Add alias option for gcc tree/rtl viewer (#7985) (#7987)

This option is undocumented, but has been around since 2010 for GCC
4.6.0

lib/base-compiler.ts

@@ -715,6 +715,9 @@ export class BaseCompiler {
         if (gccDumpOptions.dumpFlags.address !== false) {
             flags += '-address';
         }
+        if (gccDumpOptions.dumpFlags.alias !== false) {
+            flags += '-alias';
+        }
         if (gccDumpOptions.dumpFlags.slim !== false) {
             flags += '-slim';
         }

static/panes/compiler.ts

@@ -2173,6 +2173,7 @@ export class Compiler extends MonacoPane<monaco.editor.IStandaloneCodeEditor, Co
             this.dumpFlags = {
                 gimpleFe: dumpOpts.gimpleFeOption,
                 address: dumpOpts.addressOption,
+                alias: dumpOpts.aliasOption,
                 slim: dumpOpts.slimOption,
                 raw: dumpOpts.rawOption,
                 details: dumpOpts.detailsOption,

static/panes/gccdump-view.interfaces.ts

@@ -47,6 +47,7 @@ export type GccDumpFiltersState = {
 
     gimpleFeOption: boolean;
     addressOption: boolean;
+    aliasOption: boolean;
     blocksOption: boolean;
     linenoOption: boolean;
     detailsOption: boolean;

static/panes/gccdump-view.ts

@@ -53,6 +53,8 @@ export class GccDump extends MonacoPane<monaco.editor.IStandaloneCodeEditor, Gcc
     optionGimpleFeTitle: string;
     optionAddressButton: JQuery<HTMLElement>;
     optionAddressTitle: string;
+    optionAliasButton: JQuery<HTMLElement>;
+    optionAliasTitle: string;
     optionSlimButton: JQuery<HTMLElement>;
     optionSlimTitle: string;
     optionRawButton: JQuery<HTMLElement>;
@@ -190,6 +192,9 @@ export class GccDump extends MonacoPane<monaco.editor.IStandaloneCodeEditor, Gcc
         this.optionAddressButton = this.domRoot.find("[data-bind='addressOption']");
         this.optionAddressTitle = this.optionAddressButton.prop('title');
 
+        this.optionAliasButton = this.domRoot.find("[data-bind='aliasOption']");
+        this.optionAliasTitle = this.optionAliasButton.prop('title');
+
         this.optionSlimButton = this.domRoot.find("[data-bind='slimOption']");
         this.optionSlimTitle = this.optionSlimButton.prop('title');
 
@@ -270,6 +275,7 @@ export class GccDump extends MonacoPane<monaco.editor.IStandaloneCodeEditor, Gcc
         formatButtonTitle(this.dumpIpaButton, this.dumpIpaTitle);
         formatButtonTitle(this.optionGimpleFeButton, this.optionGimpleFeTitle);
         formatButtonTitle(this.optionAddressButton, this.optionAddressTitle);
+        formatButtonTitle(this.optionAliasButton, this.optionAliasTitle);
         formatButtonTitle(this.optionSlimButton, this.optionSlimTitle);
         formatButtonTitle(this.optionRawButton, this.optionRawTitle);
         formatButtonTitle(this.optionDetailsButton, this.optionDetailsTitle);

types/compilation/compilation.interfaces.ts

@@ -72,6 +72,7 @@ export type LibsAndOptions = {
 export type GccDumpFlags = {
     gimpleFe: boolean;
     address: boolean;
+    alias: boolean;
     slim: boolean;
     raw: boolean;
     details: boolean;

views/templates/panes/gccdump.pug

@@ -29,6 +29,7 @@ mixin optionButton(bind, isActive, text, title)
         // This addresses one was marked as aria-pressed=true, but not checked. What should its default state be then? Set to false for now
         +optionButton("gimpleFeOption", false, "GIMPLE Frontend Syntax", "Dump syntax that the GIMPLE frontend can accept")
         +optionButton("addressOption", false, "Addresses", "Print the address of each tree node")
+        +optionButton("aliasOption", false, "Alias", "Display alias information")
         +optionButton("blocksOption", false, "Basic Blocks", "Show the basic block boundaries (disabled in raw dumps)")
         +optionButton("linenoOption", false, "Line Numbers", "Show line numbers")
         +optionButton("detailsOption", false, "Pass Details", "Enable more detailed dumps (not honored by every dump option)")