test/codegen: port math/bits.TrailingZeros tests to codegen

And remove them from ssa_test.

Change-Id: Ib5de5c0d908f23915e0847eca338cacf2fa5325b
Reviewed-on: https://go-review.googlesource.com/98795
Reviewed-by: Giovanni Bajo <rasky@develer.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/test/codegen/mathbits.go b/test/codegen/mathbits.go
index 98ee8f2a0b..f930046a3b 100644
--- a/test/codegen/mathbits.go
+++ b/test/codegen/mathbits.go
@@ -95,3 +95,37 @@ func Len8(n uint8) int {
 	//mips:"CLZ"
 	return bits.Len8(n)
 }
+
+// ------------------------ //
+//    bits.TrailingZeros    //
+// ------------------------ //
+
+func TrailingZeros(n uint) int {
+	//amd64:"BSFQ","MOVL\t\\$64","CMOVQEQ"
+	//s390x:"FLOGR"
+	return bits.TrailingZeros(n)
+}
+
+func TrailingZeros64(n uint64) int {
+	//amd64:"BSFQ","MOVL\t\\$64","CMOVQEQ"
+	//s390x:"FLOGR"
+	return bits.TrailingZeros64(n)
+}
+
+func TrailingZeros32(n uint32) int {
+	//amd64:"MOVQ\t\\$4294967296","ORQ\t[^$]","BSFQ"
+	//s390x:"FLOGR","MOVWZ"
+	return bits.TrailingZeros32(n)
+}
+
+func TrailingZeros16(n uint16) int {
+	//amd64:"BSFQ","ORQ\t\\$65536"
+	//s390x:"FLOGR","OR\t\\$65536"
+	return bits.TrailingZeros16(n)
+}
+
+func TrailingZeros8(n uint8) int {
+	//amd64:"BSFQ","ORQ\t\\$256"
+	//s390x:"FLOGR","OR\t\\$256"
+	return bits.TrailingZeros8(n)
+}