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AArch64: Add if condition in aarch64_function_value [PR96479]

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Report diagnostic information instead of ICE if it generats fp/simd for
return register when fp/simd is disabled by -mgeneral-regs-only.

gcc/ChangeLog:

	* config/aarch64/aarch64.c (aarch64_function_value): Add if
	condition to check ag_mode after entering if condition of
	aarch64_vfp_is_call_or_return_candidate. If TARGET_FLOAT is
	set as false by -mgeneral-regs-only, report the diagnostic
	information of -mgeneral-regs-only imcompatible with the use
	of fp/simd register(s).

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/mgeneral-regs_1.c: Add the comment that
	-mgeneral-regs-only is compatible with the use of vector type
	used in the test case.
This commit is contained in:
Peixin Qiao 2020-08-12 17:11:41 +01:00 committed by Richard Sandiford
parent 21cfe724cb
commit b418ccb358
2 changed files with 6 additions and 2 deletions
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4
gcc/config/aarch64/aarch64.c
View File

@ -5554,6 +5554,10 @@ aarch64_function_value (const_tree type, const_tree func,
if (aarch64_vfp_is_call_or_return_candidate (mode, type, &ag_mode, &count,
NULL, false))
{
/* TYPE passed in fp/simd registers. */
if (!TARGET_FLOAT)
aarch64_err_no_fpadvsimd (ag_mode);
gcc_assert (!sve_p);
if (!aarch64_composite_type_p (type, mode))
{

4
gcc/testsuite/gcc.target/aarch64/mgeneral-regs_1.c
View File

@ -4,6 +4,6 @@ typedef int int32x2_t __attribute__ ((__vector_size__ ((8))));
/* { dg-error "'-mgeneral-regs-only' is incompatible with the use of vector types" "" {target "aarch64*-*-*"} .+1 } */
int32x2_t test (int32x2_t a, int32x2_t b)
{
return a + b;
{ /* { dg-error "'-mgeneral-regs-only' is incompatible with the use of vector types" } */
return a + b; /* { dg-error "'-mgeneral-regs-only' is incompatible with the use of vector types" } */
}