From 1bc5aee63eb72b341f506ad058502cd0361f0d10 Mon Sep 17 00:00:00 2001 From: Ben Cheng Date: Tue, 25 Mar 2014 22:37:19 -0700 Subject: Initial checkin of GCC 4.9.0 from trunk (r208799). Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba --- gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c') diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c new file mode 100644 index 000000000..261880cc2 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-dce-4.c @@ -0,0 +1,20 @@ +/* { dg-do compile } */ +/* { dg-options "-O -fno-tree-fre -fdump-tree-cddce1" } */ + +int foo(int b) +{ + int a[128]; + a[b] = 1; + if (b) + { + b = 2; + a[2] = 0; + } + a[2] = 3; + return a[2] + b; +} + +/* Verify DCE removes all accesses to a but the last store and the + read from a[2]. */ +/* { dg-final { scan-tree-dump-times "a\\\[\[^\n\]\\\]" 2 "cddce1" } } */ +/* { dg-final { cleanup-tree-dump "cddce1" } } */ -- cgit v1.2.3