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patch to fix PR84014
- From: Vladimir Makarov <vmakarov at redhat dot com>
- To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 24 Jan 2018 14:50:05 -0500
- Subject: patch to fix PR84014
- Authentication-results: sourceware.org; auth=none
The following patch fixes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84014
The patch was tested on powerpc64 and bootstrapped on x86-64.
Committed as rev. 257029.
Index: ChangeLog
===================================================================
--- ChangeLog (revision 257028)
+++ ChangeLog (working copy)
@@ -1,3 +1,9 @@
+2018-01-24 Vladimir Makarov <vmakarov@redhat.com>
+
+ PR target/84014
+ * ira-build.c (setup_min_max_allocno_live_range_point): Set up
+ min/max for never referenced object.
+
2018-01-24 Jakub Jelinek <jakub@redhat.com>
PR middle-end/83977
Index: testsuite/ChangeLog
===================================================================
--- testsuite/ChangeLog (revision 257028)
+++ testsuite/ChangeLog (working copy)
@@ -1,3 +1,8 @@
+2018-01-24 Vladimir Makarov <vmakarov@redhat.com>
+
+ PR target/84014
+ * gcc.target/powerpc/pr84014.c: New.
+
2018-01-24 Jakub Jelinek <jakub@redhat.com>
PR middle-end/83977
Index: ira-build.c
===================================================================
--- ira-build.c (revision 256891)
+++ ira-build.c (working copy)
@@ -2728,7 +2728,13 @@ setup_min_max_allocno_live_range_point (
ira_object_t parent_obj;
if (OBJECT_MAX (obj) < 0)
- continue;
+ {
+ /* The object is not used and hence does not live. */
+ ira_assert (OBJECT_LIVE_RANGES (obj) == NULL);
+ OBJECT_MAX (obj) = 0;
+ OBJECT_MIN (obj) = 1;
+ continue;
+ }
ira_assert (ALLOCNO_CAP_MEMBER (a) == NULL);
/* Accumulation of range info. */
if (ALLOCNO_CAP (a) != NULL)
Index: testsuite/gcc.target/powerpc/pr84014.c
===================================================================
--- testsuite/gcc.target/powerpc/pr84014.c (nonexistent)
+++ testsuite/gcc.target/powerpc/pr84014.c (working copy)
@@ -0,0 +1,20 @@
+/* { dg-do compile { target powerpc*-*-* } }*/
+/* { dg-options "-O1 -fno-split-wide-types -m32 -mcpu=e300c3" } */
+
+int
+nh (void)
+{
+}
+
+long long int
+si (void)
+{
+}
+
+int
+xf (int fg)
+{
+ int y5 = nh ();
+ fg += !!y5 ? y5 : si ();
+ return fg;
+}