* [PATCH, i386, PR68627] Prohibit AVX-512VL broadcasts generation on KNL.
@ 2015-12-04 9:00 Kirill Yukhin
2015-12-08 8:47 ` Andreas Schwab
0 siblings, 1 reply; 5+ messages in thread
From: Kirill Yukhin @ 2015-12-04 9:00 UTC (permalink / raw)
To: GCC Patches; +Cc: Uros Bizjak
Hello,
Patch in the bottom fixes spec2k6/437.leslie3d illigal insn generation.
The problem is that for AVX-512F broacasts are allowed to 512b registers only.
[x|y]mm variants are AVX-512VL.
Bootstrapped and regtested.
I'll commit it into GCC main trunk on Monday if no objections.
gcc/
PR target/68627
* config/i386/sse.md: Make 'v' alternative work on 'avx512f' ISA only.
Force destination to 512 bits register.
gcc/testsuite/
PR target/68627
* gfortran.dg/pr68627.f: New test.
--
Thanks, K
commit ff93d08d61d58c28707b224f5b84ab30628b34a3
Author: Kirill Yukhin <kirill.yukhin@intel.com>
Date: Tue Dec 1 10:28:17 2015 +0300
AVX-512. Make broadcast from SSE reg AVX-512 only. Force to zmm.
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index e7b517a..0286e6b 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -17377,20 +17377,21 @@
(set_attr "mode" "<sseinsnmode>")])
(define_insn "vec_dup<mode>"
- [(set (match_operand:AVX_VEC_DUP_MODE 0 "register_operand" "=x,x,v,x")
+ [(set (match_operand:AVX_VEC_DUP_MODE 0 "register_operand" "=x,x,x,v,x")
(vec_duplicate:AVX_VEC_DUP_MODE
- (match_operand:<ssescalarmode> 1 "nonimmediate_operand" "m,m,v,?x")))]
+ (match_operand:<ssescalarmode> 1 "nonimmediate_operand" "m,m,x,v,?x")))]
"TARGET_AVX"
"@
v<sseintprefix>broadcast<bcstscalarsuff>\t{%1, %0|%0, %1}
vbroadcast<ssescalarmodesuffix>\t{%1, %0|%0, %1}
v<sseintprefix>broadcast<bcstscalarsuff>\t{%x1, %0|%0, %x1}
+ v<sseintprefix>broadcast<bcstscalarsuff>\t{%x1, %g0|%g0, %x1}
#"
[(set_attr "type" "ssemov")
(set_attr "prefix_extra" "1")
(set_attr "prefix" "maybe_evex")
- (set_attr "isa" "avx2,noavx2,avx2,noavx2")
- (set_attr "mode" "<sseinsnmode>,V8SF,<sseinsnmode>,V8SF")])
+ (set_attr "isa" "avx2,noavx2,avx2,avx512f,noavx2")
+ (set_attr "mode" "<sseinsnmode>,V8SF,<sseinsnmode>,<sseinsnmode>,V8SF")])
(define_split
[(set (match_operand:AVX2_VEC_DUP_MODE 0 "register_operand")
diff --git a/gcc/testsuite/gfortran.dg/pr68627.f b/gcc/testsuite/gfortran.dg/pr68627.f
new file mode 100755
index 0000000..32ff4a7
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr68627.f
@@ -0,0 +1,18 @@
+! { dg-do compile { target lp64 } }
+
+! { dg-options "-Ofast -mavx512f -ffixed-xmm1 -ffixed-xmm2 -ffixed-xmm3 -ffixed-xmm4 -ffixed-xmm5 -ffixed-xmm6 -ffixed-xmm7 -ffixed-xmm8 -ffixed-xmm9 -ffixed-xmm10 -ffixed-xmm11 -ffixed-xmm12 -ffixed-xmm13 -ffixed-xmm14 -ffixed-xmm15" }
+
+ IMPLICIT REAL*8(A-H,O-Z)
+ ALLOCATABLE DD1(:), DD2(:), WY(:,:)
+ ALLOCATE( DD1(MAX), DD2(MAX), WY(MAX,MAX))
+ DO J = J1,J2
+ DO I = I1, I2
+ DD1(I) = D1 * (WY(I-2,J) - WY(I+2,J) +
+ > (WY(I+1,J) - WY(I-1,J)))
+ END DO
+ DO I = I1, INT(D2 * D3(I))
+ END DO
+ END DO
+ END
+
+! { dg-final { scan-assembler-not "vbroadcastsd\[ \\t\]+%xmm\[0-9\]+, %ymm\[0-9\]+" } }
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH, i386, PR68627] Prohibit AVX-512VL broadcasts generation on KNL.
2015-12-04 9:00 [PATCH, i386, PR68627] Prohibit AVX-512VL broadcasts generation on KNL Kirill Yukhin
@ 2015-12-08 8:47 ` Andreas Schwab
2015-12-08 10:41 ` Kirill Yukhin
0 siblings, 1 reply; 5+ messages in thread
From: Andreas Schwab @ 2015-12-08 8:47 UTC (permalink / raw)
To: Kirill Yukhin; +Cc: GCC Patches, Uros Bizjak
FAIL: gfortran.dg/pr68627.f -O (test for excess errors)
Excess errors:
gfortran: error: unrecognized command line option '-mavx512f'
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH, i386, PR68627] Prohibit AVX-512VL broadcasts generation on KNL.
