I'll let it run overnight and see if this helps. Even before this patch,
I was seeing 233 stubs related failures for rv32gcv and 7 for rv64gcv so
this won't fix all the issues.

It's easily replicated using upstream riscv-gnu-toolchain
git clone https://github.com/riscv-collab/riscv-gnu-toolchain
cd riscv-gnu-toolchain
git submodule update --init gcc
cd gcc
git pull master
cd ..
mkdir build
cd build
../configure --prefix=$(pwd) --with-arch=rv32gcv --with-abi=ilp32d
make report-linux -j32

Then search for "stubs" in the debug logs (/build-gcc-linux-stage2/gcc/testsuite/*.log)

Patrick

On 9/19/23 17:54, juzhe.zh...@rivai.ai wrote:
I think we could remove match.h.

Hi, @Patrick. Could you verify it?

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h
index 2292372d7a3..674098e9ba6 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h
@@ -1,5 +1,4 @@
 #include <stdint-gcc.h>
-#include <math.h>

and commit it.

Thanks.
------------------------------------------------------------------------
juzhe.zh...@rivai.ai

    *From:* Kito Cheng <mailto:kito.ch...@gmail.com>
    *Date:* 2023-09-20 08:52
    *To:* 钟居哲 <mailto:juzhe.zh...@rivai.ai>
    *CC:* Patrick O'Neill <mailto:patr...@rivosinc.com>; Robin Dapp
    <mailto:rdapp....@gmail.com>; gcc-patches
    <mailto:gcc-patches@gcc.gnu.org>; Kito.cheng
    <mailto:kito.ch...@sifive.com>; jeffreyalaw
    <mailto:jeffreya...@gmail.com>; palmer
    <mailto:pal...@rivosinc.com>; Edwin Lu <mailto:e...@rivosinc.com>;
    joern.rennecke <mailto:joern.renne...@embecosm.com>;
    jeremy.bennett <mailto:jeremy.benn...@embecosm.com>; gnu-toolchain
    <mailto:gnu-toolch...@rivosinc.com>
    *Subject:* Re: Re: [Committed] RISC-V: Support VLS unary
    floating-point patterns
    It seems because math.h, similar issue as stdint.h, does math.h
    necessary for the test case?

    juzhe.zh...@rivai.ai <juzhe.zh...@rivai.ai> 於 2023年9月20日 週三
    08:44 寫道:

        I didn't see this issue.
        They should be the bogus FAILs.
        We should either fix testcases or ignore them.

        ------------------------------------------------------------------------
        juzhe.zh...@rivai.ai

            *From:* Patrick O'Neill <mailto:patr...@rivosinc.com>
            *Date:* 2023-09-20 08:34
            *To:* Juzhe-Zhong <mailto:juzhe.zh...@rivai.ai>; Robin
            Dapp <mailto:rdapp....@gmail.com>; gcc-patches
            <mailto:gcc-patches@gcc.gnu.org>
            *CC:* kito.cheng <mailto:kito.ch...@gmail.com>; kito.cheng
            <mailto:kito.ch...@sifive.com>; jeffreyalaw
            <mailto:jeffreya...@gmail.com>; Palmer Dabbelt
            <mailto:pal...@rivosinc.com>; Edwin Lu
            <mailto:e...@rivosinc.com>; joern.rennecke
            <mailto:joern.renne...@embecosm.com>; jeremy.bennett
            <mailto:jeremy.benn...@embecosm.com>; gnu-toolchain
            <mailto:gnu-toolch...@rivosinc.com>
            *Subject:* Re: [Committed] RISC-V: Support VLS unary
            floating-point patterns
            Hi,
            This patch highlights an issue Edwin and I have been
            having with the
            testsuite where rv64 testcases are run when testing rv32gcv.
            There's a large number of new failures in the rv32gcv
            testsuite from
            this seemingly innocuous patch.
            https://github.com/ewlu/riscv-gnu-toolchain/issues/166
            (The repo is still a WIP - eventually will be non-gating
            patchworks
            pre-commit CI)
            From Edwin and my investigation the failures for rv32gcv
            look like [1].
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/sysroot/usr/include/gnu/stubs.h:17:11:

            fatal error: gnu/stubs-lp64d.h: No such file or directory
            compilation terminated.
            Top of the failing testcase:
            /* { dg-do compile } */
            /* { dg-options "-march=rv64gcv_zvfh_zvl4096b -mabi=lp64d -O3
            -fno-schedule-insns -fno-schedule-insns2
            --param=riscv-autovec-lmul=m8" } */
            #include "def.h"
            The dg-options explicitly set rv64gcv, so I don't think
            this testcase
            should even be executed.
            For the 3 new failures on rv64gcv, they all explicitly set
            rv32gcv.
            /* { dg-options "-march=rv32gcv -mabi=ilp32d -O3" } */
            These are seen on non-multilib builds. Multilib rv32/64gc
            does not
            appear to have the same issue when compiling (we're
            currently testing
            multilib rv32/64gcv to see if they encounter issues when
            executing).
            Are other people seeing similar errors/is this a known issue?
            Patrick
            [1]:
            Executing on host:
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/build-gcc-linux-stage2/gcc/xgcc

