Thanks for reporting it.
Could you try this and verify for me?
- rtx src_op_0 = XEXP (src, 0);
-
- if (GET_CODE (src) == CONST && GET_CODE (src_op_0) == PLUS
- && CONST_POLY_INT_P (XEXP (src_op_0, 1)))
+ if (GET_CODE (src) == CONST && GET_CODE (XEXP (src, 0)) == PLUS
+ && CONST_POLY_INT_P (XEXP (XEXP (src, 0), 1)))
{
rtx dest_tmp = gen_reg_rtx (mode);
rtx tmp = gen_reg_rtx (mode);
- riscv_emit_move (dest, XEXP (src_op_0, 0));
- riscv_legitimize_poly_move (mode, dest_tmp, tmp, XEXP (src_op_0, 1));
+ riscv_emit_move (dest, XEXP (XEXP (src, 0), 0));
+ riscv_legitimize_poly_move (mode, dest_tmp, tmp, XEXP (XEXP (src, 0),
1));
If it can fix your issue, plz send a patch and commit it.
Thanks.
[email protected]
From: Patrick O'Neill
Date: 2023-09-19 01:38
To: Li, Pan2; Kito Cheng
CC: [email protected]; Wang, Yanzhang; [email protected]; Palmer
Dabbelt
Subject: Re: [PATCH v1] RISC-V: Fix one ICE for vect test vect-multitypes-5
Hi,
After this patch, there is now an ICE when bootstrapping with
--enable-checking=rtl on rv32gc.
More details:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111461
Thanks,
Patrick
On 8/29/23 07:40, Li, Pan2 via Gcc-patches wrote:
> Committed, thanks Kito.
>
> Pan
>
> -----Original Message-----
> From: Kito Cheng <[email protected]>
> Sent: Tuesday, August 29, 2023 9:46 PM
> To: Li, Pan2 <[email protected]>
> Cc: [email protected]; Wang, Yanzhang <[email protected]>;
> [email protected]
> Subject: Re: [PATCH v1] RISC-V: Fix one ICE for vect test vect-multitypes-5
>
> LGTM, thanks :)
>
> On Tue, Aug 29, 2023 at 6:50 PM Pan Li via Gcc-patches
> <[email protected]> wrote:
>> From: Pan Li <[email protected]>
>>
>> There will be one ICE when build vect-multitypes-5.c similar as below:
>>
>> riscv64-unknown-elf-gcc -O3 \
>> -march=rv64imafdcv -mabi=lp64d -mcmodel=medlow \
>> -fdiagnostics-plain-output -flto -ffat-lto-objects \
>> --param riscv-autovec-preference=scalable -Wno-psabi \
>> -ftree-vectorize -fno-tree-loop-distribute-patterns \
>> -fno-vect-cost-model -fno-common -O2 -fdump-tree-vect-details \
>> gcc/testsuite/gcc.dg/vect/vect-multitypes-5.c -o test.elf -lm
>>
>> The below RTL is not well handled in riscv_legitimize_const_move, and
>> then fall through to the default pass. Then the
>> default force_const_mem will NULL_RTX, and will have ICE when operating
>> one the NULL_RTX.
>>
>> (const:DI
>> (plus:DI
>> (symbol_ref:DI ("ic") [flags 0x2] <var_decl 0x7fe57740be10 ic>)
>> (const_poly_int:DI [16, 16])))
>>
>> This patch would like to take care of this rtl in
>> riscv_legitimize_const_move.
>>
>> Signed-off-by: Pan Li <[email protected]>
>> Co-Authored-By: Ju-Zhe Zhong <[email protected]>
>>
>> gcc/ChangeLog:
>>
>> * config/riscv/riscv.cc (riscv_legitimize_poly_move): New
>> declaration.
>> (riscv_legitimize_const_move): Handle ref plus const poly.
>> ---
>> gcc/config/riscv/riscv.cc | 23 +++++++++++++++++++++++
>> 1 file changed, 23 insertions(+)
>>
>> diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
>> index 1d6e278ea90..bab6ed70b2d 100644
>> --- a/gcc/config/riscv/riscv.cc
>> +++ b/gcc/config/riscv/riscv.cc
>> @@ -366,6 +366,7 @@ static const struct riscv_tune_param
>> optimize_size_tune_info = {
>>
>> static tree riscv_handle_fndecl_attribute (tree *, tree, tree, int, bool
>> *);
>> static tree riscv_handle_type_attribute (tree *, tree, tree, int, bool *);
>> +static void riscv_legitimize_poly_move (machine_mode, rtx, rtx, rtx);
>>
>> /* Defining target-specific uses of __attribute__. */
>> static const struct attribute_spec riscv_attribute_table[] =
>> @@ -2118,6 +2119,28 @@ riscv_legitimize_const_move (machine_mode mode, rtx
>> dest, rtx src)
>> return;
>> }
>>
>> + /* Handle below format.
>> + (const:DI
>> + (plus:DI
>> + (symbol_ref:DI ("ic") [flags 0x2] <var_decl 0x7fe57740be10 ic>) <-
>> op_0
>> + (const_poly_int:DI [16, 16]) // <- op_1
>> + ))
>> + */
>> + rtx src_op_0 = XEXP (src, 0);
>> +
>> + if (GET_CODE (src) == CONST && GET_CODE (src_op_0) == PLUS
>> + && CONST_POLY_INT_P (XEXP (src_op_0, 1)))
>> + {
>> + rtx dest_tmp = gen_reg_rtx (mode);
>> + rtx tmp = gen_reg_rtx (mode);
>> +
>> + riscv_emit_move (dest, XEXP (src_op_0, 0));
>> + riscv_legitimize_poly_move (mode, dest_tmp, tmp, XEXP (src_op_0, 1));
>> +
>> + emit_insn (gen_rtx_SET (dest, gen_rtx_PLUS (mode, dest, dest_tmp)));
>> + return;
>> + }
>> +
>> src = force_const_mem (mode, src);
>>
>> /* When using explicit relocs, constant pool references are sometimes
>> --
>> 2.34.1
>>
