https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106058
Bug ID: 106058
Summary: -fcompare-debug failure with -O -fno-dce -fno-tree-dce
-fno-cprop-registers on powerpc64le-unknown-linux-gnu
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Keywords: compare-debug-failure
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: powerpc64le-unknown-linux-gnu
Created attachment 53192
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53192&action=edit
reduced testcase
Compiler output:
$ powerpc64le-unknown-linux-gnu-gcc -O -fno-dce -fno-tree-dce
-fno-cprop-registers -fcompare-debug testcase.c
powerpc64le-unknown-linux-gnu-gcc: error: testcase.c: '-fcompare-debug' failure
$ diff -u *gkd
--- a-testcase.c.gkd 2022-06-22 20:27:59.271068364 +0200
+++ a-testcase.gk.c.gkd 2022-06-22 20:27:59.314401459 +0200
@@ -34,9 +34,9 @@
(expr_list:REG_UNUSED (reg:DI 11 11 [+8 ])
(nil)))
(note # 0 0 NOTE_INSN_DELETED)
-(insn # 0 0 (set (reg:DI 10 10 [131])
+(insn # 0 0 (set (reg:DI 11 11 [+8 ])
(zero_extend:DI (reg:HI 9 9 [orig:119 v.1_3 ] [119])))
"testcase.c":10:9# {zero_extendhidi2}
- (expr_list:REG_UNUSED (reg:DI 10 10 [131])
+ (expr_list:REG_UNUSED (reg:DI 11 11 [+8 ])
(nil)))
(insn # 0 0 (set (reg/f:DI 10 10 [128])
(high:DI (unspec:DI [
$ powerpc64le-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-powerpc64le/bin/powerpc64le-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-r13-1203-20220622112715-g038b077689b-checking-yes-rtl-df-extra-powerpc64le/bin/../libexec/gcc/powerpc64le-unknown-linux-gnu/13.0.0/lto-wrapper
Target: powerpc64le-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl
--with-sysroot=/usr/powerpc64le-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=powerpc64le-unknown-linux-gnu
--with-ld=/usr/bin/powerpc64le-unknown-linux-gnu-ld
--with-as=/usr/bin/powerpc64le-unknown-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r13-1203-20220622112715-g038b077689b-checking-yes-rtl-df-extra-powerpc64le
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 13.0.0 20220622 (experimental) (GCC)
