patch to fix PR85860

Message ID d7dfbadd-0d96-d826-f233-139f60baa23a@redhat.com
State New
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Series
  • patch to fix PR85860
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Commit Message

Vladimir Makarov March 13, 2019, 8:47 p.m.
The following patch fixes

   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85860

The patch was successfully bootstrapped and tested on x86-64.

Committed as rev. 269662 to trunk and as rev. 269663 to gcc-8-branch.

Patch

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 269661)
+++ ChangeLog	(working copy)
@@ -1,3 +1,9 @@ 
+2019-03-13  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/85860
+	* lra-constraints.c (inherit_in_ebb): Update
+	potential_reload_hard_regs along with live_hard_regs.
+
 2019-03-13  Jakub Jelinek  <jakub@redhat.com>
 
 	PR debug/89498
Index: lra-constraints.c
===================================================================
--- lra-constraints.c	(revision 269651)
+++ lra-constraints.c	(working copy)
@@ -6365,6 +6365,7 @@  inherit_in_ebb (rtx_insn *head, rtx_insn
 			add_to_hard_reg_set (&s, PSEUDO_REGNO_MODE (dst_regno),
 					     reg_renumber[dst_regno]);
 		      AND_COMPL_HARD_REG_SET (live_hard_regs, s);
+		      AND_COMPL_HARD_REG_SET (potential_reload_hard_regs, s);
 		    }
 		  /* We should invalidate potential inheritance or
 		     splitting for the current insn usages to the next
Index: testsuite/ChangeLog
===================================================================
--- testsuite/ChangeLog	(revision 269661)
+++ testsuite/ChangeLog	(working copy)
@@ -1,3 +1,8 @@ 
+2019-03-13  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/85860
+	* gcc.target/i386/pr85860.c: New.
+
 2019-03-13  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/89686 - mixing init-capture and simple-capture in lambda.
Index: testsuite/gcc.target/i386/pr85860.c
===================================================================
--- testsuite/gcc.target/i386/pr85860.c	(nonexistent)
+++ testsuite/gcc.target/i386/pr85860.c	(working copy)
@@ -0,0 +1,23 @@ 
+/* { dg-do compile { target lp64 } } */
+/* { dg-options "-O2 -fno-guess-branch-probability -flive-range-shrinkage -mbmi2" } */
+
+int a, b, c, d, e;
+
+extern int bar(void);
+
+__int128
+foo (unsigned g, int h, long i, __int128 j, short k, __int128 l)
+{
+  unsigned __int128 m = j;
+  do
+    {
+      j %= 5;
+      c = c >> (m & 31);
+      e = __builtin_sub_overflow (b, 0, &m);
+      d = bar ();
+      l *= __builtin_mul_overflow_p ((unsigned) d, ~(unsigned __int128) 1,
+				     (unsigned __int128) 0);
+    }
+  while (a);
+  return m + j + k + l;
+}