PR rtl-optimization/60851

	* recog.c (constrain_operands): Accept a pseudo register before reload
	for LRA enabled targets.

testsuite/ChangeLog:

	PR rtl-optimization/60851
	* gcc.target/i386/pr60851.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@221529 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2b9f9d0..30d6a5e 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-03-20  Uros Bizjak  <ubizjak@gmail.com>
+
+       PR rtl-optimization/60851
+       * recog.c (constrain_operands): Accept a pseudo register before reload
+       for LRA enabled targets.
+
 2015-03-19  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
        PR target/65240

diff --git a/gcc/recog.c b/gcc/recog.c
index 7b5ca8b..a9d3b1f 100644 (file)
--- a/gcc/recog.c
+++ b/gcc/recog.c
@@ -2773,8 +2773,12 @@ constrain_operands (int strict, alternative_mask alternatives)
                           /* Every memory operand can be reloaded to fit.  */
                           && ((strict < 0 && MEM_P (op))
                               /* Before reload, accept what reload can turn
-                                 into mem.  */
+                                 into a mem.  */
                               || (strict < 0 && CONSTANT_P (op))
+                              /* Before reload, accept a pseudo,
+                                 since LRA can turn it into a mem.  */
+                              || (strict < 0 && targetm.lra_p () && REG_P (op)
+                                  && REGNO (op) >= FIRST_PSEUDO_REGISTER)
                               /* During reload, accept a pseudo  */
                               || (reload_in_progress && REG_P (op)
                                   && REGNO (op) >= FIRST_PSEUDO_REGISTER)))

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 3cf6e02..7764900 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,4 +1,9 @@
-2015-03-17  Michael Meissner  <meissner@linux.vnet.ibm.com>
+2015-03-20  Uros Bizjak  <ubizjak@gmail.com>
+
+       PR rtl-optimization/60851
+       * gcc.target/i386/pr60851.c: New test.
+
+2015-03-19  Michael Meissner  <meissner@linux.vnet.ibm.com>
 
        PR target/65240
        * gcc/testsuite/g++.dg/pr65240.h: Add tests for PR 65240.

diff --git a/gcc/testsuite/gcc.target/i386/pr60851.c b/gcc/testsuite/gcc.target/i386/pr60851.c
new file mode 100644 (file)
index 0000000..3b8d35d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr60851.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -flive-range-shrinkage -mtune=bdver4 -mdispatch-scheduler" } */
+
+long double ld (char c)
+{
+  return c;
+}