Message ID | 20240124091913.38156-1-xujiahao@loongson.cn |
---|---|
State | New |
Headers | show |
Series | Loongarch: Remove vec_concatz<mode> pattern | expand |
Jiahao: Note that the LoongArch 'a' in the title needs to be capitalized. I modified this patch and incorporated it first. 在 2024/1/24 下午5:19, Jiahao Xu 写道: > It is incorrect to use vld/vori to implement the vec_concatz<mode> because when the LSX > instruction is used to update the value of the vector register, the upper 128 bits of > the vector register will not be zeroed. > > gcc/ChangeLog: > > * config/loongarch/lasx.md (@vec_concatz<mode>): Remove this define_insn pattern. > * config/loongarch/loongarch.cc (loongarch_expand_vector_group_init): Use vec_concat<mode>. > > diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md > index 90f66ee4d24..e2115ffb884 100644 > --- a/gcc/config/loongarch/lasx.md > +++ b/gcc/config/loongarch/lasx.md > @@ -582,21 +582,6 @@ (define_insn "lasx_xvinsgr2vr_<lasxfmt_f_wd>" > [(set_attr "type" "simd_insert") > (set_attr "mode" "<MODE>")]) > > -(define_insn "@vec_concatz<mode>" > - [(set (match_operand:LASX 0 "register_operand" "=f") > - (vec_concat:LASX > - (match_operand:<VHMODE256_ALL> 1 "nonimmediate_operand") > - (match_operand:<VHMODE256_ALL> 2 "const_0_operand")))] > - "ISA_HAS_LASX" > -{ > - if (MEM_P (operands[1])) > - return "vld\t%w0,%1"; > - else > - return "vori.b\t%w0,%w1,0"; > -} > - [(set_attr "type" "simd_splat") > - (set_attr "mode" "<MODE>")]) > - > (define_insn "vec_concat<mode>" > [(set (match_operand:LASX 0 "register_operand" "=f") > (vec_concat:LASX > diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc > index 072c68d97e3..cd335827570 100644 > --- a/gcc/config/loongarch/loongarch.cc > +++ b/gcc/config/loongarch/loongarch.cc > @@ -9917,17 +9917,12 @@ loongarch_expand_vector_group_init (rtx target, rtx vals) > gcc_unreachable (); > } > > - if (high == CONST0_RTX (half_mode)) > - emit_insn (gen_vec_concatz (vmode, target, low, high)); > - else > - { > - if (!register_operand (low, half_mode)) > - low = force_reg (half_mode, low); > - if (!register_operand (high, half_mode)) > - high = force_reg (half_mode, high); > - emit_insn (gen_rtx_SET (target, > - gen_rtx_VEC_CONCAT (vmode, low, high))); > - } > + if (!register_operand (low, half_mode)) > + low = force_reg (half_mode, low); > + if (!register_operand (high, half_mode)) > + high = force_reg (half_mode, high); > + emit_insn (gen_rtx_SET (target, > + gen_rtx_VEC_CONCAT (vmode, low, high))); > } > > /* Expand initialization of a vector which has all same elements. */
在 2024/1/25 下午3:46, chenglulu 写道: > Jiahao: > > Note that the LoongArch 'a' in the title needs to be capitalized. > > I modified this patch and incorporated it first. > > Thanks, I'll pay attention next time. > 在 2024/1/24 下午5:19, Jiahao Xu 写道: >> It is incorrect to use vld/vori to implement the vec_concatz<mode> >> because when the LSX >> instruction is used to update the value of the vector register, the >> upper 128 bits of >> the vector register will not be zeroed. >> >> gcc/ChangeLog: >> >> * config/loongarch/lasx.md (@vec_concatz<mode>): Remove this >> define_insn pattern. >> * config/loongarch/loongarch.cc >> (loongarch_expand_vector_group_init): Use vec_concat<mode>. >> >> diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md >> index 90f66ee4d24..e2115ffb884 100644 >> --- a/gcc/config/loongarch/lasx.md >> +++ b/gcc/config/loongarch/lasx.md >> @@ -582,21 +582,6 @@ (define_insn "lasx_xvinsgr2vr_<lasxfmt_f_wd>" >> [(set_attr "type" "simd_insert") >> (set_attr "mode" "<MODE>")]) >> -(define_insn "@vec_concatz<mode>" >> - [(set (match_operand:LASX 0 "register_operand" "=f") >> - (vec_concat:LASX >> - (match_operand:<VHMODE256_ALL> 1 "nonimmediate_operand") >> - (match_operand:<VHMODE256_ALL> 2 "const_0_operand")))] >> - "ISA_HAS_LASX" >> -{ >> - if (MEM_P (operands[1])) >> - return "vld\t%w0,%1"; >> - else >> - return "vori.b\t%w0,%w1,0"; >> -} >> - [(set_attr "type" "simd_splat") >> - (set_attr "mode" "<MODE>")]) >> - >> (define_insn "vec_concat<mode>" >> [(set (match_operand:LASX 0 "register_operand" "=f") >> (vec_concat:LASX >> diff --git a/gcc/config/loongarch/loongarch.cc >> b/gcc/config/loongarch/loongarch.cc >> index 072c68d97e3..cd335827570 100644 >> --- a/gcc/config/loongarch/loongarch.cc >> +++ b/gcc/config/loongarch/loongarch.cc >> @@ -9917,17 +9917,12 @@ loongarch_expand_vector_group_init (rtx >> target, rtx vals) >> gcc_unreachable (); >> } >> - if (high == CONST0_RTX (half_mode)) >> - emit_insn (gen_vec_concatz (vmode, target, low, high)); >> - else >> - { >> - if (!register_operand (low, half_mode)) >> - low = force_reg (half_mode, low); >> - if (!register_operand (high, half_mode)) >> - high = force_reg (half_mode, high); >> - emit_insn (gen_rtx_SET (target, >> - gen_rtx_VEC_CONCAT (vmode, low, high))); >> - } >> + if (!register_operand (low, half_mode)) >> + low = force_reg (half_mode, low); >> + if (!register_operand (high, half_mode)) >> + high = force_reg (half_mode, high); >> + emit_insn (gen_rtx_SET (target, >> + gen_rtx_VEC_CONCAT (vmode, low, high))); >> } >> /* Expand initialization of a vector which has all same >> elements. */
