x86: revert changes to CMP emitter instruction, but keep the test

Author: jayrm

src/compiler/emit_x86.bas

@@ -4153,30 +4153,8 @@ private sub hCMPI _
 		ostr = "test " + dst + COMMA + dst
 		outp ostr
 	else
-
-		'' immediate and offset? it's invalid for CMP so use a temp reg
-		if( (svreg->typ = IR_VREGTYPE_IMM) and (dvreg->typ = IR_VREGTYPE_OFS) ) then
-
-			dim reg as integer, isfree as integer, rname as string
-			reg = hFindRegNotInVreg( dvreg )
-			rname = *hGetRegName( dvreg->dtype, reg )
-			isfree = hIsRegFree( FB_DATACLASS_INTEGER, reg )
-
-			if( isfree = FALSE ) then
-				hPUSH( rname )
-			end if
-
-			outp "mov " + rname + COMMA + dst
-			outp "cmp " + rname + COMMA + src
-
-			if( isfree = FALSE ) then
-				hPop( rname )
-			end if
-
-		else
-			outp "cmp " + dst + COMMA + src
-
-		end if
+		ostr = "cmp " + dst + COMMA + src
+		outp ostr
 	end if
 
 	'' no result to be set? just branch