On Thu, 22 Nov 2018 at 18:30, Vladimir Makarov <vmaka...@redhat.com> wrote:
>
> The following patch fixes
>
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87718
>
> The patch adds a special treatment for moves with a hard register in
> register cost and class calculation.
>
> The patch was bootstrapped and tested on x86-64 and ppc64.
>
> I found two testsuite regressions because of the patch. The expected
> generated code for PR82361 test is too specific. GCC with the patch
> generates the same quality code but with a different hard register on
> x86-64. So I just changed the test for PR82361.
>
> Another test is for ppc64. I think the expected generated code for
> this test is wrong. I'll submit a changed test for a discussion later.
>
> Although I spent much time on the solution and I think it is the
> right one, the patch is in very sensitive area of RA and may affect
> expected code generation for many targets. I am ready to work on the
> new regressions as soon as they are found.
>
> The patch was committed as rev. 260385.
>
Hi,
This patch introduced at least several ICEs on arm targets:
on arm-none-linux-gnueabi --with-cpu=cortex-a9:
Executed from: gcc.target/arm/arm.exp
gcc.target/arm/attr-neon-fp16.c (internal compiler error)
gcc.target/arm/pr51968.c (internal compiler error)
gcc.target/arm/pr68620.c (internal compiler error)
Executed from: gcc.target/arm/simd/simd.exp
gcc.target/arm/simd/vextp16_1.c (internal compiler error)
gcc.target/arm/simd/vextp8_1.c (internal compiler error)
gcc.target/arm/simd/vexts16_1.c (internal compiler error)
gcc.target/arm/simd/vexts8_1.c (internal compiler error)
gcc.target/arm/simd/vextu16_1.c (internal compiler error)
gcc.target/arm/simd/vextu8_1.c (internal compiler error)
gcc.target/arm/simd/vrev16p8_1.c (internal compiler error)
gcc.target/arm/simd/vrev16s8_1.c (internal compiler error)
gcc.target/arm/simd/vrev16u8_1.c (internal compiler error)
gcc.target/arm/simd/vrev32p16_1.c (internal compiler error)
gcc.target/arm/simd/vrev32p8_1.c (internal compiler error)
gcc.target/arm/simd/vrev32s16_1.c (internal compiler error)
gcc.target/arm/simd/vrev32s8_1.c (internal compiler error)
gcc.target/arm/simd/vrev32u16_1.c (internal compiler error)
gcc.target/arm/simd/vrev32u8_1.c (internal compiler error)
gcc.target/arm/simd/vrev64f32_1.c (internal compiler error)
gcc.target/arm/simd/vrev64p16_1.c (internal compiler error)
gcc.target/arm/simd/vrev64p8_1.c (internal compiler error)
gcc.target/arm/simd/vrev64s16_1.c (internal compiler error)
gcc.target/arm/simd/vrev64s32_1.c (internal compiler error)
gcc.target/arm/simd/vrev64s8_1.c (internal compiler error)
gcc.target/arm/simd/vrev64u16_1.c (internal compiler error)
gcc.target/arm/simd/vrev64u32_1.c (internal compiler error)
gcc.target/arm/simd/vrev64u8_1.c (internal compiler error)
arm-none-linux-gnueabihf shows only 1 ICE:
gcc.target/arm/pr51968.c (internal compiler error)
There are other regressions on the same targets, but not ICEs.
I can report them later.
Thanks,
Christophe
