https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112606
Bug ID: 112606
Summary: [14 Regression] powerpc64le-linux-gnu: 'FAIL:
gcc.target/powerpc/p8vector-fp.c scan-assembler
xsnabsdp'
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: testsuite-fail
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: tschwinge at gcc dot gnu.org
CC: pinskia at gcc dot gnu.org, xry111 at gcc dot gnu.org
Target Milestone: ---
Target: powerpc64le-linux-gnu
If my tracking is to be believed, the recent commit
r14-5542-g9e9279fadbd1c673c875b9d20261d2de0473f63f "Only allow (copysign x,
NEG_CONST) -> (fneg (fabs x)) simplification for constant folding [PR112483]"
causes a regression for powerpc64le-linux-gnu:
@@ -169558,7 +169764,7 @@ PASS: gcc.target/powerpc/p8vector-fp.c
scan-assembler xsdivdp
PASS: gcc.target/powerpc/p8vector-fp.c scan-assembler xsdivsp
PASS: gcc.target/powerpc/p8vector-fp.c scan-assembler xsmuldp
PASS: gcc.target/powerpc/p8vector-fp.c scan-assembler xsmulsp
[-PASS:-]{+FAIL:+} gcc.target/powerpc/p8vector-fp.c scan-assembler xsnabsdp
PASS: gcc.target/powerpc/p8vector-fp.c scan-assembler xsnegdp
PASS: gcc.target/powerpc/p8vector-fp.c scan-assembler xssqrtdp
PASS: gcc.target/powerpc/p8vector-fp.c scan-assembler xssqrtsp
With that commit reverted (PASS) vs. non-reverted (FAIL):
--- p8vector-fp.s 2023-11-18 14:22:23.862421425 +0100
+++ p8vector-fp.s 2023-11-18 14:11:49.554421425 +0100
@@ -33,13 +33,15 @@
0: addis 2,12,.TOC.-.LCF1@ha
addi 2,2,.TOC.-.LCF1@l
.localentry nabs_sf,.-nabs_sf
+ addis 9,2,.LC0@toc@ha
lxsspx 32,0,3
#APP
# 16 "[...]/source-gcc/gcc/testsuite/gcc.target/powerpc/p8vector-fp.c" 1
# reg 32
# 0 "" 2
#NO_APP
- xsnabsdp 1,32
+ lfs 1,.LC0@toc@l(9)
+ xscpsgndp 1,1,32
blr
.long 0
.byte 0,0,0,0,0,0,0,0
@@ -201,13 +203,15 @@
0: addis 2,12,.TOC.-.LCF9@ha
addi 2,2,.TOC.-.LCF9@l
.localentry nabs_df,.-nabs_df
+ addis 9,2,.LC2@toc@ha
lxsdx 32,0,3
#APP
# 77 "[...]/source-gcc/gcc/testsuite/gcc.target/powerpc/p8vector-fp.c" 1
# reg 32
# 0 "" 2
#NO_APP
- xsnabsdp 1,32
+ lfd 1,.LC2@toc@l(9)
+ xscpsgndp 1,1,32
blr
.long 0
.byte 0,0,0,0,0,0,0,0
@@ -338,5 +342,14 @@
.cfi_endproc
.LFE15:
.size sqrt_df,.-sqrt_df
+ .section .rodata.cst4,"aM",@progbits,4
+ .align 2
+.LC0:
+ .long -1082130432
+ .section .rodata.cst8,"aM",@progbits,8
+ .align 3
+.LC2:
+ .long 0
+ .long -1074790400
.gnu_attribute 4, 1
.section .note.GNU-stack,"",@progbits
