wazevo(regalloc): set reg usage flag in swaps (#1842)

Signed-off-by: Takeshi Yoneda <[email protected]>
tetratelabs · Nov 20, 2023 · 4f6d214 · 4f6d214
1 parent f673e81
commit 4f6d214
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/internal/engine/wazevo/backend/regalloc/regalloc.go b/internal/engine/wazevo/backend/regalloc/regalloc.go
@@ -838,6 +838,7 @@ func (a *Allocator) reconcileEdge(f Function,
 			freeReg,
 			pred,
 		)
+		s.allocatedRegSet = s.allocatedRegSet.add(freeReg.RealReg())
 		currentOccupantsRev[desiredVReg] = r
 		currentOccupantsRev[currentVReg] = er
 		currentOccupants.add(r, desiredVReg)