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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/tree-ssa/vrp47.c | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/vrp47.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/vrp47.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp47.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp47.c new file mode 100644 index 000000000..3def90c4c --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp47.c @@ -0,0 +1,48 @@ +/* Skip on MIPS, where LOGICAL_OP_NON_SHORT_CIRCUIT inhibits the setcc + optimizations that expose the VRP opportunity. */ +/* Skip on S/390 and avr. Lower values in BRANCH_COST lead to two conditional + jumps when evaluating an && condition. VRP is not able to optimize + this. */ +/* { dg-do compile { target { ! "mips*-*-* s390*-*-* avr-*-* mn10300-*-*" } } } */ +/* { dg-options "-O2 -fdump-tree-vrp -fdump-tree-dom" } */ +/* { dg-options "-O2 -fdump-tree-vrp -fdump-tree-dom -march=i586" { target { i?86-*-* && ilp32 } } } */ + +int h(int x, int y) +{ + if ((x >= 0 && x <= 1) && (y >= 0 && y <= 1)) + return x && y; + else + return -1; +} + +int g(int x, int y) +{ + if ((x >= 0 && x <= 1) && (y >= 0 && y <= 1)) + return x || y; + else + return -1; +} + +int f(int x) +{ + if (x != 0 && x != 1) + return -2; + + else + return !x; +} + +/* Test that x and y are never compared to 0 -- they're always known to be + 0 or 1. */ +/* { dg-final { scan-tree-dump-times "\[xy\]\[^ \]* !=" 0 "vrp1" } } */ + +/* This one needs more copy propagation that only happens in dom1. */ +/* { dg-final { scan-tree-dump-times "x\[^ \]* & y" 1 "dom1" } } */ +/* { dg-final { scan-tree-dump-times "x\[^ \]* & y" 1 "vrp1" { xfail *-*-* } } } */ + +/* These two are fully simplified by VRP. */ +/* { dg-final { scan-tree-dump-times "x\[^ \]* \[|\] y" 1 "vrp1" } } */ +/* { dg-final { scan-tree-dump-times "x\[^ \]* \\^ 1" 1 "vrp1" } } */ + +/* { dg-final { cleanup-tree-dump "vrp\[0-9\]" } } */ +/* { dg-final { cleanup-tree-dump "dom\[0-9\]" } } */ |