improve uxn sign extension code (thanks d_m)

MESYETI · MESYETI · commit 0b9ad3a39751 · 2025-05-27T22:27:47.000+01:00
diff --git a/source/backends/uxn.d b/source/backends/uxn.d
@@ -284,7 +284,7 @@ class BackendUXN : CompilerBackend {
 		}
 
 		if ((size == 1) && var.type.isSigned) {
-			output ~= "LIT2r 00ff DUP #80 AND ?{ SWPr } STHr POPr SWP\n";
+			output ~= "DUP #7f GTH #ff MUL SWP\n";
 		}
 		else if (size == 1) {
 			output ~= "#00 SWP\n";

Original file line number	Diff line number	Diff line change
`@@ -284,7 +284,7 @@ class BackendUXN : CompilerBackend {`
`284`	`284`	`}`
`285`	`285`
`286`	`286`	`if ((size == 1) && var.type.isSigned) {`
`287`		`- output ~= "LIT2r 00ff DUP #80 AND ?{ SWPr } STHr POPr SWP\n";`
	`287`	`+ output ~= "DUP #7f GTH #ff MUL SWP\n";`
`288`	`288`	`}`
`289`	`289`	`else if (size == 1) {`
`290`	`290`	`output ~= "#00 SWP\n";`