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| author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
|---|---|---|
| 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/ivopt_mult_4.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/ivopt_mult_4.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ivopt_mult_4.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ivopt_mult_4.c b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ivopt_mult_4.c new file mode 100644 index 000000000..d2aa78d61 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/tree-ssa/ivopt_mult_4.c @@ -0,0 +1,25 @@ + +/* { dg-do compile { target {{ i?86-*-* x86_64-*-* } && lp64 } } } */ +/* { dg-options "-O2 -m64 -fdump-tree-ivopts-details" } */ + +/* iv i's step 16 so its period is smaller than the max iterations + * i.e. replacing if (p2 > p_limit2) with testing of i may result in + * overflow. */ +long foo(long* p, long* p2, int N1, int N2) +{ + unsigned long i = 0; + long* p_limit2 = p2 + N2; + long s = 0; + while (i < N1) + { + p2++; + i += 16; + if (p2 > p_limit2) + break; + s += p[i]; + } + return s; +} + +/* { dg-final { scan-tree-dump-times "Replacing" 0 "ivopts"} } */ +/* { dg-final { cleanup-tree-dump "ivopts" } } */ |