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[simplify-rtx][2/2] Use constants from pool when simplifying binops

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* simplify-rtx.c (simplify_binary_operation): If either operand was
	a constant pool reference use them if all other simplifications failed.

	* gcc.target/aarch64/fmul_fcvt_1.c: Add multiply-by-32 cases.

From-SVN: r229086
This commit is contained in:
Kyrylo Tkachov 2015-10-20 16:13:29 +00:00 • committed by Kyrylo Tkachov
parent 3925297376
commit bfb792b604
4 changed files with 32 additions and 1 deletions
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5
gcc/ChangeLog
View file

@ -1,3 +1,8 @@
2015-10-20 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* simplify-rtx.c (simplify_binary_operation): If either operand was
a constant pool reference use them if all other simplifications failed.
2015-10-20 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/aarch64/aarch64.md

12
gcc/simplify-rtx.c
View file

@ -2001,7 +2001,17 @@ simplify_binary_operation (enum rtx_code code, machine_mode mode,
tem = simplify_const_binary_operation (code, mode, trueop0, trueop1);
if (tem)
return tem;
return simplify_binary_operation_1 (code, mode, op0, op1, trueop0, trueop1);
tem = simplify_binary_operation_1 (code, mode, op0, op1, trueop0, trueop1);
if (tem)
return tem;
/* If the above steps did not result in a simplification and op0 or op1
were constant pool references, use the referenced constants directly. */
if (trueop0 != op0 || trueop1 != op1)
return simplify_gen_binary (code, mode, trueop0, trueop1);
return NULL_RTX;
}
/* Subroutine of simplify_binary_operation. Simplify a binary operation

4
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2015-10-20 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* gcc.target/aarch64/fmul_fcvt_1.c: Add multiply-by-32 cases.
2015-10-20 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* gcc.target/aarch64/fmul_fcvt_1.c: New test.

12
gcc/testsuite/gcc.target/aarch64/fmul_fcvt_1.c
View file

@ -83,6 +83,16 @@ FUNC_DEFD (16)
/* { dg-final { scan-assembler-times "fcvtzu\tx\[0-9\], d\[0-9\]*.*#4" 1 } } */
/* { dg-final { scan-assembler-times "fcvtzu\tw\[0-9\], d\[0-9\]*.*#4" 1 } } */
FUNC_DEFS (32)
FUNC_DEFD (32)
/* { dg-final { scan-assembler-times "fcvtzs\tw\[0-9\], s\[0-9\]*.*#5" 1 } } */
/* { dg-final { scan-assembler-times "fcvtzs\tx\[0-9\], s\[0-9\]*.*#5" 1 } } */
/* { dg-final { scan-assembler-times "fcvtzs\tx\[0-9\], d\[0-9\]*.*#5" 1 } } */
/* { dg-final { scan-assembler-times "fcvtzs\tw\[0-9\], d\[0-9\]*.*#5" 1 } } */
/* { dg-final { scan-assembler-times "fcvtzu\tw\[0-9\], s\[0-9\]*.*#5" 1 } } */
/* { dg-final { scan-assembler-times "fcvtzu\tx\[0-9\], s\[0-9\]*.*#5" 1 } } */
/* { dg-final { scan-assembler-times "fcvtzu\tx\[0-9\], d\[0-9\]*.*#5" 1 } } */
/* { dg-final { scan-assembler-times "fcvtzu\tw\[0-9\], d\[0-9\]*.*#5" 1 } } */
#define FUNC_TESTS(__a, __b) \
do \
@ -120,10 +130,12 @@ main (void)
FUNC_TESTS (4, i);
FUNC_TESTS (8, i);
FUNC_TESTS (16, i);
FUNC_TESTS (32, i);
FUNC_TESTD (4, i);
FUNC_TESTD (8, i);
FUNC_TESTD (16, i);
FUNC_TESTD (32, i);
}
return 0;
}