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* [Bug target/113645] New: [amdgcn][gfx1030][gfx1100] ICE in RTL pass: vregs with -O3: unrecognizable insn (vector reductions)
@ 2024-01-28 19:00 burnus at gcc dot gnu.org
2024-01-28 19:06 ` [Bug target/113645] " pinskia at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: burnus at gcc dot gnu.org @ 2024-01-28 19:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113645
Bug ID: 113645
Summary: [amdgcn][gfx1030][gfx1100] ICE in RTL pass: vregs with
-O3: unrecognizable insn (vector reductions)
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: ams at gcc dot gnu.org
Target Milestone: ---
Target: amdgcn-amdhsa
Created attachment 57247
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57247&action=edit
Testcase, compile with gcc -fopenmp -O3 -foffload-options=-march=gfx1030 or
gfx1100
Found for BabelStream when compiling with AMD GPU offloading for gfx1030 or
gfx1100 and using -O3.
# git clone https://github.com/UoB-HPC/BabelStream
# cd BabelStream; mkdir build; cd build
# cmake .. -DMODEL=omp
-DCMAKE_CXX_COMPILER=$HOME/projects/gcc-trunk-offload/bin/g++ -DOFFLOAD=ON
-DCXX_EXTRA_FLAGS=-foffload=amdgcn-amdhsa=-march=gfx1100 -fopenmp
# make
* * *
Simplified testcase attached, compile with:
gcc -fopenmp -foffload=amdgcn-amdhsa \
-foffload-options=amdgcn-amdhsa=-march=gfx1030 -O3
or, likewise, gfx1100.
* * *
foo.c:5:9: error: unrecognizable insn:
5 | #pragma omp target teams distribute parallel for simd map(tofrom:
sum) reduction(+:sum)
| ^
(insn 144 143 145 10 (set (reg:V16SF 926)
(unspec:V16SF [
(reg:V16SF 922) repeated x2
(const_int 1 [0x1])
] UNSPEC_PLUS_DPP_SHR)) "foo.c":5:9 -1
(nil))
during RTL pass: vregs
foo.c:5:9: internal compiler error: in extract_insn, at recog.cc:2812
0x7f6b21 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/tob/repos/gcc/gcc/rtl-error.cc:108
0x7f6b3d _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/tob/repos/gcc/gcc/rtl-error.cc:116
0x7f55e4 extract_insn(rtx_insn*)
/home/tob/repos/gcc/gcc/recog.cc:2812
0xb6b860 instantiate_virtual_regs_in_insn
/home/tob/repos/gcc/gcc/function.cc:1611
0xb6b860 instantiate_virtual_regs
/home/tob/repos/gcc/gcc/function.cc:1994
0xb6b860 execute
/home/tob/repos/gcc/gcc/function.cc:2041
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug target/113645] [amdgcn][gfx1030][gfx1100] ICE in RTL pass: vregs with -O3: unrecognizable insn (vector reductions)
2024-01-28 19:00 [Bug target/113645] New: [amdgcn][gfx1030][gfx1100] ICE in RTL pass: vregs with -O3: unrecognizable insn (vector reductions) burnus at gcc dot gnu.org
@ 2024-01-28 19:06 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: pinskia at gcc dot gnu.org @ 2024-01-28 19:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113645
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |DUPLICATE
Status|UNCONFIRMED |RESOLVED
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 113615 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2024-01-28 19:00 [Bug target/113645] New: [amdgcn][gfx1030][gfx1100] ICE in RTL pass: vregs with -O3: unrecognizable insn (vector reductions) burnus at gcc dot gnu.org
2024-01-28 19:06 ` [Bug target/113645] " pinskia at gcc dot gnu.org
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