cmd/compile: when combining stores, use line number of first store

[gostls13.git] / src / cmd / compile / internal / ssa / _gen / AMD64.rules

diff --git a/src/cmd/compile/internal/ssa/_gen/AMD64.rules b/src/cmd/compile/internal/ssa/_gen/AMD64.rules
index 7840600ef6f44208a1bb68d9217cd4f4f177668a..aac6873d2888e4c60ce2c54e2360a304ed473a08 100644 (file)
--- a/src/cmd/compile/internal/ssa/_gen/AMD64.rules
+++ b/src/cmd/compile/internal/ssa/_gen/AMD64.rules
@@ -1468,6 +1468,7 @@
   && sequentialAddresses(p0, p1, int64(a.Off()+8-c.Off()))
   && a.Val() == 0
   && c.Val() == 0
+  && setPos(v, x.Pos)
   && clobber(x)
   => (MOVOstoreconst [makeValAndOff(0,a.Off())] {s} p0 mem)
 (MOVQstoreconst [a] {s} p0 x:(MOVQstoreconst [c] {s} p1 mem))
@@ -1476,6 +1477,7 @@
   && sequentialAddresses(p0, p1, int64(a.Off()+8-c.Off()))
   && a.Val() == 0
   && c.Val() == 0
+  && setPos(v, x.Pos)
   && clobber(x)
   => (MOVOstoreconst [makeValAndOff(0,a.Off())] {s} p0 mem)