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arm: Fix ICE on glibc compilation after my DIVMOD optimization [PR97322]

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The arm target hook for divmod wasn't prepared to handle constants passed to
the function.

2020-10-08  Jakub Jelinek  <jakub@redhat.com>

	PR target/97322
	* config/arm/arm.c (arm_expand_divmod_libfunc): Pass mode instead of
	GET_MODE (op0) or GET_MODE (op1) to emit_library_call_value.

	* gcc.dg/pr97322.c: New test.
This commit is contained in:
Jakub Jelinek 2020-10-08 11:56:15 +02:00
parent 9489806fa2
commit f18eeb6b95
2 changed files with 18 additions and 3 deletions
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4
gcc/config/arm/arm.c
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@ -33275,9 +33275,7 @@ arm_expand_divmod_libfunc (rtx libfunc, machine_mode mode,
= smallest_int_mode_for_size (2 * GET_MODE_BITSIZE (mode));
rtx libval = emit_library_call_value (libfunc, NULL_RTX, LCT_CONST,
libval_mode,
op0, GET_MODE (op0),
op1, GET_MODE (op1));
libval_mode, op0, mode, op1, mode);
rtx quotient = simplify_gen_subreg (mode, libval, libval_mode, 0);
rtx remainder = simplify_gen_subreg (mode, libval, libval_mode,

17
gcc/testsuite/gcc.dg/pr97322.c Normal file
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@ -0,0 +1,17 @@
/* PR target/97322 */
/* { dg-do compile } */
/* { dg-options "-O2" } */
void
foo (unsigned long long x, unsigned long long *y)
{
y[0] = x / 10;
y[1] = x % 10;
}
void
bar (unsigned int x, unsigned int *y)
{
y[0] = x / 10;
y[1] = x % 10;
}