https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112368
Bug ID: 112368
Summary: Darwin failures for avx256_move_by_pieces and
avx256_store_by_pieces
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: fxcoudert at gcc dot gnu.org
Target Milestone: ---
Seeing many failures on x86_64-apple-darwin21 related to
TARGET_AVX256_MOVE_BY_PIECES:
FAIL: g++.target/i386/pr80566-2.C -std=gnu++98 scan-assembler-times vmovdqu[
\\\\t]+[^\\n]*%ymm 4
FAIL: g++.target/i386/pr80566-2.C -std=gnu++14 scan-assembler-times vmovdqu[
\\\\t]+[^\\n]*%ymm 4
FAIL: g++.target/i386/pr80566-2.C -std=gnu++17 scan-assembler-times vmovdqu[
\\\\t]+[^\\n]*%ymm 4
FAIL: g++.target/i386/pr80566-2.C -std=gnu++20 scan-assembler-times vmovdqu[
\\\\t]+[^\\n]*%ymm 4
FAIL: gcc.target/i386/eh_return-1.c scan-assembler-times vmovdqu[
\\\\t]+[^\\n]*%ymm 4
FAIL: gcc.target/i386/pieces-memcpy-12.c scan-assembler-times vmovdqu[
\\\\t]+[^\\n]*%ymm 4
FAIL: gcc.target/i386/pieces-memcpy-13.c scan-assembler-times vmovdqu64[
\\\\t]+[^\\n]*%zmm 2
FAIL: gcc.target/i386/pieces-memcpy-15.c scan-assembler-times vmovdqu[
\\\\t]+[^\\n]*%ymm 2
FAIL: gcc.target/i386/pieces-memcpy-16.c scan-assembler-times vmovdqu[
\\\\t]+[^\\n]*%ymm 2
FAIL: gcc.target/i386/pieces-memcpy-17.c scan-assembler-times vmovdqu64[
\\\\t]+[^\\n]*%zmm 2
FAIL: gcc.target/i386/pieces-memcpy-18.c scan-assembler-times vmovdqu64[
\\\\t]+[^\\n]*%zmm 2
FAIL: gcc.target/i386/pieces-memcpy-20.c scan-assembler-times vmovdqu(?:64|)[
\\\\t]+[^\\n]*%ymm 4
FAIL: gcc.target/i386/pieces-memcpy-21.c scan-assembler-times vmovdqu(?:64|)[
\\\\t]+[^\\n]*%ymm 4
FAIL: gcc.target/i386/pr90773-26.c scan-assembler-times vmovdqu[\\\\t
]%ymm[0-9]+, \\\\(%[^,]+\\\\) 1
FAIL: gcc.target/i386/pr90773-26.c scan-assembler-times vmovdqu[\\\\t
]%ymm[0-9]+, 32\\\\(%[^,]+\\\\) 1
They were not present on 20230909
(https://gcc.gnu.org/pipermail/gcc-testresults/2023-September/795615.html) and
first appeared on test results in 20231023
(https://gcc.gnu.org/pipermail/gcc-testresults/2023-October/799220.html).
Taking the example of gcc.target/i386/pieces-memcpy-12.c, the asm generated is:
%%%%%%%%
.build_version macos, 12, 0
.text
.p2align 4
.globl _foo
_foo:
LFB0:
movq _src@GOTPCREL(%rip), %rdx
movq _dst@GOTPCREL(%rip), %rax
movq (%rdx), %rdx
movq (%rax), %rax
vmovdqu (%rdx), %xmm0
vmovdqu %xmm0, (%rax)
vmovdqu 16(%rdx), %xmm1
vmovdqu %xmm1, 16(%rax)
vmovdqu 32(%rdx), %xmm2
vmovdqu %xmm2, 32(%rax)
vmovdqu 48(%rdx), %xmm3
vmovdqu %xmm3, 48(%rax)
ret
LFE0:
.section
__TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support
EH_frame1:
.set L$set$0,LECIE1-LSCIE1
.long L$set$0
LSCIE1:
.long 0
.byte 0x3
.ascii "zR\0"
.uleb128 0x1
.sleb128 -8
.uleb128 0x10
.uleb128 0x1
.byte 0x10
.byte 0xc
.uleb128 0x7
.uleb128 0x8
.byte 0x90
.uleb128 0x1
.align 3
LECIE1:
LSFDE1:
.set L$set$1,LEFDE1-LASFDE1
.long L$set$1
LASFDE1:
.long LASFDE1-EH_frame1
.quad LFB0-.
.set L$set$2,LFE0-LFB0
.quad L$set$2
.uleb128 0
.align 3
LEFDE1:
.subsections_via_symbols
%%%%%%%%
