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cmd/compile: make math/bits.RotateLeft{32,64} intrinsics on s390x

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Extends CL 132435 to s390x. s390x has 32- and 64-bit variable
rotate left instructions.

Change-Id: Ic4f1ebb0e0543207ed2fc8c119e0163b428138a5
Reviewed-on: https://go-review.googlesource.com/133035
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit is contained in:
Michael Munday
2018-09-03 10:47:58 -04:00
parent 0e9f1de0b7
commit f94de9c9fb
7 changed files with 141 additions and 4 deletions
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23
test/codegen/mathbits.go
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@@ -171,6 +171,7 @@ func RotateLeft64(n uint64) uint64 {
// amd64:"ROLQ"
// arm64:"ROR"
// ppc64:"ROTL"
// s390x:"RLLG"
return bits.RotateLeft64(n, 37)
}
@@ -178,6 +179,7 @@ func RotateLeft32(n uint32) uint32 {
// amd64:"ROLL" 386:"ROLL"
// arm64:"RORW"
// ppc64:"ROTLW"
// s390x:"RLL"
return bits.RotateLeft32(n, 9)
}
@@ -191,6 +193,27 @@ func RotateLeft8(n uint8) uint8 {
return bits.RotateLeft8(n, 5)
}
func RotateLeftVariable(n uint, m int) uint {
// amd64:"ROLQ"
// ppc64:"ROTL"
// s390x:"RLLG"
return bits.RotateLeft(n, m)
}
func RotateLeftVariable64(n uint64, m int) uint64 {
// amd64:"ROLQ"
// ppc64:"ROTL"
// s390x:"RLLG"
return bits.RotateLeft64(n, m)
}
func RotateLeftVariable32(n uint32, m int) uint32 {
// amd64:"ROLL"
// ppc64:"ROTLW"
// s390x:"RLL"
return bits.RotateLeft32(n, m)
}
// ------------------------ //
// bits.TrailingZeros //
// ------------------------ //