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* [gcc(refs/vendors/riscv/heads/gcc-13-with-riscv-opts)] RISC-V: Fix incorrect nregs calculation for VLS modes
@ 2023-09-11 13:38 Jeff Law
0 siblings, 0 replies; only message in thread
From: Jeff Law @ 2023-09-11 13:38 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:3ee4f0d4a4cd8cc9416e4672cfb38cf31a2f36f1
commit 3ee4f0d4a4cd8cc9416e4672cfb38cf31a2f36f1
Author: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Date: Fri Sep 8 15:52:03 2023 +0800
RISC-V: Fix incorrect nregs calculation for VLS modes
This patch fixes obvious bug: TARGET_MIN_VLEN is bitsize.
All these following bugs are fixed with this patch:
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O0 (internal compiler error: in gen_reg_rtx, at emit-rtl.cc:1176)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O0 (test for excess errors)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O1 (internal compiler error: in gen_reg_rtx, at emit-rtl.cc:1176)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O1 (test for excess errors)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O2 (internal compiler error: in gen_reg_rtx, at emit-rtl.cc:1176)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O2 (test for excess errors)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O2 -flto -fno-use-linker-plugin -flto-partition=none (internal compiler error: in gen_reg_rtx, at emit-rtl.cc:1176)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O2 -flto -fno-use-linker-plugin -flto-partition=none (test for excess errors)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects (internal compiler error: in gen_reg_rtx, at emit-rtl.cc:1176)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects (test for excess errors)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O3 -g (internal compiler error: in gen_reg_rtx, at emit-rtl.cc:1176)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -O3 -g (test for excess errors)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -Os (internal compiler error: in gen_reg_rtx, at emit-rtl.cc:1176)
FAIL: gcc.target/riscv/zero-scratch-regs-3.c -Os (test for excess errors)
FAIL: gcc.target/riscv/rvv/base/mov-13.c (internal compiler error: in partial_subreg_p, at rtl.h:3186)
FAIL: gcc.target/riscv/rvv/base/mov-13.c (test for excess errors)
FAIL: gcc.target/riscv/rvv/base/spill-1.c (internal compiler error: in partial_subreg_p, at rtl.h:3186)
FAIL: gcc.target/riscv/rvv/base/spill-1.c (test for excess errors)
FAIL: gcc.target/riscv/rvv/base/spill-2.c (internal compiler error: in partial_subreg_p, at rtl.h:3186)
FAIL: gcc.target/riscv/rvv/base/spill-2.c (test for excess errors)
FAIL: gcc.target/riscv/rvv/base/spill-3.c (internal compiler error: in partial_subreg_p, at rtl.h:3186)
FAIL: gcc.target/riscv/rvv/base/spill-3.c (test for excess errors)
FAIL: gcc.target/riscv/rvv/base/spill-4.c (internal compiler error: in partial_subreg_p, at rtl.h:3186)
FAIL: gcc.target/riscv/rvv/base/spill-4.c (test for excess errors)
FAIL: gcc.target/riscv/rvv/base/spill-5.c (internal compiler error: in partial_subreg_p, at rtl.h:3186)
FAIL: gcc.target/riscv/rvv/base/spill-5.c (test for excess errors)
FAIL: gcc.target/riscv/rvv/base/spill-6.c (internal compiler error: in partial_subreg_p, at rtl.h:3186)
FAIL: gcc.target/riscv/rvv/base/spill-6.c (test for excess errors)
FAIL: gcc.target/riscv/rvv/base/spill-sp-adjust.c (internal compiler error: in partial_subreg_p, at rtl.h:3186)
FAIL: gcc.target/riscv/rvv/base/spill-sp-adjust.c (test for excess errors)
gcc/ChangeLog:
* config/riscv/riscv.cc (riscv_hard_regno_nregs): Fix bug.
(cherry picked from commit f9cb357ae962ba2922b8507f4d96227780a063b9)
Diff:
---
gcc/config/riscv/riscv.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index fb96493d974f..7a0f9f6465df 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -7548,7 +7548,7 @@ riscv_hard_regno_nregs (unsigned int regno, machine_mode mode)
/* For VLS modes, we allocate registers according to TARGET_MIN_VLEN. */
if (riscv_v_ext_vls_mode_p (mode))
{
- int size = GET_MODE_SIZE (mode).to_constant ();
+ int size = GET_MODE_BITSIZE (mode).to_constant ();
if (size < TARGET_MIN_VLEN)
return 1;
else
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