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authorRichard Sandiford <richard@codesourcery.com>2006-10-07 09:22:20 +0000
committerRichard Sandiford <rsandifo@gcc.gnu.org>2006-10-07 09:22:20 +0000
commit0c391506fc08301dc1d9b09563501071e3915a8f (patch)
tree0cce2ba10f4038ad464a20ba75101d60ffacb8d1 /gcc
parent55ce980dc27b2fef4af65a4ec92b37c229585a82 (diff)
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debug-1.c: Use -fno-if-conversion MIPS targets.
gcc/testsuite/ * gcc.dg/debug/debug-1.c: Use -fno-if-conversion MIPS targets. * gcc.dg/debug/debug-2.c: Likewise. From-SVN: r117530
Diffstat (limited to 'gcc')
-rw-r--r--gcc/testsuite/ChangeLog5
-rw-r--r--gcc/testsuite/gcc.dg/debug/debug-1.c18
-rw-r--r--gcc/testsuite/gcc.dg/debug/debug-2.c2
3 files changed, 25 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 6086827..83be965 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2006-10-07 Richard Sandiford <richard@codesourcery.com>
+
+ * gcc.dg/debug/debug-1.c: Use -fno-if-conversion MIPS targets.
+ * gcc.dg/debug/debug-2.c: Likewise.
+
2006-10-06 Uros Bizjak <uros@kss-loka.si>
* gcc.c-torture/compile/sync-2.c: New test.
diff --git a/gcc/testsuite/gcc.dg/debug/debug-1.c b/gcc/testsuite/gcc.dg/debug/debug-1.c
index 8cc520d..35b5c91 100644
--- a/gcc/testsuite/gcc.dg/debug/debug-1.c
+++ b/gcc/testsuite/gcc.dg/debug/debug-1.c
@@ -1,6 +1,24 @@
/* Verify that the scheduler does not discard the lexical block. */
/* { dg-do compile } */
/* { dg-options "-dA" } */
+/* On MIPS targets that support conditional moves, the optimal
+ implementation of this function is:
+
+ l[wd] tmp,p
+ li $2,2
+ jr $31
+ movz $2,$0,tmp
+
+ After if-conversion, we have a conditional move into a pseudo P
+ followed a copy of P into the return register ($2). P is associated
+ with xyzzy, so if-conversion is behaving as expected, and has not lost
+ the variable association. The destination of the second instruction
+ is associated with the function return value. Combine then combines
+ these two instructions, removing the last use of P and xyzzy.
+
+ Everything is behaving as expected in this scenario, so we avoid
+ using conditional moves for this test. */
+/* { dg-options "-dA -fno-if-conversion" { target mips*-*-* } } */
/* { dg-final { scan-assembler "xyzzy" } } */
long p;
diff --git a/gcc/testsuite/gcc.dg/debug/debug-2.c b/gcc/testsuite/gcc.dg/debug/debug-2.c
index b164ff9..1e86f2f 100644
--- a/gcc/testsuite/gcc.dg/debug/debug-2.c
+++ b/gcc/testsuite/gcc.dg/debug/debug-2.c
@@ -1,6 +1,8 @@
/* Verify that the scheduler does not discard the lexical block. */
/* { dg-do compile } */
/* { dg-options "-dA" } */
+/* See the comment in debug-1.c. */
+/* { dg-options "-dA -fno-if-conversion" { target mips*-*-* } } */
/* { dg-final { scan-assembler "xyzzy" } } */
long p;