[PATCH, testsuite] Add loop unrolling command line options for some test cases

[Jiangning Liu]

Hi,

The following test cases are to check predictive commoning optimization by
detecting loop unrolling times. Originally by default the max-unroll-times
is 8. If max-unroll-times is specified to be less than the expected
unrolling times, those cases would fail. 

The fix is to explicitly turn on loop unroll and set max-unroll-times to 8,
which is larger than the unrolling times being detected in the cases.

ChangeLog:

2011-09-14  Jiangning Liu  <jiangning....@arm.com>

        * gcc/testsuite/gcc.dg/tree-ssa/predcom-1.c: Explicitly turn on 
        loop unroll and set max unroll times to 8.
        * gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c: Likewise.
        * gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c: Likewise.
        * gcc/testsuite/gcc.dg/tree-ssa/predcom-4.c: Likewise.
        * gcc/testsuite/gcc.dg/tree-ssa/predcom-5.c: Likewise.

Thanks,
-Jiangning

diff --git a/gcc/testsuite/gcc.dg/tree-ssa/predcom-1.c
b/gcc/testsuite/gcc.dg/tree-ssa/predcom-1.c
index 16bd5c9..f1e52e5 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/predcom-1.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/predcom-1.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
 /* { dg-do run } */
-/* { dg-options "-O2 -fpredictive-commoning -fdump-tree-pcom-details" } */
+/* { dg-options "-O2 -funroll-loops --param max-unroll-times=8
-fpredictive-commoning -fdump-tree-pcom-details" } */
 
 void abort (void);
 
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
b/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
index 7275f28..27e53ee 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
 /* { dg-do run } */
-/* { dg-options "-O2 -fpredictive-commoning -fdump-tree-pcom-details" } */
+/* { dg-options "-O2 -funroll-loops --param max-unroll-times=8
-fpredictive-commoning -fdump-tree-pcom-details" } */
 
 void abort (void);
 
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c
b/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c
index d500234..5dfe384 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O2 -fpredictive-commoning -fdump-tree-pcom-details" } */
+/* { dg-options "-O2 -funroll-loops --param max-unroll-times=8
-fpredictive-commoning -fdump-tree-pcom-details" } */
 
 int a[1000], b[1000];
 
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/predcom-4.c
b/gcc/testsuite/gcc.dg/tree-ssa/predcom-4.c
index 6f06b7f..c29a46a 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/predcom-4.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/predcom-4.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
 /* { dg-do run } */
-/* { dg-options "-O2 -fpredictive-commoning -fdump-tree-pcom-details" } */
+/* { dg-options "-O2 -funroll-loops --param max-unroll-times=8
-fpredictive-commoning -fdump-tree-pcom-details" } */
 
 /* Test for predictive commoning of expressions, without reassociation.  */
 
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/predcom-5.c
b/gcc/testsuite/gcc.dg/tree-ssa/predcom-5.c
index 134fc37..29444ab 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/predcom-5.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/predcom-5.c
@@ -1,6 +1,6 @@
 /* { dg-do compile } */
 /* { dg-do run } */
-/* { dg-options "-O2 -fpredictive-commoning -fdump-tree-pcom-details" } */
+/* { dg-options "-O2 -funroll-loops --param max-unroll-times=8
-fpredictive-commoning -fdump-tree-pcom-details" } */
 
 /* Test for predictive commoning of expressions, with reassociation.  */