diff mbox series

RISC-V: Replace rtx REG for zero REGS operations

Message ID 20230907140557.3378043-1-juzhe.zhong@rivai.ai
State Accepted
Headers
Series RISC-V: Replace rtx REG for zero REGS operations |

Checks

Context Check Description
snail/gcc-patch-check success Github commit url

Commit Message

juzhe.zhong@rivai.ai Sept. 7, 2023, 2:05 p.m. UTC 
  This patch fixes these following FAILs:
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)

These FAILs because regno_reg_rtx[regno] is VLS mode in some regno which is not VLMAX AVL
gcc/ChangeLog:

	* config/riscv/riscv.cc (vector_zero_call_used_regs): Fix bug.

---
 gcc/config/riscv/riscv.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

juzhe.zhong@rivai.ai Sept. 7, 2023, 2:40 p.m. UTC | #1 
Forget about this patch. 
I found a better and reasonable way to fix it.



juzhe.zhong@rivai.ai
 
From: Juzhe-Zhong
Date: 2023-09-07 22:05
To: gcc-patches
CC: kito.cheng; kito.cheng; jeffreyalaw; rdapp.gcc; Juzhe-Zhong
Subject: [PATCH] RISC-V: Replace rtx REG for zero REGS operations
This patch fixes these following FAILs:
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)
 
These FAILs because regno_reg_rtx[regno] is VLS mode in some regno which is not VLMAX AVL
gcc/ChangeLog:
 
* config/riscv/riscv.cc (vector_zero_call_used_regs): Fix bug.
 
---
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 a3d3389e7e2..c0c9c990a23 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -8998,7 +8998,7 @@ vector_zero_call_used_regs (HARD_REG_SET need_zeroed_hardregs)
     {
       if (TEST_HARD_REG_BIT (need_zeroed_hardregs, regno))
{
-   rtx target = regno_reg_rtx[regno];
+   rtx target = gen_rtx_REG (RVVM1SImode, regno);
  machine_mode mode = GET_MODE (target);
  if (!emitted_vlmax_vsetvl)
-- 
2.36.3
diff mbox series

Patch

diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index a3d3389e7e2..c0c9c990a23 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -8998,7 +8998,7 @@  vector_zero_call_used_regs (HARD_REG_SET need_zeroed_hardregs)
     {
       if (TEST_HARD_REG_BIT (need_zeroed_hardregs, regno))
 	{
-	  rtx target = regno_reg_rtx[regno];
+	  rtx target = gen_rtx_REG (RVVM1SImode, regno);
 	  machine_mode mode = GET_MODE (target);
 
 	  if (!emitted_vlmax_vsetvl)