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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
end of thread, other threads:[~2024-03-09 7:36 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 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
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