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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-15.c | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-15.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-15.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-15.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-15.c new file mode 100644 index 000000000..aaf57126a --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-15.c @@ -0,0 +1,49 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fdump-tree-optimized" } */ + +/* Check that the initial values are honored when necessary. */ + +void link_error (void); + +/* The call to link_error cannot be eliminated in this case. */ + +void test1 (int param1, int param2, int x) +{ + if (param1) + x = 3; + + if (param2) + if (x != 3) + link_error (); +} + +/* The call to link_error cannot be eliminated in this case. */ + +int global; +void test2 (int param1, int param2) +{ + if (param1) + global = 3; + + if (param2) + if (global != 3) + link_error (); +} + +/* In this case, we can eliminate the call, as unless "local" is set + to 3, its value is undefined. */ + +void test3 (int param1, int param2) +{ + int local; + + if (param1) + local = 3; + + if (param2) + if (local != 3) + link_error (); +} + +/* { dg-final { scan-tree-dump-times "link_error" 2 "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |