Slightly simplify some fallthrough handling code

ir/be/amd64/amd64_emitter.c

@@ -740,11 +740,10 @@ static void emit_amd64_jcc(const ir_node *irn)
 	amd64_emitf(proj_true, "j%PX %L", (int)cc);
 
 	ir_node const *const false_target = be_emit_get_cfop_target(proj_false);
-	if (be_emit_get_prev_block(false_target) == block) {
-		if (be_options.verbose_asm)
-			amd64_emitf(proj_false, "/* fallthrough to %L */");
-	} else  {
+	if (be_emit_get_prev_block(false_target) != block) {
 		amd64_emitf(proj_false, "jmp %L");
+	} else if (be_options.verbose_asm) {
+		amd64_emitf(proj_false, "/* fallthrough to %L */");
 	}
 }
 

ir/be/arm/arm_emitter.c

@@ -466,12 +466,10 @@ static void emit_arm_B(const ir_node *irn)
 	arm_emitf(irn, "b%s %t", suffix, proj_true);
 
 	ir_node const *const false_target = be_emit_get_cfop_target(proj_false);
-	if (be_emit_get_prev_block(false_target) == block) {
-		if (be_options.verbose_asm) {
-			arm_emitf(irn, "/* fallthrough to %t */", proj_false);
-		}
-	} else {
+	if (be_emit_get_prev_block(false_target) != block) {
 		arm_emitf(irn, "b %t", proj_false);
+	} else if (be_options.verbose_asm) {
+		arm_emitf(irn, "/* fallthrough to %t */", proj_false);
 	}
 }
 

ir/be/ia32/ia32_emitter.c

@@ -778,11 +778,10 @@ static void emit_ia32_Jcc(const ir_node *node)
 	}
 
 	/* the second Proj might be a fallthrough */
-	if (fallthrough) {
-		if (be_options.verbose_asm)
-			ia32_emitf(proj_false, "/* fallthrough to %L */");
-	} else {
+	if (!fallthrough) {
 		ia32_emitf(proj_false, "jmp %L");
+	} else if (be_options.verbose_asm) {
+		ia32_emitf(proj_false, "/* fallthrough to %L */");
 	}
 }
 
@@ -852,11 +851,10 @@ static void emit_ia32_Jmp(const ir_node *node)
 	/* we have a block schedule */
 	ir_node *block  = get_nodes_block(node);
 	ir_node *target = be_emit_get_cfop_target(node);
-	if (fallthrough_possible(block, target)) {
-		if (be_options.verbose_asm)
-			ia32_emitf(node, "/* fallthrough to %L */");
-	} else {
+	if (!fallthrough_possible(block, target)) {
 		ia32_emitf(node, "jmp %L");
+	} else if (be_options.verbose_asm) {
+		ia32_emitf(node, "/* fallthrough to %L */");
 	}
 }
 

ir/be/sparc/sparc_emitter.c

@@ -1186,16 +1186,14 @@ static void emit_sparc_branch(const ir_node *node, get_cc_func get_cc)
 
 	const ir_node *block       = get_nodes_block(node);
 	const ir_node *proj_target = be_emit_get_cfop_target(proj_false);
-	if (be_emit_get_prev_block(proj_target) == block) {
-		if (be_options.verbose_asm) {
-			sparc_emitf(node, "/* fallthrough to %L */", proj_false);
-		}
-	} else {
+	if (be_emit_get_prev_block(proj_target) != block) {
 		sparc_emitf(node, "ba %L", proj_false);
 		/* TODO: fill this slot as well */
 		emitting_delay_slot = true;
 		sparc_emitf(NULL, "nop");
 		emitting_delay_slot = false;
+	} else if (be_options.verbose_asm) {
+		sparc_emitf(node, "/* fallthrough to %L */", proj_false);
 	}
 }
 
@@ -1226,13 +1224,11 @@ static void emit_sparc_fbfcc(const ir_node *node)
 
 static void emit_sparc_Ba(const ir_node *node)
 {
-	if (ba_is_fallthrough(node)) {
-		if (be_options.verbose_asm) {
-			sparc_emitf(node, "/* fallthrough to %L */", node);
-		}
-	} else {
+	if (!ba_is_fallthrough(node)) {
 		sparc_emitf(node, "ba %L", node);
 		fill_delay_slot(node);
+	} else if (be_options.verbose_asm) {
+		sparc_emitf(node, "/* fallthrough to %L */", node);
 	}
 }