2015-12-08 8:47 ` Andreas Schwab
@ 2015-12-08 10:41 ` Kirill Yukhin
2015-12-08 12:01 ` Uros Bizjak
0 siblings, 1 reply; 5+ messages in thread
From: Kirill Yukhin @ 2015-12-08 10:41 UTC (permalink / raw)
To: Andreas Schwab; +Cc: GCC Patches, Uros Bizjak
Hello,
On 08 Dec 09:47, Andreas Schwab wrote:
> FAIL: gfortran.dg/pr68627.f -O (test for excess errors)
> Excess errors:
> gfortran: error: unrecognized command line option '-mavx512f'
Thanks for pointing.
I've checked in this as obvious:
gcc/testsuite:
* gfortran.dg/pr68627.f: Limit target x86.
diff --git a/gcc/testsuite/gfortran.dg/pr68627.f b/gcc/testsuite/gfortran.dg/pr68627.f
index 32ff4a7..54575d7 100644
--- a/gcc/testsuite/gfortran.dg/pr68627.f
+++ b/gcc/testsuite/gfortran.dg/pr68627.f
@@ -1,4 +1,4 @@
-! { dg-do compile { target lp64 } }
+! { dg-do compile { target { { i?86-*-* x86_64-*-* } && lp64 } } }
! { dg-options "-Ofast -mavx512f -ffixed-xmm1 -ffixed-xmm2 -ffixed-xmm3 -ffixed-xmm4 -ffixed-xmm5 -ffixed-xmm6 -ffixed-xmm7 -ffixed-xmm8 -ffixed-xmm9 -ffixed-xmm10 -ffixed-xmm11 -ffixed-xmm12 -ffixed-xmm13 -ffixed-xmm14 -ffixed-xmm15" }
--
Thanks, K
>
> Andreas.
>
> --
> Andreas Schwab, SUSE Labs, schwab@suse.de
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH, i386, PR68627] Prohibit AVX-512VL broadcasts generation on KNL.
2015-12-08 10:41 ` Kirill Yukhin
@ 2015-12-08 12:01 ` Uros Bizjak
2015-12-08 13:55 ` Kirill Yukhin
0 siblings, 1 reply; 5+ messages in thread
From: Uros Bizjak @ 2015-12-08 12:01 UTC (permalink / raw)
To: Kirill Yukhin; +Cc: Andreas Schwab, GCC Patches
On Tue, Dec 8, 2015 at 11:40 AM, Kirill Yukhin <kirill.yukhin@gmail.com> wrote:
> Hello,
> On 08 Dec 09:47, Andreas Schwab wrote:
>> FAIL: gfortran.dg/pr68627.f -O (test for excess errors)
>> Excess errors:
>> gfortran: error: unrecognized command line option '-mavx512f'
> Thanks for pointing.
>
> I've checked in this as obvious:
>
> gcc/testsuite:
> * gfortran.dg/pr68627.f: Limit target x86.
>
> diff --git a/gcc/testsuite/gfortran.dg/pr68627.f b/gcc/testsuite/gfortran.dg/pr68627.f
> index 32ff4a7..54575d7 100644
> --- a/gcc/testsuite/gfortran.dg/pr68627.f
> +++ b/gcc/testsuite/gfortran.dg/pr68627.f
> @@ -1,4 +1,4 @@
> -! { dg-do compile { target lp64 } }
> +! { dg-do compile { target { { i?86-*-* x86_64-*-* } && lp64 } } }
Actually, you need { ! { ia32 } } here, since lp64 filters out x32 in
addition to ia32. Please note that since x32 is x86_64 target, it
implies 16 xmm registers.
Uros.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH, i386, PR68627] Prohibit AVX-512VL broadcasts generation on KNL.
2015-12-08 12:01 ` Uros Bizjak
@ 2015-12-08 13:55 ` Kirill Yukhin
0 siblings, 0 replies; 5+ messages in thread
From: Kirill Yukhin @ 2015-12-08 13:55 UTC (permalink / raw)
To: Uros Bizjak; +Cc: Andreas Schwab, GCC Patches
On 08 Dec 13:01, Uros Bizjak wrote:
> On Tue, Dec 8, 2015 at 11:40 AM, Kirill Yukhin <kirill.yukhin@gmail.com> wrote:
> > Hello,
> > On 08 Dec 09:47, Andreas Schwab wrote:
> >> FAIL: gfortran.dg/pr68627.f -O (test for excess errors)
> >> Excess errors:
> >> gfortran: error: unrecognized command line option '-mavx512f'
> > Thanks for pointing.
> >
> > I've checked in this as obvious:
> >
> > gcc/testsuite:
> > * gfortran.dg/pr68627.f: Limit target x86.
> >
> > diff --git a/gcc/testsuite/gfortran.dg/pr68627.f b/gcc/testsuite/gfortran.dg/pr68627.f
> > index 32ff4a7..54575d7 100644
> > --- a/gcc/testsuite/gfortran.dg/pr68627.f
> > +++ b/gcc/testsuite/gfortran.dg/pr68627.f
> > @@ -1,4 +1,4 @@
> > -! { dg-do compile { target lp64 } }
> > +! { dg-do compile { target { { i?86-*-* x86_64-*-* } && lp64 } } }
>
> Actually, you need { ! { ia32 } } here, since lp64 filters out x32 in
> addition to ia32. Please note that since x32 is x86_64 target, it
> implies 16 xmm registers.
Thanks Uroš, fixed in main trunk.
>
> Uros.
--
Thanks, K
^ permalink raw reply [flat|nested] 5+ messages in thread
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2015-12-04 9:00 [PATCH, i386, PR68627] Prohibit AVX-512VL broadcasts generation on KNL Kirill Yukhin
2015-12-08 8:47 ` Andreas Schwab
2015-12-08 10:41 ` Kirill Yukhin
2015-12-08 12:01 ` Uros Bizjak
2015-12-08 13:55 ` Kirill Yukhin
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