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https://gcc.gnu.org/PR91472
Fix gmp test suite failrues.
From 0a09a00c87081e0a8d1d382b33bb0b1ec03875e7 Mon Sep 17 00:00:00 2001
From: ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun, 1 Sep 2019 12:55:22 +0000
Subject: [PATCH] PR target/91472 * config/sparc/sparc.c
(sparc_cannot_force_const_mem): Return true during LRA/reload in PIC mode
if the PIC register hasn't been used yet. (sparc_pic_register_p): Test
reload_in_progress for consistency's sake.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@275270 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/config/sparc/sparc.c | 9 ++++-
.../gcc.c-torture/execute/20190901-1.c | 36 +++++++++++++++++++
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -4201,6 +4201,13 @@ eligible_for_sibcall_delay (rtx_insn *trial)
static bool
sparc_cannot_force_const_mem (machine_mode mode, rtx x)
{
+ /* After IRA has run in PIC mode, it is too late to put anything into the
+ constant pool if the PIC register hasn't already been initialized. */
+ if ((lra_in_progress || reload_in_progress)
+ && flag_pic
+ && !crtl->uses_pic_offset_table)
+ return true;
+
switch (GET_CODE (x))
{
case CONST_INT:
@@ -4450,7 +4457,7 @@ sparc_pic_register_p (rtx x)
return true;
if (!HARD_REGISTER_P (pic_offset_table_rtx)
- && (HARD_REGISTER_P (x) || lra_in_progress)
+ && (HARD_REGISTER_P (x) || lra_in_progress || reload_in_progress)
&& ORIGINAL_REGNO (x) == REGNO (pic_offset_table_rtx))
return true;
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20190901-1.c
@@ -0,0 +1,36 @@
+/* PR target/91472 */
+/* Reported by John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> */
+
+typedef unsigned int gmp_uint_least32_t;
+
+union ieee_double_extract
+{
+ struct
+ {
+ gmp_uint_least32_t sig:1;
+ gmp_uint_least32_t exp:11;
+ gmp_uint_least32_t manh:20;
+ gmp_uint_least32_t manl:32;
+ } s;
+ double d;
+};
+
+double __attribute__((noipa))
+tests_infinity_d (void)
+{
+ union ieee_double_extract x;
+ x.s.exp = 2047;
+ x.s.manl = 0;
+ x.s.manh = 0;
+ x.s.sig = 0;
+ return x.d;
+}
+
+int
+main (void)
+{
+ double x = tests_infinity_d ();
+ if (x == 0.0)
+ __builtin_abort ();
+ return 0;
+}
--
2.23.0
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