diff options
Diffstat (limited to 'test/codegen')
| -rw-r--r-- | test/codegen/arithmetic.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/codegen/arithmetic.go b/test/codegen/arithmetic.go index b5976be9d2..535e3349fc 100644 --- a/test/codegen/arithmetic.go +++ b/test/codegen/arithmetic.go @@ -185,6 +185,17 @@ func Pow2Mods(n1 uint, n2 int) (uint, int) { return a, b } +// Check that signed divisibility checks get converted to AND on low bits +func Pow2DivisibleSigned(n int) bool { + // 386:"TESTL\t[$]63",-"DIVL" + // amd64:"TESTQ\t[$]63",-"DIVQ" + // arm:"AND\t[$]63",-".*udiv" + // arm64:"AND\t[$]63",-"UDIV" + // ppc64:"ANDCC\t[$]63" + // ppc64le:"ANDCC\t[$]63" + return n%64 == 0 // signed +} + // Check that constant modulo divs get turned into MULs func ConstMods(n1 uint, n2 int) (uint, int) { // amd64:"MOVQ\t[$]-1085102592571150095","MULQ",-"DIVQ" |