From: Tom de Vries <tom@codesourcery.com>
Date: Fri, 25 Apr 2014 11:21:29 +0000 (+0000)
Subject: Register CALL_INSN_FUNCTION_USAGE in find_all_hard_reg_sets
X-Git-Tag: releases/gcc-5.1.0~7915
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3ee634fd7b20399a1470db1a1e18d423ab761cf7;p=thirdparty%2Fgcc.git

Register CALL_INSN_FUNCTION_USAGE in find_all_hard_reg_sets

2014-04-25  Tom de Vries  <tom@codesourcery.com>

	* rtlanal.c (find_all_hard_reg_sets): Note INSN_CALL_FUNCTION_USAGE
	clobbers.

From-SVN: r209799
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 4a0af82d9b47..21f9b2f2a997 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-04-25  Tom de Vries  <tom@codesourcery.com>
+
+	* rtlanal.c (find_all_hard_reg_sets): Note INSN_CALL_FUNCTION_USAGE
+	clobbers.
+
 2014-04-25  Radovan Obradovic  <robradovic@mips.com>
             Tom de Vries  <tom@codesourcery.com>
 
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c
index 284c4752673e..f3471b1bcb64 100644
--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -1052,8 +1052,14 @@ find_all_hard_reg_sets (const_rtx insn, HARD_REG_SET *pset, bool implicit)
 
   CLEAR_HARD_REG_SET (*pset);
   note_stores (PATTERN (insn), record_hard_reg_sets, pset);
-  if (implicit && CALL_P (insn))
-    IOR_HARD_REG_SET (*pset, call_used_reg_set);
+  if (CALL_P (insn))
+    {
+      if (implicit)
+	IOR_HARD_REG_SET (*pset, call_used_reg_set);
+
+      for (link = CALL_INSN_FUNCTION_USAGE (insn); link; link = XEXP (link, 1))
+	record_hard_reg_sets (XEXP (link, 0), NULL, pset);
+    }
   for (link = REG_NOTES (insn); link; link = XEXP (link, 1))
     if (REG_NOTE_KIND (link) == REG_INC)
       record_hard_reg_sets (XEXP (link, 0), NULL, pset);