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simplify-rtx.c (simplify_ternary_operation): Simplify vec_merge (vec_duplicate (vec_select)).

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2014-11-24  Petr Murzin  <petr.murzin@intel.com>

gcc/
	* simplify-rtx.c (simplify_ternary_operation): Simplify
	vec_merge (vec_duplicate (vec_select)).

gcc/testsuite/
	* gcc.target/i386/extract-insert-combining.c: New test.

From-SVN: r218015
This commit is contained in:
Petr Murzin 2014-11-24 12:00:54 +00:00 committed by Ilya Verbin
parent d8354ad712
commit 691b9fb7a2
4 changed files with 59 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-11-24 Petr Murzin <petr.murzin@intel.com>
* simplify-rtx.c (simplify_ternary_operation): Simplify
vec_merge (vec_duplicate (vec_select)).
2014-11-24 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/aarch64/aarch64.c (AARCH64_FUSE_ADRP_LDR): Define.

16
gcc/simplify-rtx.c
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@ -5233,6 +5233,22 @@ simplify_ternary_operation (enum rtx_code code, machine_mode mode,
op0, XEXP (op1, 0), op2);
}
}
/* Replace (vec_merge (vec_duplicate (vec_select a parallel (i))) a 1 << i)
with a. */
if (GET_CODE (op0) == VEC_DUPLICATE
&& GET_CODE (XEXP (op0, 0)) == VEC_SELECT
&& GET_CODE (XEXP (XEXP (op0, 0), 1)) == PARALLEL
&& mode_nunits[GET_MODE (XEXP (op0, 0))] == 1)
{
tem = XVECEXP ((XEXP (XEXP (op0, 0), 1)), 0, 0);
if (CONST_INT_P (tem) && CONST_INT_P (op2))
{
if (XEXP (XEXP (op0, 0), 0) == op1
&& UINTVAL (op2) == HOST_WIDE_INT_1U << UINTVAL (tem))
return op1;
}
}
}
if (rtx_equal_p (op0, op1)

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2014-11-24 Petr Murzin <petr.murzin@intel.com>
* gcc.target/i386/extract-insert-combining.c: New test.
2014-11-24 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* gcc.target/aarch64/fuse_adrp_add_1.c: New test.

34
gcc/testsuite/gcc.target/i386/extract-insert-combining.c Normal file
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@ -0,0 +1,34 @@
/* { dg-do compile } */
/* { dg-require-effective-target sse4 } */
/* { dg-options "-msse4.2 -O3" } */
/* { dg-final { scan-assembler-times "(?:vmovd|movd)\[ \\t\]+\[^\{\n\]*%xmm\[0-9\]" 3 } } */
/* { dg-final { scan-assembler-times "(?:vpaddd|paddd)\[ \\t\]+\[^\{\n\]*%xmm\[0-9\]" 2 } } */
/* { dg-final { scan-assembler-times "(?:vpinsrd|pinsrd)\[ \\t\]+\[^\{\n\]*%xmm\[0-9\]" 1 } } */
/* { dg-final { scan-assembler-not "vmovss" } } */
#include <immintrin.h>
int
main (int a, int b)
{
int res;
__m128i xa, xb, xres;
xa = _mm_insert_epi32 (xa, a, 0);
xb = _mm_insert_epi32 (xb, b, 0);
xres = _mm_add_epi32 (xa, xb);
res = _mm_extract_epi32 (xres, 0);
xres = _mm_insert_epi32 (xres, res, 0);
xb = _mm_insert_epi32 (xb, b, 0);
xres = _mm_add_epi32 (xres, xb);
res = _mm_extract_epi32 (xres, 0);
return res;
}