diff options
Diffstat (limited to 'src/cmd/internal/obj')
| -rw-r--r-- | src/cmd/internal/obj/arm/asm5.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/cmd/internal/obj/arm/asm5.go b/src/cmd/internal/obj/arm/asm5.go index 24b9bdd980..9731bd4151 100644 --- a/src/cmd/internal/obj/arm/asm5.go +++ b/src/cmd/internal/obj/arm/asm5.go @@ -1099,6 +1099,14 @@ func (c *ctxt5) oplook(p *obj.Prog) *Optab { fmt.Printf("\t\t%d %d\n", p.From.Type, p.To.Type) } + if (p.As == ASRL || p.As == ASRA) && p.From.Type == obj.TYPE_CONST && p.From.Offset == 0 { + // Right shifts are weird - a shift that looks like "shift by constant 0" actually + // means "shift by constant 32". Use left shift in this situation instead. + // See issue 64715. + // TODO: rotate by 0? Not currently supported, but if we ever do then include it here. + p.As = ASLL + } + ops := oprange[p.As&obj.AMask] c1 := &xcmp[a1] c3 := &xcmp[a3] |