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* [Bug target/108805] New: [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above @ 2023-02-15 14:37 zsojka at seznam dot cz 2023-02-15 19:37 ` [Bug rtl-optimization/108805] " ubizjak at gmail dot com ` (4 more replies) 0 siblings, 5 replies; 6+ messages in thread From: zsojka at seznam dot cz @ 2023-02-15 14:37 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108805 Bug ID: 108805 Summary: [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above Product: gcc Version: 13.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: zsojka at seznam dot cz Target Milestone: --- Host: x86_64-pc-linux-gnu Target: x86_64-pc-linux-gnu Created attachment 54469 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54469&action=edit reduced testcase Compiler output: $ x86_64-pc-linux-gnu-gcc -O testcase.c during RTL pass: combine testcase.c: In function 'foo': testcase.c:16:1: internal compiler error: in simplify_subreg, at simplify-rtx.cc:7400 16 | } | ^ 0x79d82a simplify_context::simplify_subreg(machine_mode, rtx_def*, machine_mode, poly_int<1u, unsigned long>) /repo/gcc-trunk/gcc/simplify-rtx.cc:7400 0x13a9438 simplify_context::simplify_gen_subreg(machine_mode, rtx_def*, machine_mode, poly_int<1u, unsigned long>) /repo/gcc-trunk/gcc/simplify-rtx.cc:7694 0x13a9438 simplify_context::simplify_gen_subreg(machine_mode, rtx_def*, machine_mode, poly_int<1u, unsigned long>) /repo/gcc-trunk/gcc/simplify-rtx.cc:7694 0x23c8a32 simplify_gen_subreg(machine_mode, rtx_def*, machine_mode, poly_int<1u, unsigned long>) /repo/gcc-trunk/gcc/rtl.h:3535 0x23c8a32 if_then_else_cond /repo/gcc-trunk/gcc/combine.cc:9375 0x23c8535 if_then_else_cond /repo/gcc-trunk/gcc/combine.cc:9240 0x23ddd0c combine_simplify_rtx /repo/gcc-trunk/gcc/combine.cc:5723 0x23e01eb subst /repo/gcc-trunk/gcc/combine.cc:5605 0x23e00e8 subst /repo/gcc-trunk/gcc/combine.cc:5532 0x23e3831 try_combine /repo/gcc-trunk/gcc/combine.cc:3336 0x23ebca0 combine_instructions /repo/gcc-trunk/gcc/combine.cc:1287 0x23ebca0 rest_of_handle_combine /repo/gcc-trunk/gcc/combine.cc:14978 0x23ebca0 execute /repo/gcc-trunk/gcc/combine.cc:15023 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/108805] [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above 2023-02-15 14:37 [Bug target/108805] New: [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above zsojka at seznam dot cz @ 2023-02-15 19:37 ` ubizjak at gmail dot com 2023-02-16 7:40 ` ubizjak at gmail dot com ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: ubizjak at gmail dot com @ 2023-02-15 19:37 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108805 Uroš Bizjak <ubizjak at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |13.0 Status|UNCONFIRMED |NEW Last reconfirmed| |2023-02-15 Component|target |rtl-optimization Ever confirmed|0 |1 --- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> --- Confirmed, combine chokes itself with the RTX it cannot chew: (gdb) bt #0 internal_error (gmsgid=gmsgid@entry=0x2614840 "in %s, at %s:%d") at ../../git/gcc/gcc/diagnostic.cc:2138 #1 0x0000000000891812 in fancy_abort (file=file@entry=0x20b75d8 "../../git/gcc/gcc/simplify-rtx.cc", line=line@entry=7400, function=function@entry=0x20b74e8 "simplify_subreg") at ../../git/gcc/gcc/diagnostic.cc:2242 #2 0x00000000007653cb in simplify_context::simplify_subreg (this=0x7fffffffd2a8, outermode=<optimized out>, op=<optimized out>, innermode=<optimized out>, byte=...) at ../../git/gcc/gcc/simplify-rtx.cc:7400 #3 0x0000000000ecfee9 in simplify_context::simplify_gen_subreg (this=<optimized out>, outermode=E_V4QImode, op=0x7fffea209480, innermode=E_VOIDmode, byte=...) at ../../git/gcc/gcc/simplify-rtx.cc:7694 #4 0x0000000000ecfee9 in simplify_context::simplify_gen_subreg (this=this@entry=0x7fffffffd2a8, outermode=outermode@entry=E_V4QImode, op=0x7fffea3e4b58, innermode=E_DImode, byte=...) at ../../git/gcc/gcc/simplify-rtx.cc:7694 #5 0x0000000001c92bde in simplify_gen_subreg (byte=..., innermode=<optimized out>, op=<optimized out>, outermode=E_V4QImode) at ../../git/gcc/gcc/rtl.h:3408 #6 if_then_else_cond (x=x@entry=0x7fffea3e4558, ptrue=ptrue@entry=0x7fffffffd328, pfalse=pfalse@entry=0x7fffffffd338) at ../../git/gcc/gcc/combine.cc:9375 #7 0x0000000001c929b1 in if_then_else_cond (x=x@entry=0x7fffea3e42b8, ptrue=ptrue@entry=0x7fffffffd400, pfalse=pfalse@entry=0x7fffffffd408) at ../../git/gcc/gcc/combine.cc:9240 #8 0x0000000001c9de0a in combine_simplify_rtx (x=0x7fffea3e42b8, op0_mode=E_V4QImode, in_dest=0, in_cond=0) at ../../git/gcc/gcc/combine.cc:5723 (gdb) f 3 #3 0x0000000000ecfee9 in simplify_context::simplify_gen_subreg (this=<optimized out>, outermode=E_V4QImode, op=0x7fffea209480, innermode=E_VOIDmode, byte=...) at ../../git/gcc/gcc/simplify-rtx.cc:7694 7694 newx = simplify_subreg (outermode, op, innermode, byte); (gdb) p debug_rtx (op) (const_int -1 [0xffffffffffffffff]) ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/108805] [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above 2023-02-15 14:37 [Bug target/108805] New: [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above zsojka at seznam dot cz 2023-02-15 19:37 ` [Bug rtl-optimization/108805] " ubizjak at gmail dot com @ 2023-02-16 7:40 ` ubizjak at gmail dot com 2023-02-17 15:04 ` cvs-commit at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: ubizjak at gmail dot com @ 2023-02-16 7:40 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108805 Uroš Bizjak <ubizjak at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com Status|NEW |ASSIGNED --- Comment #2 from Uroš Bizjak <ubizjak at gmail dot com> --- Patch in testing: --cut here-- diff --git a/gcc/simplify-rtx.cc b/gcc/simplify-rtx.cc index 0a1dd88b0a8..281bc418df0 100644 --- a/gcc/simplify-rtx.cc +++ b/gcc/simplify-rtx.cc @@ -7664,7 +7664,7 @@ simplify_context::simplify_subreg (machine_mode outermode, rtx op, 0).exists (&int_outermode)) { rtx tem = simplify_subreg (int_outermode, op, innermode, byte); - if (tem) + if (tem && GET_MODE (tem) != VOIDmode) return simplify_gen_subreg (outermode, tem, GET_MODE (tem), 0); } --cut here-- ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/108805] [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above 2023-02-15 14:37 [Bug target/108805] New: [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above zsojka at seznam dot cz 2023-02-15 19:37 ` [Bug rtl-optimization/108805] " ubizjak at gmail dot com 2023-02-16 7:40 ` ubizjak at gmail dot com @ 2023-02-17 15:04 ` cvs-commit at gcc dot gnu.org 2023-02-17 15:20 ` ubizjak at gmail dot com 2023-02-17 15:21 ` ubizjak at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2023-02-17 15:04 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108805 --- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Uros Bizjak <uros@gcc.gnu.org>: https://gcc.gnu.org/g:6ac3ebed5ffbac0d81c5a1d0cb1e345cfad202a8 commit r13-6117-g6ac3ebed5ffbac0d81c5a1d0cb1e345cfad202a8 Author: Uros Bizjak <ubizjak@gmail.com> Date: Fri Feb 17 15:58:12 2023 +0100 simplify-rtx: Fix VOIDmode operand handling in simplify_subreg [PR108805] simplify_subreg can return VOIDmode const_int operand and will cause ICE in simplify_gen_subreg when this operand is passed to it. The patch uses int_outermode instead of GET_MODE of temporary as the innermode argument of simplify_gen_subreg. 2023-02-17 Uroš Bizjak <ubizjak@gmail.com> gcc/ChangeLog: PR target/108805 * simplify-rtx.cc (simplify_context::simplify_subreg): Use int_outermode instead of GET_MODE (tem) to prevent VOIDmode from entering simplify_gen_subreg. gcc/testsuite/ChangeLog: PR target/108805 * gcc.dg/pr108805.c: New test. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/108805] [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above 2023-02-15 14:37 [Bug target/108805] New: [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above zsojka at seznam dot cz ` (2 preceding siblings ...) 2023-02-17 15:04 ` cvs-commit at gcc dot gnu.org @ 2023-02-17 15:20 ` ubizjak at gmail dot com 2023-02-17 15:21 ` ubizjak at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: ubizjak at gmail dot com @ 2023-02-17 15:20 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108805 Uroš Bizjak <ubizjak at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |avieira at gcc dot gnu.org --- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> --- Caused by g:d45ec8a732f4 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug rtl-optimization/108805] [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above 2023-02-15 14:37 [Bug target/108805] New: [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above zsojka at seznam dot cz ` (3 preceding siblings ...) 2023-02-17 15:20 ` ubizjak at gmail dot com @ 2023-02-17 15:21 ` ubizjak at gmail dot com 4 siblings, 0 replies; 6+ messages in thread From: ubizjak at gmail dot com @ 2023-02-17 15:21 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108805 Uroš Bizjak <ubizjak at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED --- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> --- Fixed. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2023-02-17 15:21 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2023-02-15 14:37 [Bug target/108805] New: [13 Regression] ICE: in simplify_subreg, at simplify-rtx.cc:7400 at -O and above zsojka at seznam dot cz 2023-02-15 19:37 ` [Bug rtl-optimization/108805] " ubizjak at gmail dot com 2023-02-16 7:40 ` ubizjak at gmail dot com 2023-02-17 15:04 ` cvs-commit at gcc dot gnu.org 2023-02-17 15:20 ` ubizjak at gmail dot com 2023-02-17 15:21 ` ubizjak at gmail dot com
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