Clear hard frame pointer alignment if not needed

When hard frame pointer isn't needed, the register for hard frame pointer
may be reused.  This patch clears alignment on hard frame pointer if hard
frame pointer isn't needed.

gcc/

	PR rtl-optimization/64905
	* lra-eliminations.c (setup_can_eliminate): Clear hard frame
	pointer alignment if it isn't needed.

gcc/testsuite/

	PR rtl-optimization/64905
	* gcc.target/i386/pr64905.c: New file.

From-SVN: r220414

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2507b892ee35296f4130d5b78f4ddded0dd45c5f..f724d54539bec2bbf006a39c8cc7b8fd4f8d0702 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-02-04  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR rtl-optimization/64905
+       * lra-eliminations.c (setup_can_eliminate): Clear hard frame
+       pointer alignment if it isn't needed.
+
 2015-02-04  Matthew Wahab  <matthew.wahab@arm.com>
 
        * config/aarch64/aarch64-cores.def: Add cortex-a72 and

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 6b10ca54a9bbc421c959c34e1eee16b52e29bc10..ef6201751bdfa7d06bd62b05da1ad4c14b382fe0 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2015-02-04  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR rtl-optimization/64905
+       * gcc.target/i386/pr64905.c: New file.
+
 2015-02-04  Segher Boessenkool  <segher@kernel.crashing.org>
 
        * gcc.dg/guality/pr41447-1.c: Remove xfail.