Remove TARGET_PREFER_32_BIT support.

Bug: https://issuetracker.google.com/138812821
Test: builds
Change-Id: If96cccbd82ba1311165d61c947c928c6e7cd5593

android/arch.go

@@ -810,7 +810,7 @@ func GetOsSpecificVariantsOfCommonOSVariant(mctx BaseModuleContext) []Module {
 // Valid multilib values include:
 //    "both": compile for all Targets supported by the OsClass (generally x86_64 and x86, or arm64 and arm).
 //    "first": compile for only a single preferred Target supported by the OsClass.  This is generally x86_64 or arm64,
-//        but may be arm for a 32-bit only build or a build with TARGET_PREFER_32_BIT=true set.
+//        but may be arm for a 32-bit only build.
 //    "32": compile for only a single 32-bit Target supported by the OsClass.
 //    "64": compile for only a single 64-bit Target supported by the OsClass.
 //    "common": compile a for a single Target that will work on all Targets suported by the OsClass (for example Java).

android/config.go

@@ -732,14 +732,6 @@ func (c *config) Eng() bool {
 	return Bool(c.productVariables.Eng)
 }
 
-func (c *config) DevicePrefer32BitApps() bool {
-	return Bool(c.productVariables.DevicePrefer32BitApps)
-}
-
-func (c *config) DevicePrefer32BitExecutables() bool {
-	return Bool(c.productVariables.DevicePrefer32BitExecutables)
-}
-
 func (c *config) DevicePrimaryArchType() ArchType {
 	return c.Targets[Android][0].Arch.ArchType
 }

android/variable.go

@@ -272,10 +272,6 @@ type productVariables struct {
 	CoveragePaths        []string `json:",omitempty"`
 	CoverageExcludePaths []string `json:",omitempty"`
 
-	DevicePrefer32BitApps        *bool `json:",omitempty"`
-	DevicePrefer32BitExecutables *bool `json:",omitempty"`
-	HostPrefer32BitExecutables   *bool `json:",omitempty"`
-
 	SanitizeHost       []string `json:",omitempty"`
 	SanitizeDevice     []string `json:",omitempty"`
 	SanitizeDeviceDiag []string `json:",omitempty"`

apex/apex.go

@@ -2280,9 +2280,6 @@ func newApexBundle() *apexBundle {
 	module.AddProperties(&module.properties)
 	module.AddProperties(&module.targetProperties)
 	module.AddProperties(&module.overridableProperties)
-	module.Prefer32(func(ctx android.BaseModuleContext, base *android.ModuleBase, class android.OsClass) bool {
-		return class == android.Device && ctx.Config().DevicePrefer32BitExecutables()
-	})
 	android.InitAndroidMultiTargetsArchModule(module, android.HostAndDeviceSupported, android.MultilibCommon)
 	android.InitDefaultableModule(module)
 	android.InitSdkAwareModule(module)

cc/cc.go

@@ -825,15 +825,8 @@ func (c *Module) Init() android.Module {
 	}
 
 	c.Prefer32(func(ctx android.BaseModuleContext, base *android.ModuleBase, class android.OsClass) bool {
-		switch class {
+		// Windows builds always prefer 32-bit
-		case android.Device:
+		return class == android.HostCross
-			return ctx.Config().DevicePrefer32BitExecutables()
-		case android.HostCross:
-			// Windows builds always prefer 32-bit
-			return true
-		default:
-			return false
-		}
 	})
 	android.InitAndroidArchModule(c, c.hod, c.multilib)
 	android.InitApexModule(c)

java/app.go

@@ -973,10 +973,6 @@ func AndroidAppFactory() android.Module {
 		&module.overridableAppProperties,
 		&module.usesLibrary.usesLibraryProperties)
 
-	module.Prefer32(func(ctx android.BaseModuleContext, base *android.ModuleBase, class android.OsClass) bool {
-		return class == android.Device && ctx.Config().DevicePrefer32BitApps()
-	})
-
 	android.InitAndroidMultiTargetsArchModule(module, android.DeviceSupported, android.MultilibCommon)
 	android.InitDefaultableModule(module)
 	android.InitOverridableModule(module, &module.appProperties.Overrides)

sh/sh_binary.go

@@ -260,9 +260,6 @@ func InitShBinaryModule(s *ShBinary) {
 // executable binary to <partition>/bin.
 func ShBinaryFactory() android.Module {
 	module := &ShBinary{}
-	module.Prefer32(func(ctx android.BaseModuleContext, base *android.ModuleBase, class android.OsClass) bool {
-		return class == android.Device && ctx.Config().DevicePrefer32BitExecutables()
-	})
 	InitShBinaryModule(module)
 	android.InitAndroidArchModule(module, android.HostAndDeviceSupported, android.MultilibFirst)
 	return module