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* [Bug target/114264] New: RISC-V: ICE in riscv-vector-costs.cc of gcc master branch
@ 2024-03-07 8:01 deminhan at gcc dot gnu.org
2024-03-08 2:43 ` [Bug target/114264] " cvs-commit at gcc dot gnu.org
2024-03-09 7:36 ` law at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: deminhan at gcc dot gnu.org @ 2024-03-07 8:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114264
Bug ID: 114264
Summary: RISC-V: ICE in riscv-vector-costs.cc of gcc master
branch
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: deminhan at gcc dot gnu.org
Target Milestone: ---
The following code can result in ICE:
-march=rv64gcv --param riscv-autovec-lmul=dynamic -O3
char *jpeg_difference7_input_buf;
void jpeg_difference7(int *diff_buf) {
unsigned width;
int samp, Rb;
while (--width) {
Rb = samp = *jpeg_difference7_input_buf;
*diff_buf++ = -(int)(samp + (long)Rb >> 1);
}
}
during GIMPLE pass: vect
testcase.i: In function 'jpeg_difference7':
testcase.i:2:6: internal compiler error: in compute_nregs_for_mode, at
config/riscv/riscv-vector-costs.cc:453
2 | void jpeg_difference7(int *diff_buf) {
| ^~~~~~~~~~~~~~~~
0xb2a30f compute_nregs_for_mode
../../../gcc/gcc/config/riscv/riscv-vector-costs.cc:453
0x17b19e6 max_number_of_live_regs
../../../gcc/gcc/config/riscv/riscv-vector-costs.cc:492
0x17b57a5 has_unexpected_spills_p
../../../gcc/gcc/config/riscv/riscv-vector-costs.cc:834
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/114264] RISC-V: ICE in riscv-vector-costs.cc of gcc master branch
2024-03-07 8:01 [Bug target/114264] New: RISC-V: ICE in riscv-vector-costs.cc of gcc master branch deminhan at gcc dot gnu.org
@ 2024-03-08 2:43 ` cvs-commit at gcc dot gnu.org
2024-03-09 7:36 ` law at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2024-03-08 2:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114264
--- Comment #1 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Demin Han <deminhan@gcc.gnu.org>:
https://gcc.gnu.org/g:42187c6968af9907de1f9b7563d87de739857684
commit r14-9380-g42187c6968af9907de1f9b7563d87de739857684
Author: demin.han <demin.han@starfivetech.com>
Date: Wed Mar 6 17:34:34 2024 +0800
RISC-V: Fix ICE in riscv vector costs
The following code can result in ICE:
-march=rv64gcv --param riscv-autovec-lmul=dynamic -O3
char *jpeg_difference7_input_buf;
void jpeg_difference7(int *diff_buf) {
unsigned width;
int samp, Rb;
while (--width) {
Rb = samp = *jpeg_difference7_input_buf;
*diff_buf++ = -(int)(samp + (long)Rb >> 1);
}
}
One biggest_mode update missed in one branch and trigger assertion fail.
gcc_assert (biggest_size >= mode_size);
Tested On RV64 and no regression.
PR target/114264
gcc/ChangeLog:
* config/riscv/riscv-vector-costs.cc: Fix ICE
gcc/testsuite/ChangeLog:
* gcc.dg/vect/costmodel/riscv/rvv/pr114264.c: New test.
Signed-off-by: demin.han <demin.han@starfivetech.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/114264] RISC-V: ICE in riscv-vector-costs.cc of gcc master branch
2024-03-07 8:01 [Bug target/114264] New: RISC-V: ICE in riscv-vector-costs.cc of gcc master branch deminhan at gcc dot gnu.org
2024-03-08 2:43 ` [Bug target/114264] " cvs-commit at gcc dot gnu.org
@ 2024-03-09 7:36 ` law at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: law at gcc dot gnu.org @ 2024-03-09 7:36 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114264
Jeffrey A. Law <law at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|UNCONFIRMED |RESOLVED
CC| |law at gcc dot gnu.org
--- Comment #2 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Fixed on the trunk.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2024-03-07 8:01 [Bug target/114264] New: RISC-V: ICE in riscv-vector-costs.cc of gcc master branch deminhan at gcc dot gnu.org
2024-03-08 2:43 ` [Bug target/114264] " cvs-commit at gcc dot gnu.org
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