The following patch fixes
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57189
The patch was successfully bootstrapped and tested on x86-64.
Committed as rev. 208549.
2014-03-13 Vladimir Makarov <vmaka...@redhat.com>
PR rtl-optimization/57189
* lra-constraints.c (process_alt_operands): Disfavor spilling
vector pseudos.
2014-03-13 Vladimir Makarov <vmaka...@redhat.com>
PR rtl-optimization/57189
* gcc.target/i386/pr57189.c: New.
--- a/gcc/lra-constraints.c
+++ b/gcc/lra-constraints.c
@@ -2302,9 +2302,20 @@ process_alt_operands (int only_alternative)
if (lra_dump_file != NULL)
fprintf
(lra_dump_file,
- " %d Spill pseudo in memory: reject+=3\n",
+ " %d Spill pseudo into memory: reject+=3\n",
nop);
reject += 3;
+ if (VECTOR_MODE_P (mode))
+ {
+ /* Spilling vectors into memory is usually more
+ costly as they contain big values. */
+ if (lra_dump_file != NULL)
+ fprintf
+ (lra_dump_file,
+ " %d Spill vector pseudo: reject+=2\n",
+ nop);
+ reject += 2;
+ }
}
#ifdef SECONDARY_MEMORY_NEEDED
diff --git a/gcc/testsuite/gcc.target/i386/pr57189.c b/gcc/testsuite/gcc.target/i386/pr57189.c
new file mode 100644
index 0000000..389052c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr57189.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -msse2 -march=k8" } */
+/* { dg-final { scan-assembler-not "movaps" } } */
+
+typedef int __v4si __attribute__ ((__vector_size__ (16)));
+
+int test (__v4si __A)
+{
+ return __builtin_ia32_vec_ext_v4si (__A, 0);
+}
