Revert "cmd/compile: add signed divisibility by power of 2 rules"

This reverts CL 168038 (git 68819fb6d2bab59e4eadcdf62aa4a2a54417d640)

Reason for revert: Doesn't work on 32 bit archs.

Change-Id: Idec9098060dc65bc2f774c5383f0477f8eb63a3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/173442
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

1 files changed, 0 insertions, 26 deletions

diff --git a/src/cmd/compile/internal/test/divconst_test.go b/src/cmd/compile/internal/test/divconst_test.go
index 6b0bc4a6fb..f585a5b51f 100644
--- a/src/cmd/compile/internal/test/divconst_test.go
+++ b/src/cmd/compile/internal/test/divconst_test.go
@@ -8,8 +8,6 @@ import (
 	"testing"
 )
 
-var boolres bool
-
 var i64res int64
 
 func BenchmarkDivconstI64(b *testing.B) {
@@ -18,12 +16,6 @@ func BenchmarkDivconstI64(b *testing.B) {
 	}
 }
 
-func BenchmarkDivisiblePow2constI64(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		boolres = int64(i)%16 == 0
-	}
-}
-
 var u64res uint64
 
 func BenchmarkDivconstU64(b *testing.B) {
@@ -40,12 +32,6 @@ func BenchmarkDivconstI32(b *testing.B) {
 	}
 }
 
-func BenchmarkDivisiblePow2constI32(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		boolres = int32(i)%16 == 0
-	}
-}
-
 var u32res uint32
 
 func BenchmarkDivconstU32(b *testing.B) {
@@ -62,12 +48,6 @@ func BenchmarkDivconstI16(b *testing.B) {
 	}
 }
 
-func BenchmarkDivisiblePow2constI16(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		boolres = int16(i)%16 == 0
-	}
-}
-
 var u16res uint16
 
 func BenchmarkDivconstU16(b *testing.B) {
@@ -84,12 +64,6 @@ func BenchmarkDivconstI8(b *testing.B) {
 	}
 }
 
-func BenchmarkDivisiblePow2constI8(b *testing.B) {
-	for i := 0; i < b.N; i++ {
-		boolres = int8(i)%16 == 0
-	}
-}
-
 var u8res uint8
 
 func BenchmarkDivconstU8(b *testing.B) {