            
-B/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/build-gcc-linux-stage2/gcc/

            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/gcc/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/floating-point-mul-3.c

            -march=rv32gcv -mabi=ilp32d -mcmodel=medlow
            -fdiagnostics-plain-output
            -O3 -ftree-vectorize --param
            riscv-autovec-preference=scalable
            -march=rv64gcv_zvfh_zvl4096b -mabi=lp64d -O3
            -fno-schedule-insns
            -fno-schedule-insns2 --param=riscv-autovec-lmul=m8
            -ffat-lto-objects
            -fno-ident -S   -o floating-point-mul-3.s (timeout = 600)
            spawn -ignore SIGHUP
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/build-gcc-linux-stage2/gcc/xgcc

            
-B/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/build-gcc-linux-stage2/gcc/

            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/gcc/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/floating-point-mul-3.c

            -march=rv32gcv -mabi=ilp32d -mcmodel=medlow
            -fdiagnostics-plain-output
            -O3 -ftree-vectorize --param
            riscv-autovec-preference=scalable
            -march=rv64gcv_zvfh_zvl4096b -mabi=lp64d -O3
            -fno-schedule-insns
            -fno-schedule-insns2 --param=riscv-autovec-lmul=m8
            -ffat-lto-objects
            -fno-ident -S -o floating-point-mul-3.s
            In file included from
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/sysroot/usr/include/features.h:515,
                             from
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/sysroot/usr/include/bits/libc-header-start.h:33,
                             from
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/sysroot/usr/include/math.h:27,
                             from
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/gcc/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h:2,
                             from
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/gcc/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/floating-point-mul-3.c:4:
            
/home/runner/work/riscv-gnu-toolchain/riscv-gnu-toolchain/build/sysroot/usr/include/gnu/stubs.h:17:11:

            fatal error: gnu/stubs-lp64d.h: No such file or directory
            compilation terminated.
            compiler exited with status 1
            FAIL:
            gcc.target/riscv/rvv/autovec/vls/floating-point-mul-3.c -O3
            -ftree-vectorize --param riscv-autovec-preference=scalable
            (test for
            excess errors)
            On 9/19/23 04:26, Juzhe-Zhong wrote:
            > Extend current VLA patterns with VLS modes.
            >
            > Regression all passed.
            >
            > gcc/ChangeLog:
            >
            > * config/riscv/autovec.md: Extend VLS modes.
            > * config/riscv/vector.md: Ditto.
            >
            > gcc/testsuite/ChangeLog:
            >
            > * gcc.target/riscv/rvv/autovec/vls/def.h: Add unary test.
            > * gcc.target/riscv/rvv/autovec/vls/neg-2.c: New test.
            >
            > ---
            > gcc/config/riscv/autovec.md                   | 12 ++---
            > gcc/config/riscv/vector.md                    | 20 +++----
            > .../gcc.target/riscv/rvv/autovec/vls/def.h    | 3 +-
            > .../gcc.target/riscv/rvv/autovec/vls/neg-2.c  | 52
            +++++++++++++++++++
            >   4 files changed, 70 insertions(+), 17 deletions(-)
            >   create mode 100644
            gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/neg-2.c
            >
            > diff --git a/gcc/config/riscv/autovec.md
            b/gcc/config/riscv/autovec.md
            > index 769ef6daa36..75ed7ae4f2e 100644
            > --- a/gcc/config/riscv/autovec.md
            > +++ b/gcc/config/riscv/autovec.md
            > @@ -1031,9 +1031,9 @@
            >   ;; - vfneg.v/vfabs.v
            >   ;;
            
-------------------------------------------------------------------------------
            >   (define_insn_and_split "<optab><mode>2"
            > -  [(set (match_operand:VF 0 "register_operand")
            > -    (any_float_unop_nofrm:VF
            > -     (match_operand:VF 1 "register_operand")))]
            > +  [(set (match_operand:V_VLSF 0 "register_operand")
            > +    (any_float_unop_nofrm:V_VLSF
            > +     (match_operand:V_VLSF 1 "register_operand")))]
            >     "TARGET_VECTOR && can_create_pseudo_p ()"
            >     "#"
            >     "&& 1"
            > @@ -1052,9 +1052,9 @@
            >   ;; - vfsqrt.v
            >   ;;
            
