https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110371
--- Comment #6 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Thiago Jung Bauermann from comment #0)
> Created attachment 55387 [details]
> Output of running gfortran with -freport-bug
>
> In today's trunk (tested commit 33ebb0dff9bb "configure: Implement
> --enable-host-bind-now") I get these new failures on aarch64-linux-gnu:
>
> Running gcc:gcc.target/aarch64/sve/aarch64-sve.exp ...
> FAIL: gcc.target/aarch64/sve/pack_fcvt_signed_1.c scan-assembler-times
> \\tfcvtzs\\tz[0-9]+\\.s, p[0-7]/m, z[0-9]+\\.d\\n 2
> FAIL: gcc.target/aarch64/sve/pack_fcvt_signed_1.c scan-assembler-times
> \\tuzp1\\tz[0-9]+\\.s, z[0-9]+\\.s, z[0-9]+\\.s\\n 1
> FAIL: gcc.target/aarch64/sve/pack_fcvt_unsigned_1.c scan-assembler-times
> \\tfcvtzu\\tz[0-9]+\\.s, p[0-7]/m, z[0-9]+\\.d\\n 2
> FAIL: gcc.target/aarch64/sve/pack_fcvt_unsigned_1.c scan-assembler-times
> \\tuzp1\\tz[0-9]+\\.s, z[0-9]+\\.s, z[0-9]+\\.s\\n 1
> FAIL: gcc.target/aarch64/sve/unpack_fcvt_signed_1.c scan-assembler-times
> \\tscvtf\\tz[0-9]+\\.d, p[0-7]/m, z[0-9]+\\.s\\n 2
> FAIL: gcc.target/aarch64/sve/unpack_fcvt_signed_1.c scan-assembler-times
> \\tzip1\\tz[0-9]+\\.s, z[0-9]+\\.s, z[0-9]+\\.s\\n 1
> FAIL: gcc.target/aarch64/sve/unpack_fcvt_signed_1.c scan-assembler-times
> \\tzip2\\tz[0-9]+\\.s, z[0-9]+\\.s, z[0-9]+\\.s\\n 1
> FAIL: gcc.target/aarch64/sve/unpack_fcvt_unsigned_1.c scan-assembler-times
> \\tucvtf\\tz[0-9]+\\.d, p[0-7]/m, z[0-9]+\\.s\\n 2
> FAIL: gcc.target/aarch64/sve/unpack_fcvt_unsigned_1.c scan-assembler-times
> \\tzip1\\tz[0-9]+\\.s, z[0-9]+\\.s, z[0-9]+\\.s\\n 1
> FAIL: gcc.target/aarch64/sve/unpack_fcvt_unsigned_1.c scan-assembler-times
> \\tzip2\\tz[0-9]+\\.s, z[0-9]+\\.s, z[0-9]+\\.s\\n 1
> === gfortran tests ===
>
For this scan-assembler failures, It looks like gcc now generates better code,
is it ok to adjust testcase to match new assembly?
current:
ld1d z31.d, p7/z, [x1, x3, lsl 3]
fadd z31.d, p7/m, z31.d, z30.d
fcvtzs z31.d, p6/m, z31.d
st1w z31.d, p7, [x0, x3, lsl 2]
add x3, x3, x4
whilelo p7.d, w3, w2
b.any .L3
vs
original
punpklo p2.h, p0.b
punpkhi p1.h, p0.b
ld1d z0.d, p2/z, [x1, x3, lsl 3]
ld1d z1.d, p1/z, [x5, x3, lsl 3]
fadd z0.d, p2/m, z0.d, z2.d
fadd z1.d, p1/m, z1.d, z2.d
fcvtzs z0.s, p3/m, z0.d
fcvtzs z1.s, p3/m, z1.d
uzp1 z0.s, z0.s, z1.s
st1w z0.s, p0, [x0, x3, lsl 2]
add x3, x3, x4
whilelo p0.s, w3, w2
b.any .L3
https://godbolt.org/z/b4cW7WKev
