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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/94605] New: [8/9/10 Regression] ICE in early-remat.c:process_block with multi-output asms
Date: Wed, 15 Apr 2020 10:32:43 +0000	[thread overview]
Message-ID: <bug-94605-4@http.gcc.gnu.org/bugzilla/> (raw)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94605

            Bug ID: 94605
           Summary: [8/9/10 Regression] ICE in early-remat.c:process_block
                    with multi-output asms
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rsandifo at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64*-*-*

Compiling the following testcase with -O2 -march=armv8.2-a+sve:

typedef int v8si __attribute__((vector_size(32)));
int g (v8si, v8si);

void
f (void)
{
  v8si x = {}, y = {};
  while (g (x, y))
    asm ("" : "+w" (x), "+w" (y));
}

triggers:

internal compiler error: in process_block, at early-remat.c:2051

This is because process_block doesn't handle insns that set
multiple candidate registers.

             reply	other threads:[~2020-04-15 10:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-15 10:32 rsandifo at gcc dot gnu.org [this message]
2020-04-15 10:33 ` [Bug rtl-optimization/94605] " rsandifo at gcc dot gnu.org
2020-04-16 12:06 ` cvs-commit at gcc dot gnu.org
2020-08-07  9:40 ` [Bug rtl-optimization/94605] [8/9 " cvs-commit at gcc dot gnu.org
2021-04-26  8:37 ` [Bug rtl-optimization/94605] [8 " cvs-commit at gcc dot gnu.org
2021-04-26  8:37 ` rsandifo at gcc dot gnu.org

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