-------------------------------------------------------------------------------
            >   (define_insn_and_split "<optab><mode>2"
            > -  [(set (match_operand:VF 0 "register_operand")
            > -    (any_float_unop:VF
            > -     (match_operand:VF 1 "register_operand")))]
            > +  [(set (match_operand:V_VLSF 0 "register_operand")
            > +    (any_float_unop:V_VLSF
            > +     (match_operand:V_VLSF 1 "register_operand")))]
            >     "TARGET_VECTOR && can_create_pseudo_p ()"
            >     "#"
            >     "&& 1"
            > diff --git a/gcc/config/riscv/vector.md
            b/gcc/config/riscv/vector.md
            > index f7f37da692a..f66ffebba24 100644
            > --- a/gcc/config/riscv/vector.md
            > +++ b/gcc/config/riscv/vector.md
            > @@ -6756,8 +6756,8 @@
            >   ;;
            
-------------------------------------------------------------------------------
            >
            >   (define_insn "@pred_<optab><mode>"
            > -  [(set (match_operand:VF 0
            "register_operand"           "=vd, vd, vr, vr")
            > - (if_then_else:VF
            > +  [(set (match_operand:V_VLSF 0
            "register_operand"           "=vd, vd, vr, vr")
            > + (if_then_else:V_VLSF
            >     (unspec:<VM>
            >       [(match_operand:<VM> 1 "vector_mask_operand" " vm,
            vm,Wc1,Wc1")
            >        (match_operand 4 "vector_length_operand"    " rK,
            rK, rK, rK")
            > @@ -6768,9 +6768,9 @@
            >        (reg:SI VL_REGNUM)
            >        (reg:SI VTYPE_REGNUM)
            >        (reg:SI FRM_REGNUM)] UNSPEC_VPREDICATE)
            > -   (any_float_unop:VF
            > -     (match_operand:VF 3 "register_operand"       " vr,
            vr, vr, vr"))
            > -   (match_operand:VF 2 "vector_merge_operand"     "
            vu,  0, vu,  0")))]
            > +   (any_float_unop:V_VLSF
            > +     (match_operand:V_VLSF 3 "register_operand"       "
            vr, vr, vr, vr"))
            > +   (match_operand:V_VLSF 2 "vector_merge_operand"     "
            vu,  0, vu,  0")))]
            >     "TARGET_VECTOR"
            >     "vf<insn>.v\t%0,%3%p1"
            >     [(set_attr "type" "<float_insn_type>")
            > @@ -6783,8 +6783,8 @@
            >   (symbol_ref "riscv_vector::get_frm_mode (operands[8])"))])
            >
            >   (define_insn "@pred_<optab><mode>"
            > -  [(set (match_operand:VF 0
            "register_operand"           "=vd, vd, vr, vr")
            > - (if_then_else:VF
            > +  [(set (match_operand:V_VLSF 0
            "register_operand"           "=vd, vd, vr, vr")
            > + (if_then_else:V_VLSF
            >     (unspec:<VM>
            >       [(match_operand:<VM> 1 "vector_mask_operand" " vm,
            vm,Wc1,Wc1")
            >        (match_operand 4 "vector_length_operand"    " rK,
            rK, rK, rK")
            > @@ -6793,9 +6793,9 @@
            >        (match_operand 7 "const_int_operand"        " 
            i,  i,  i,  i")
            >        (reg:SI VL_REGNUM)
            >        (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE)
            > -   (any_float_unop_nofrm:VF
            > -     (match_operand:VF 3 "register_operand"       " vr,
            vr, vr, vr"))
            > -   (match_operand:VF 2 "vector_merge_operand"     "
            vu,  0, vu,  0")))]
            > +   (any_float_unop_nofrm:V_VLSF
            > +     (match_operand:V_VLSF 3 "register_operand"       "
            vr, vr, vr, vr"))
            > +   (match_operand:V_VLSF 2 "vector_merge_operand"     "
            vu,  0, vu,  0")))]
            >     "TARGET_VECTOR"
            >     "vf<insn>.v\t%0,%3%p1"
            >     [(set_attr "type" "<float_insn_type>")
            > diff --git
            a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h
            b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h
            > index 5df90704885..d7b721b4e3e 100644
            > --- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h
