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[ARM] Rename FPSCR builtins to correct names

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The GCC documentation in section 6.60.8 ARM Floating Point Status and
Control Intrinsics states that the FPSCR register can be read and
written to using the intrinsics __builtin_arm_get_fpscr and
__builtin_arm_set_fpscr. However, these are misnamed within GCC itself
and these intrinsic names are not recognised.

This patch corrects the intrinsic names to match the documentation, and
adds tests to verify these intrinsics generate the correct
instructions.

2017-05-04  Prakhar Bahuguna  <prakhar.bahuguna@arm.com>

    gcc/
    * gcc/config/arm/arm-builtins.c (arm_init_builtins): Rename
    __builtin_arm_ldfscr to __builtin_arm_get_fpscr, and rename
    __builtin_arm_stfscr to __builtin_arm_set_fpscr.

    gcc/testsuite/
    * gcc.target/arm/fpscr.c: New file.

From-SVN: r247584
This commit is contained in:
Prakhar Bahuguna 2017-05-04 10:16:04 +00:00 committed by Thomas Preud'homme
parent cd09e219ce
commit 556cf0887e
4 changed files with 28 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2017-05-04 Prakhar Bahuguna <prakhar.bahuguna@arm.com>
* gcc/config/arm/arm-builtins.c (arm_init_builtins): Rename
__builtin_arm_ldfscr to __builtin_arm_get_fpscr, and rename
__builtin_arm_stfscr to __builtin_arm_set_fpscr.
2017-05-04 Martin Liska <mliska@suse.cz>
* tree-vrp.c (simplify_cond_using_ranges_2): Remove unused

4
gcc/config/arm/arm-builtins.c
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@ -1893,10 +1893,10 @@ arm_init_builtins (void)
= build_function_type_list (unsigned_type_node, NULL);
arm_builtin_decls[ARM_BUILTIN_GET_FPSCR]
= add_builtin_function ("__builtin_arm_ldfscr", ftype_get_fpscr,
= add_builtin_function ("__builtin_arm_get_fpscr", ftype_get_fpscr,
ARM_BUILTIN_GET_FPSCR, BUILT_IN_MD, NULL, NULL_TREE);
arm_builtin_decls[ARM_BUILTIN_SET_FPSCR]
= add_builtin_function ("__builtin_arm_stfscr", ftype_set_fpscr,
= add_builtin_function ("__builtin_arm_set_fpscr", ftype_set_fpscr,
ARM_BUILTIN_SET_FPSCR, BUILT_IN_MD, NULL, NULL_TREE);
}

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2017-05-04 Prakhar Bahuguna <prakhar.bahuguna@arm.com>
* gcc.target/arm/fpscr.c: New file.
2017-05-04 Thomas Preud'homme <thomas.preudhomme@arm.com>
* gcc.c-torture/execute/pr78622.c: Require c99_runtime effective

16
gcc/testsuite/gcc.target/arm/fpscr.c Normal file
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@ -0,0 +1,16 @@
/* Test the fpscr builtins. */
/* { dg-do compile } */
/* { dg-require-effective-target arm_fp_ok } */
/* { dg-skip-if "need fp instructions" { *-*-* } { "-mfloat-abi=soft" } { "" } } */
/* { dg-add-options arm_fp } */
void
test_fpscr ()
{
volatile unsigned int status = __builtin_arm_get_fpscr ();
__builtin_arm_set_fpscr (status);
}
/* { dg-final { scan-assembler "mrc\tp10, 7, r\[0-9\]+, cr1, cr0, 0" } } */
/* { dg-final { scan-assembler "mcr\tp10, 7, r\[0-9\]+, cr1, cr0, 0" } } */