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-pre-2.c | 24 +++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c') diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c new file mode 100644 index 000000000..311f12781 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-2.c @@ -0,0 +1,24 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-pre-stats" } */ +int motion_test1(int data, int data_0, int data_3, int v) +{ + int i; + int t, u; + + if (data) + i = data_0 + data_3; + else { + v = 2; + i = 5; + } + t = data_0 + data_3; + u = i; + return v * t * u; +} +/* We should eliminate one computation of data_0 + data_3 along the + main path. We cannot re-associate v * t * u due to undefined + signed overflow so we do not eliminate one computation of v * i along + the main path. */ +/* { dg-final { scan-tree-dump-times "Eliminated: 2" 1 "pre" { xfail *-*-* } } } */ +/* { dg-final { scan-tree-dump-times "Eliminated: 1" 1 "pre" } } */ +/* { dg-final { cleanup-tree-dump "pre" } } */ -- cgit v1.2.3