From: John Brawn <john.brawn@arm.com>
Date: Wed, 12 Aug 2015 15:15:27 +0000 (+0000)
Subject: Add test for PR24379
X-Git-Tag: studio-1.4~176
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=495008edde9a4c839501b97f69d272c01003f194;p=platform%2Fupstream%2Fllvm.git

Add test for PR24379

The fix for this is in LLVM but it depends on how clang handles the alias
attribute, so add a test to the clang tests to make sure everything works
together as expected.

Differential Revision: http://reviews.llvm.org/D11980

llvm-svn: 244756
---

diff --git a/clang/test/CodeGen/alias.c b/clang/test/CodeGen/alias.c
index b773cc8..12c6469 100644
--- a/clang/test/CodeGen/alias.c
+++ b/clang/test/CodeGen/alias.c
@@ -1,19 +1,42 @@
 // RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -o - %s | FileCheck -check-prefix=CHECKBASIC %s
 // RUN: %clang_cc1 -triple armv7a-eabi -mfloat-abi hard -emit-llvm -o - %s | FileCheck -check-prefix=CHECKCC %s
+// RUN: %clang_cc1 -triple armv7a-eabi -mfloat-abi hard -S -o - %s | FileCheck -check-prefix=CHECKASM %s
 
 int g0;
-// CHECKBASIC: @g0 = common global i32 0
+// CHECKBASIC-DAG: @g0 = common global i32 0
+// CHECKASM-DAG: .comm g0,4,4
 __thread int TL_WITH_ALIAS;
 // CHECKBASIC-DAG: @TL_WITH_ALIAS = thread_local global i32 0, align 4
+// CHECKASM-DAG: .globl TL_WITH_ALIAS
+// CHECKASM-DAG: .size TL_WITH_ALIAS, 4
 static int bar1 = 42;
-// CHECKBASIC: @bar1 = internal global i32 42
+// CHECKBASIC-DAG: @bar1 = internal global i32 42
+// CHECKASM-DAG: bar1:
+// CHECKASM-DAG: .size bar1, 4
+
+// PR24379: alias variable expected to have same size as aliasee even when types differ
+const int wacom_usb_ids[] = {1, 1, 2, 3, 5, 8, 13, 0};
+// CHECKBASIC-DAG: @wacom_usb_ids = constant [8 x i32] [i32 1, i32 1, i32 2, i32 3, i32 5, i32 8, i32 13, i32 0], align 4
+// CHECKASM-DAG: .globl wacom_usb_ids
+// CHECKASM-DAG: .size wacom_usb_ids, 32
+extern const int __mod_usb_device_table __attribute__ ((alias("wacom_usb_ids")));
+// CHECKBASIC-DAG: @__mod_usb_device_table = alias getelementptr inbounds ([8 x i32], [8 x i32]* @wacom_usb_ids, i32 0, i32 0)
+// CHECKASM-DAG: .globl __mod_usb_device_table
+// CHECKASM-DAG: __mod_usb_device_table = wacom_usb_ids
+// CHECKASM-DAG-NOT: .size __mod_usb_device_table
 
 extern int g1;
 extern int g1 __attribute((alias("g0")));
 // CHECKBASIC-DAG: @g1 = alias i32* @g0
+// CHECKASM-DAG: .globl g1
+// CHECKASM-DAG: g1 = g0
+// CHECKASM-DAG-NOT: .size g1
 
 extern __thread int __libc_errno __attribute__ ((alias ("TL_WITH_ALIAS")));
 // CHECKBASIC-DAG: @__libc_errno = thread_local alias i32* @TL_WITH_ALIAS
+// CHECKASM-DAG: .globl __libc_errno
+// CHECKASM-DAG: __libc_errno = TL_WITH_ALIAS
+// CHECKASM-DAG-NOT: .size __libc_errno
 
 void f0(void) { }
 extern void f1(void);