fix pushing 32 bit variable values

MESYETI · MESYETI · commit 2377c68944ef · 2025-08-26T16:18:08.000+01:00
diff --git a/source/backends/x86_64.d b/source/backends/x86_64.d
@@ -554,7 +554,8 @@ class BackendX86_64 : CompilerBackend {
 					break;
 				}
 				case 4: {
-					output ~= format("mov%cxd rax, $(DWORD) [rbx + %d]\n", op, offset);
+					output ~= "xor rax, rax\n";
+					output ~= format("mov eax, [rbx + %d]\n", offset);
 					break;
 				}
 				case 8: output ~= format("mov rax, [rbx + %d]\n", offset); break;
@@ -572,7 +573,8 @@ class BackendX86_64 : CompilerBackend {
 					break;
 				}
 				case 4: {
-					output ~= format("mov%cxd rax, dword [%s + %d]\n", op, symbol, offset);
+					output ~= "xor rax, rax\n";
+					output ~= format("mov eax, [%s + %d]\n", symbol, offset);
 					break;
 				}
 				case 8: output ~= format("mov rax, [%s + %d]\n", symbol, offset); break;

Original file line number	Diff line number	Diff line change
`@@ -554,7 +554,8 @@ class BackendX86_64 : CompilerBackend {`
`554`	`554`	`break;`
`555`	`555`	`}`
`556`	`556`	`case 4: {`
`557`		`- output ~= format("mov%cxd rax, $(DWORD) [rbx + %d]\n", op, offset);`
	`557`	`+ output ~= "xor rax, rax\n";`
	`558`	`+ output ~= format("mov eax, [rbx + %d]\n", offset);`
`558`	`559`	`break;`
`559`	`560`	`}`
`560`	`561`	`case 8: output ~= format("mov rax, [rbx + %d]\n", offset); break;`
`@@ -572,7 +573,8 @@ class BackendX86_64 : CompilerBackend {`
`572`	`573`	`break;`
`573`	`574`	`}`
`574`	`575`	`case 4: {`
`575`		`- output ~= format("mov%cxd rax, dword [%s + %d]\n", op, symbol, offset);`
	`576`	`+ output ~= "xor rax, rax\n";`
	`577`	`+ output ~= format("mov eax, [%s + %d]\n", symbol, offset);`
`576`	`578`	`break;`
`577`	`579`	`}`
`578`	`580`	`case 8: output ~= format("mov rax, [%s + %d]\n", symbol, offset); break;`