            > +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/def.h
            > @@ -1,4 +1,5 @@
            >   #include <stdint-gcc.h>
            > +#include <math.h>
            >
            >   typedef int8_t v1qi __attribute__ ((vector_size (1)));
            >   typedef int8_t v2qi __attribute__ ((vector_size (2)));
            > @@ -210,7 +211,7 @@ typedef double v512df __attribute__
            ((vector_size (4096)));
            >     PREFIX##_##TYPE##NUM (TYPE *restrict a, TYPE
            *restrict b)                    \
            > { \
            >       for (int i = 0; i < NUM; ++i) \
            > -      a[i] = OP b[i]; \
            > +      a[i] = OP (b[i]); \
            >     }
            >
            >   #define DEF_CALL_VV(PREFIX, NUM, TYPE,
            CALL)                                   \
            > diff --git
            a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/neg-2.c
            b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/neg-2.c
            > new file mode 100644
            > index 00000000000..c2ab0098afa
            > --- /dev/null
            > +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vls/neg-2.c
            > @@ -0,0 +1,52 @@
            > +/* { dg-do compile } */
            > +/* { dg-options "-march=rv64gcv_zvfh_zvl4096b
            -mabi=lp64d -O3 -fno-schedule-insns -fno-schedule-insns2
            --param=riscv-autovec-lmul=m8 -fdump-tree-optimized" } */
            > +
            > +#include "def.h"
            > +
            > +DEF_OP_V (neg, 2, _Float16, -)
            > +DEF_OP_V (neg, 4, _Float16, -)
            > +DEF_OP_V (neg, 8, _Float16, -)
            > +DEF_OP_V (neg, 16, _Float16, -)
            > +DEF_OP_V (neg, 32, _Float16, -)
            > +DEF_OP_V (neg, 64, _Float16, -)
            > +DEF_OP_V (neg, 128, _Float16, -)
            > +DEF_OP_V (neg, 256, _Float16, -)
            > +DEF_OP_V (neg, 512, _Float16, -)
            > +DEF_OP_V (neg, 1024, _Float16, -)
            > +DEF_OP_V (neg, 2048, _Float16, -)
            > +
            > +DEF_OP_V (neg, 2, float, -)
            > +DEF_OP_V (neg, 4, float, -)
            > +DEF_OP_V (neg, 8, float, -)
            > +DEF_OP_V (neg, 16, float, -)
            > +DEF_OP_V (neg, 32, float, -)
            > +DEF_OP_V (neg, 64, float, -)
            > +DEF_OP_V (neg, 128, float, -)
            > +DEF_OP_V (neg, 256, float, -)
            > +DEF_OP_V (neg, 512, float, -)
            > +DEF_OP_V (neg, 1024, float, -)
            > +
            > +DEF_OP_V (neg, 2, double, -)
            > +DEF_OP_V (neg, 4, double, -)
            > +DEF_OP_V (neg, 8, double, -)
            > +DEF_OP_V (neg, 16, double, -)
            > +DEF_OP_V (neg, 32, double, -)
            > +DEF_OP_V (neg, 64, double, -)
            > +DEF_OP_V (neg, 128, double, -)
            > +DEF_OP_V (neg, 256, double, -)
            > +DEF_OP_V (neg, 512, double, -)
            > +
            > +/* { dg-final { scan-assembler-times
            {vfneg\.v\s+v[0-9]+,\s*v[0-9]+} 30 } } */
            > +/* { dg-final { scan-assembler-not {csrr} } } */
            > +/* { dg-final { scan-tree-dump-not "1,1" "optimized" } } */
            > +/* { dg-final { scan-tree-dump-not "2,2" "optimized" } } */
            > +/* { dg-final { scan-tree-dump-not "4,4" "optimized" } } */
            > +/* { dg-final { scan-tree-dump-not "16,16" "optimized"
            } } */
            > +/* { dg-final { scan-tree-dump-not "32,32" "optimized"
            } } */
            > +/* { dg-final { scan-tree-dump-not "64,64" "optimized"
            } } */
            > +/* { dg-final { scan-tree-dump-not "128,128"
            "optimized" } } */
            > +/* { dg-final { scan-tree-dump-not "256,256"
            "optimized" } } */
            > +/* { dg-final { scan-tree-dump-not "512,512"
            "optimized" } } */
            > +/* { dg-final { scan-tree-dump-not "1024,1024"
            "optimized" } } */
            > +/* { dg-final { scan-tree-dump-not "2048,2048"
            "optimized" } } */
            > +/* { dg-final { scan-tree-dump-not "4096,4096"
            "optimized" } } */

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