Pushed to r14-8414. 在 2024/1/24 下午5:19, Jiahao Xu 写道: > It is incorrect to use vld/vori to implement the vec_concatz<mode> because when the LSX > instruction is used to update the value of the vector register, the upper 128 bits of > the vector register will not be zeroed. > > gcc/ChangeLog: > > * config/loongarch/lasx.md (@vec_concatz<mode>): Remove this define_insn pattern. > * config/loongarch/loongarch.cc (loongarch_expand_vector_group_init): Use vec_concat<mode>. > > diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md > index 90f66ee4d24..e2115ffb884 100644 > --- a/gcc/config/loongarch/lasx.md > +++ b/gcc/config/loongarch/lasx.md > @@ -582,21 +582,6 @@ (define_insn "lasx_xvinsgr2vr_<lasxfmt_f_wd>" > [(set_attr "type" "simd_insert") > (set_attr "mode" "<MODE>")]) > > -(define_insn "@vec_concatz<mode>" > - [(set (match_operand:LASX 0 "register_operand" "=f") > - (vec_concat:LASX > - (match_operand:<VHMODE256_ALL> 1 "nonimmediate_operand") > - (match_operand:<VHMODE256_ALL> 2 "const_0_operand")))] > - "ISA_HAS_LASX" > -{ > - if (MEM_P (operands[1])) > - return "vld\t%w0,%1"; > - else > - return "vori.b\t%w0,%w1,0"; > -} > - [(set_attr "type" "simd_splat") > - (set_attr "mode" "<MODE>")]) > - > (define_insn "vec_concat<mode>" > [(set (match_operand:LASX 0 "register_operand" "=f") > (vec_concat:LASX > diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc > index 072c68d97e3..cd335827570 100644 > --- a/gcc/config/loongarch/loongarch.cc > +++ b/gcc/config/loongarch/loongarch.cc > @@ -9917,17 +9917,12 @@ loongarch_expand_vector_group_init (rtx target, rtx vals) > gcc_unreachable (); > } > > - if (high == CONST0_RTX (half_mode)) > - emit_insn (gen_vec_concatz (vmode, target, low, high)); > - else > - { > - if (!register_operand (low, half_mode)) > - low = force_reg (half_mode, low); > - if (!register_operand (high, half_mode)) > - high = force_reg (half_mode, high); > - emit_insn (gen_rtx_SET (target, > - gen_rtx_VEC_CONCAT (vmode, low, high))); > - } > + if (!register_operand (low, half_mode)) > + low = force_reg (half_mode, low); > + if (!register_operand (high, half_mode)) > + high = force_reg (half_mode, high); > + emit_insn (gen_rtx_SET (target, > + gen_rtx_VEC_CONCAT (vmode, low, high))); > } > > /* Expand initialization of a vector which has all same elements. */
diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md index 90f66ee4d24..e2115ffb884 100644 --- a/gcc/config/loongarch/lasx.md +++ b/gcc/config/loongarch/lasx.md @@ -582,21 +582,6 @@ (define_insn "lasx_xvinsgr2vr_<lasxfmt_f_wd>" [(set_attr "type" "simd_insert") (set_attr "mode" "<MODE>")]) -(define_insn "@vec_concatz<mode>" - [(set (match_operand:LASX 0 "register_operand" "=f") - (vec_concat:LASX - (match_operand:<VHMODE256_ALL> 1 "nonimmediate_operand") - (match_operand:<VHMODE256_ALL> 2 "const_0_operand")))] - "ISA_HAS_LASX" -{ - if (MEM_P (operands[1])) - return "vld\t%w0,%1"; - else - return "vori.b\t%w0,%w1,0"; -} - [(set_attr "type" "simd_splat") - (set_attr "mode" "<MODE>")]) - (define_insn "vec_concat<mode>" [(set (match_operand:LASX 0 "register_operand" "=f") (vec_concat:LASX diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc index 072c68d97e3..cd335827570 100644 --- a/gcc/config/loongarch/loongarch.cc +++ b/gcc/config/loongarch/loongarch.cc @@ -9917,17 +9917,12 @@ loongarch_expand_vector_group_init (rtx target, rtx vals) gcc_unreachable (); } - if (high == CONST0_RTX (half_mode)) - emit_insn (gen_vec_concatz (vmode, target, low, high)); - else - { - if (!register_operand (low, half_mode)) - low = force_reg (half_mode, low); - if (!register_operand (high, half_mode)) - high = force_reg (half_mode, high); - emit_insn (gen_rtx_SET (target, - gen_rtx_VEC_CONCAT (vmode, low, high))); - } + if (!register_operand (low, half_mode)) + low = force_reg (half_mode, low); + if (!register_operand (high, half_mode)) + high = force_reg (half_mode, high); + emit_insn (gen_rtx_SET (target, + gen_rtx_VEC_CONCAT (vmode, low, high))); } /* Expand initialization of a vector which has all same elements. */