Viewing file:  vrp47.c (1.14 KB) -rw-r--r--
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/* Setting LOGICAL_OP_NON_SHORT_CIRCUIT to 0 inhibits the setcc
optimizations that expose the VRP opportunity. */
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-vrp1 -fdump-tree-dom2 -fdump-tree-vrp2 --param logical-op-non-short-circuit=1" } */
/* { dg-additional-options "-march=i586" { target { { i?86-*-* x86_64-*-* } && ia32 } } } */
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" } } */
/* These two are fully simplified by VRP1. */
/* { dg-final { scan-tree-dump-times "x\[^ \]* \[|\] y" 1 "vrp1" } } */
/* { dg-final { scan-tree-dump-times "x\[^ \]* \\^ 1" 1 "vrp1" } } */
/* VRP2 gets rid of the remaining & 1 operations, x and y are always
either 0 or 1. */
/* { dg-final { scan-tree-dump-times " & 1;" 0 "vrp2" } } */
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