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arm.c (TARGET_SCALAR_MODE_SUPPORTED_P): Redefine.

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2009-06-18  Sandra Loosemore  <sandra@codesourcery.com>

	gcc/
	* config/arm/arm.c (TARGET_SCALAR_MODE_SUPPORTED_P): Redefine.
	(arm_scalar_mode_supported_p): New function.

	gcc/testsuite/
	* gcc.target/arm/fp16-compile-none-2.c: New.
	* gcc.target/arm/fp16-compile-ieee-12.c: New.
	* gcc.target/arm/fp16-compile-alt-12.c: New.

From-SVN: r148657
This commit is contained in:
Sandra Loosemore 2009-06-18 08:33:27 -04:00 committed by Sandra Loosemore
parent 76d6502fc9
commit bdc4827b1c
6 changed files with 53 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2009-06-18 Sandra Loosemore <sandra@codesourcery.com>
* config/arm/arm.c (TARGET_SCALAR_MODE_SUPPORTED_P): Redefine.
(arm_scalar_mode_supported_p): New function.
2009-06-18 Paul Brook <paul@codesourcery.com>
Sandra Loosemore <sandra@codesourcery.com>

19
gcc/config/arm/arm.c
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@ -205,6 +205,7 @@ static const char *arm_invalid_parameter_type (const_tree t);
static const char *arm_invalid_return_type (const_tree t);
static tree arm_promoted_type (const_tree t);
static tree arm_convert_to_type (tree type, tree expr);
static bool arm_scalar_mode_supported_p (enum machine_mode);
/* Initialize the GCC target structure. */
@ -424,6 +425,9 @@ static tree arm_convert_to_type (tree type, tree expr);
#undef TARGET_CONVERT_TO_TYPE
#define TARGET_CONVERT_TO_TYPE arm_convert_to_type
#undef TARGET_SCALAR_MODE_SUPPORTED_P
#define TARGET_SCALAR_MODE_SUPPORTED_P arm_scalar_mode_supported_p
struct gcc_target targetm = TARGET_INITIALIZER;
/* Obstack for minipool constant handling. */
@ -16419,6 +16423,21 @@ arm_convert_to_type (tree type, tree expr)
return NULL_TREE;
}
/* Implement TARGET_SCALAR_MODE_SUPPORTED_P.
This simply adds HFmode as a supported mode; even though we don't
implement arithmetic on this type directly, it's supported by
optabs conversions, much the way the double-word arithmetic is
special-cased in the default hook. */
static bool
arm_scalar_mode_supported_p (enum machine_mode mode)
{
if (mode == HFmode)
return (arm_fp16_format != ARM_FP16_FORMAT_NONE);
else
return default_scalar_mode_supported_p (mode);
}
/* Errors in the source file can cause expand_expr to return const0_rtx
where we expect a vector. To avoid crashing, use one of the vector
clear instructions. */

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2009-06-18 Sandra Loosemore <sandra@codesourcery.com>
* gcc.target/arm/fp16-compile-none-2.c: New.
* gcc.target/arm/fp16-compile-ieee-12.c: New.
* gcc.target/arm/fp16-compile-alt-12.c: New.
2009-06-18 Sandra Loosemore <sandra@codesourcery.com>
* gcc.target/arm/fp16-compile-alt-1.c: New.

8
gcc/testsuite/gcc.target/arm/fp16-compile-alt-12.c Normal file
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@ -0,0 +1,8 @@
/* { dg-do compile } */
/* { dg-options "-mfp16-format=alternative" } */
float xx __attribute__((mode(HF))) = 0.0;
/* { dg-final { scan-assembler "\t.eabi_attribute 38, 2" } } */
/* { dg-final { scan-assembler "\t.size\txx, 2" } } */
/* { dg-final { scan-assembler "\t.space\t2" } } */

8
gcc/testsuite/gcc.target/arm/fp16-compile-ieee-12.c Normal file
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@ -0,0 +1,8 @@
/* { dg-do compile } */
/* { dg-options "-mfp16-format=ieee" } */
float xx __attribute__((mode(HF))) = 0.0;
/* { dg-final { scan-assembler "\t.eabi_attribute 38, 1" } } */
/* { dg-final { scan-assembler "\t.size\txx, 2" } } */
/* { dg-final { scan-assembler "\t.space\t2" } } */

7
gcc/testsuite/gcc.target/arm/fp16-compile-none-2.c Normal file
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@ -0,0 +1,7 @@
/* { dg-do compile } */
/* { dg-options "-mfp16-format=none" } */
/* mode(HF) attributes are not recognized unless you explicitly enable
half-precision floating point by selecting -mfp16-format=ieee or
-mfp16-format=alternative. */
float xx __attribute__((mode(HF))) = 0.0; /* { dg-error "HF" } */