cmd/internal/obj/arm64: remove spurious assignments with OR

Use = rather than |= when assigning to an op variable.

Change-Id: I142c9fb3aa6f4b48875710100c05ab640e21933a
Reviewed-on: https://go-review.googlesource.com/c/go/+/461135
Reviewed-by: Eric Fang <eric.fang@arm.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>

diff --git a/src/cmd/internal/obj/arm64/asm7.go b/src/cmd/internal/obj/arm64/asm7.go
index b01ebb0928d1ea5cb2210f93825c8a9224b696bb..1040492308fb45e5cc465592e4aef52253e3016c 100644 (file)
--- a/src/cmd/internal/obj/arm64/asm7.go
+++ b/src/cmd/internal/obj/arm64/asm7.go
@@ -4513,7 +4513,7 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
                if r == obj.REG_NONE {
                        c.ctxt.Diag("invalid ldp source: %v\n", p)
                }
-               o1 |= c.opldpstp(p, o, v, uint32(r), uint32(p.To.Reg), uint32(p.To.Offset), 1)
+               o1 = c.opldpstp(p, o, v, uint32(r), uint32(p.To.Reg), uint32(p.To.Offset), 1)
 
        case 67: /* stp (r1, r2), O(R)!; stp (r1, r2), (R)O! */
                r := int(p.To.Reg)
@@ -4707,7 +4707,7 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
                        }
                        o1 = c.oaddi(p, int32(c.opirr(p, ASUB)), -v, r, REGTMP)
                }
-               o2 |= c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.To.Reg), uint32(p.To.Offset), 1)
+               o2 = c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.To.Reg), uint32(p.To.Offset), 1)
 
        case 75:
                //      mov $L, Rtmp (from constant pool)
@@ -4728,7 +4728,7 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
                o2 |= (REGTMP & 31) << 16
                o2 |= uint32(r&31) << 5
                o2 |= uint32(REGTMP & 31)
-               o3 |= c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.To.Reg), uint32(p.To.Offset), 1)
+               o3 = c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.To.Reg), uint32(p.To.Offset), 1)
 
        case 76:
                //      add $O, R, Rtmp or sub $O, R, Rtmp
@@ -4756,7 +4756,7 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
                        }
                        o1 = c.oaddi(p, int32(c.opirr(p, ASUB)), -v, r, REGTMP)
                }
-               o2 |= c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.From.Reg), uint32(p.From.Offset), 0)
+               o2 = c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.From.Reg), uint32(p.From.Offset), 0)
 
        case 77:
                //      mov $L, Rtmp (from constant pool)
@@ -4777,7 +4777,7 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
                o2 |= REGTMP & 31 << 16
                o2 |= uint32(r&31) << 5
                o2 |= uint32(REGTMP & 31)
-               o3 |= c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.From.Reg), uint32(p.From.Offset), 0)
+               o3 = c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.From.Reg), uint32(p.From.Offset), 0)
 
        case 78: /* vmov R, V.<T>[index] */
                rf := int(p.From.Reg)
@@ -5082,7 +5082,7 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
                rel.Sym = p.To.Sym
                rel.Add = p.To.Offset
                rel.Type = objabi.R_ADDRARM64
-               o3 |= c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.From.Reg), uint32(p.From.Offset), 0)
+               o3 = c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.From.Reg), uint32(p.From.Offset), 0)
 
        case 88: /* ldp addr(SB), (r,r) -> adrp + add + ldp */
                o1 = ADR(1, 0, REGTMP)
@@ -5093,7 +5093,7 @@ func (c *ctxt7) asmout(p *obj.Prog, o *Optab, out []uint32) {
                rel.Sym = p.From.Sym
                rel.Add = p.From.Offset
                rel.Type = objabi.R_ADDRARM64
-               o3 |= c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.To.Reg), uint32(p.To.Offset), 1)
+               o3 = c.opldpstp(p, o, 0, uint32(REGTMP), uint32(p.To.Reg), uint32(p.To.Offset), 1)
 
        case 89: /* vadd/vsub Vm, Vn, Vd */
                switch p.As {