arguments to fmov swapped (dlang#21358)

WalterBright · web-flow · commit 8d90d93c00f3 · 2025-05-08T16:05:42.000+08:00
diff --git a/compiler/src/dmd/backend/arm/cod1.d b/compiler/src/dmd/backend/arm/cod1.d
@@ -1302,7 +1302,7 @@ void fixresult(ref CodeBuilder cdb, elem* e, regm_t retregs, ref regm_t outretre
             reg_t Vn = findreg(retregs);
             reg_t Vd = allocreg(cdb, outretregs, tym);  // allocate return regs
             uint ftype = INSTR.szToFtype(sz);
-            cdb.gen1(INSTR.fmov(ftype,Vd,Vn));  // FMOV Vd,Vn
+            cdb.gen1(INSTR.fmov(ftype,Vn,Vd));  // FMOV Vd,Vn
         }
         else if (sz > REGSIZE)
         {

Original file line number	Diff line number	Diff line change
`@@ -1302,7 +1302,7 @@ void fixresult(ref CodeBuilder cdb, elem* e, regm_t retregs, ref regm_t outretre`
`1302`	`1302`	`reg_t Vn = findreg(retregs);`
`1303`	`1303`	`reg_t Vd = allocreg(cdb, outretregs, tym); // allocate return regs`
`1304`	`1304`	`uint ftype = INSTR.szToFtype(sz);`
`1305`		`- cdb.gen1(INSTR.fmov(ftype,Vd,Vn)); // FMOV Vd,Vn`
	`1305`	`+ cdb.gen1(INSTR.fmov(ftype,Vn,Vd)); // FMOV Vd,Vn`
`1306`	`1306`	`}`
`1307`	`1307`	`else if (sz > REGSIZE)`
`1308`	`1308`	`{`