From accc5ba53e0d0c660aa69f16ef32fc05e4439f1f Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Sat, 30 Jan 2021 14:58:14 +0100 Subject: [PATCH] i386, df: Fix up gcc.c-torture/compile/20051216-1.c -O1 -march=cascadelake > rtl-optimization/98863 - tame i386 specific RPAD pass > > caused > > FAIL: gcc.c-torture/compile/20051216-1.c -O1 (internal compiler error) > FAIL: gcc.c-torture/compile/20051216-1.c -O1 (test for excess errors) The problem is that we don't revert the df flags back. This patch fixes it by clearing DF_DEFER_INSN_RESCAN after calling df_process_deferred_rescans, so that it doesn't leak into following unprepared passes that expect non-deferred rescans. 2021-01-30 Jakub Jelinek * config/i386/i386-features.c (remove_partial_avx_dependency): Clear DF_DEFER_INSN_RESCAN after calling df_process_deferred_rescans. * gcc.target/i386/20051216-1.c: New test. --- gcc/config/i386/i386-features.c | 1 + gcc/testsuite/gcc.target/i386/20051216-1.c | 5 +++++ 2 files changed, 6 insertions(+) create mode 100644 gcc/testsuite/gcc.target/i386/20051216-1.c diff --git a/gcc/config/i386/i386-features.c b/gcc/config/i386/i386-features.c index c845ba9..c7d6482 100644 --- a/gcc/config/i386/i386-features.c +++ b/gcc/config/i386/i386-features.c @@ -2409,6 +2409,7 @@ remove_partial_avx_dependency (void) } df_process_deferred_rescans (); + df_clear_flags (DF_DEFER_INSN_RESCAN); bitmap_obstack_release (NULL); BITMAP_FREE (convert_bbs); diff --git a/gcc/testsuite/gcc.target/i386/20051216-1.c b/gcc/testsuite/gcc.target/i386/20051216-1.c new file mode 100644 index 0000000..42a31d0 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/20051216-1.c @@ -0,0 +1,5 @@ +/* PR rtl-optimization/25432 */ +/* { dg-do compile } */ +/* { dg-options "-O1 -march=cascadelake" } */ + +#include "../../gcc.c-torture/compile/20051216-1.c" -- 2.7.4