05-14 14:21 ` [PULL 41/45] target/arm: Convert Neon fp VMUL, VMLA, VMLS " Peter Maydell
2020-05-14 14:21 ` [PULL 42/45] target/arm: Convert Neon 3-reg-same compare " Peter Maydell
2020-05-14 14:21 ` [PULL 43/45] target/arm: Move 'env' argument of recps_f32 and rsqrts_f32 helpers to usual place Peter Maydell
2020-05-14 14:21 ` [PULL 44/45] target/arm: Convert Neon fp VMAX/VMIN/VMAXNM/VMINNM/VRECPS/VRSQRTS to decodetree Peter Maydell
2020-05-14 14:21 ` [PULL 45/45] target/arm: Convert NEON VFMA, VFMS 3-reg-same insns " Peter Maydell
2020-05-14 16:42 ` [PULL 00/45] target-arm queue Peter Maydell
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