Revert "cmd/compile: automatically handle commuting ops in rewrite rules"

This reverts commit 041ecb697f0e867a2bb0bf219cc2fd5f77057c2e.

Reason for revert: Not working on S390x and some 386 archs.
I have a guess why the S390x is failing.  No clue on the 386 yet.
Revert until I can figure it out.

Change-Id: I64f1ce78fa6d1037ebe7ee2a8a8107cb4c1db70c
Reviewed-on: https://go-review.googlesource.com/38790
Reviewed-by: Keith Randall <khr@golang.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/cmd/compile/internal/ssa/rewritedec.go b/src/cmd/compile/internal/ssa/rewritedec.go
index 2be17ef459..2782316c7e 100644
--- a/src/cmd/compile/internal/ssa/rewritedec.go
+++ b/src/cmd/compile/internal/ssa/rewritedec.go
@@ -34,7 +34,7 @@ func rewriteValuedec(v *Value) bool {
 	return false
 }
 func rewriteValuedec_OpComplexImag(v *Value) bool {
-	// match: (ComplexImag (ComplexMake _ imag))
+	// match: (ComplexImag (ComplexMake _ imag ))
 	// cond:
 	// result: imag
 	for {
@@ -51,7 +51,7 @@ func rewriteValuedec_OpComplexImag(v *Value) bool {
 	return false
 }
 func rewriteValuedec_OpComplexReal(v *Value) bool {
-	// match: (ComplexReal (ComplexMake real _))
+	// match: (ComplexReal (ComplexMake real _  ))
 	// cond:
 	// result: real
 	for {
@@ -274,7 +274,7 @@ func rewriteValuedec_OpSliceLen(v *Value) bool {
 	return false
 }
 func rewriteValuedec_OpSlicePtr(v *Value) bool {
-	// match: (SlicePtr (SliceMake ptr _ _))
+	// match: (SlicePtr (SliceMake ptr _ _ ))
 	// cond:
 	// result: ptr
 	for {