From: Jakub Jelinek <jakub@redhat.com>
To: Richard Earnshaw <richard.earnshaw@arm.com>,
Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>,
Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Cc: gcc-patches@gcc.gnu.org
Subject: [PATCH] arm: Fix ICE on glibc compilation after my DIVMOD optimization [PR97322]
Date: Thu, 8 Oct 2020 11:19:53 +0200 [thread overview]
Message-ID: <20201008091953.GP2176@tucnak> (raw)
Hi!
The arm target hook for divmod wasn't prepared to handle constants passed to
the function.
Fixed thusly, bootstrapped/regtested on armv7hl-linux-gnueabi, ok for trunk?
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.
--- gcc/config/arm/arm.c.jj 2020-10-07 10:47:46.892985596 +0200
+++ gcc/config/arm/arm.c 2020-10-07 20:19:25.524367665 +0200
@@ -33275,9 +33275,7 @@ arm_expand_divmod_libfunc (rtx libfunc,
= 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,
--- gcc/testsuite/gcc.dg/pr97322.c.jj 2020-10-07 20:19:54.071961807 +0200
+++ gcc/testsuite/gcc.dg/pr97322.c 2020-10-07 20:19:16.897490309 +0200
@@ -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;
+}
Jakub
next reply other threads:[~2020-10-08 9:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-08 9:19 Jakub Jelinek [this message]
2020-10-08 9:23 ` Ramana Radhakrishnan
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