From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/g++.dg/tree-ssa/pr19807.C | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 gcc/testsuite/g++.dg/tree-ssa/pr19807.C (limited to 'gcc/testsuite/g++.dg/tree-ssa/pr19807.C') diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr19807.C b/gcc/testsuite/g++.dg/tree-ssa/pr19807.C new file mode 100644 index 000000000..bba79a9d1 --- /dev/null +++ b/gcc/testsuite/g++.dg/tree-ssa/pr19807.C @@ -0,0 +1,30 @@ +/* { dg-do compile } */ +/* { dg-options "-O -fdump-tree-optimized" } */ + +int a[4]; +int *x, *y, *z; + +void foo(void) +{ + x = &a[3] - 1; + y = &a[1] + 1; + z = 1 + &a[1]; +} + +void bar(int i) +{ + x = &a[i] - 1; + y = &a[i] + 1; + z = 1 + &a[i]; +} + +/* { dg-final { scan-tree-dump-times "&a\\\[2\\\]" 3 "optimized" } } */ + +/* We want &a[D.bla + 1] and &a[D.foo - 1] in the final code, but + tuples mean that the offset is calculated in a separate instruction. + Simply test for the existence of +1 and -1 once, which also ensures + the above. If the addition/subtraction would be applied to the + pointer we would instead see +-4 (or 8, depending on sizeof(int)). */ +/* { dg-final { scan-tree-dump-times "\\\+ -1;" 1 "optimized" } } */ +/* { dg-final { scan-tree-dump-times "\\\+ 1;" 1 "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ -- cgit v1.2.3