1 // REQUIRES: arm-registered-target 2 // RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -o - %s | FileCheck -check-prefix=CHECKBASIC %s 3 // RUN: %clang_cc1 -triple armv7a-eabi -mfloat-abi hard -emit-llvm -o - %s | FileCheck -check-prefix=CHECKCC %s 4 // RUN: %clang_cc1 -triple armv7a-eabi -mfloat-abi hard -S -o - %s | FileCheck -check-prefix=CHECKASM %s 5 // RUN: %clang_cc1 -triple aarch64-linux-gnu -emit-llvm -o - %s | FileCheck -check-prefix=CHECKGLOBALS %s 6 7 int g0; 8 // CHECKBASIC-DAG: @g0 = common global i32 0 9 // CHECKASM-DAG: .comm g0,4,4 10 __thread int TL_WITH_ALIAS; 11 // CHECKBASIC-DAG: @TL_WITH_ALIAS = thread_local global i32 0, align 4 12 // CHECKASM-DAG: .globl TL_WITH_ALIAS 13 // CHECKASM-DAG: .size TL_WITH_ALIAS, 4 14 static int bar1 = 42; 15 // CHECKBASIC-DAG: @bar1 = internal global i32 42 16 // CHECKASM-DAG: bar1: 17 // CHECKASM-DAG: .size bar1, 4 18 19 // PR24379: alias variable expected to have same size as aliasee even when types differ 20 const int wacom_usb_ids[] = {1, 1, 2, 3, 5, 8, 13, 0}; 21 // 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 22 // CHECKASM-DAG: .globl wacom_usb_ids 23 // CHECKASM-DAG: .size wacom_usb_ids, 32 24 extern const int __mod_usb_device_table __attribute__ ((alias("wacom_usb_ids"))); 25 // CHECKBASIC-DAG: @__mod_usb_device_table = alias i32, getelementptr inbounds ([8 x i32], [8 x i32]* @wacom_usb_ids, i32 0, i32 0) 26 // CHECKASM-DAG: .globl __mod_usb_device_table 27 // CHECKASM-DAG: .set __mod_usb_device_table, wacom_usb_ids 28 // CHECKASM-NOT: .size __mod_usb_device_table 29 30 extern int g1; 31 extern int g1 __attribute((alias("g0"))); 32 // CHECKBASIC-DAG: @g1 = alias i32, i32* @g0 33 // CHECKASM-DAG: .globl g1 34 // CHECKASM-DAG: .set g1, g0 35 // CHECKASM-NOT: .size g1 36 37 extern __thread int __libc_errno __attribute__ ((alias ("TL_WITH_ALIAS"))); 38 // CHECKBASIC-DAG: @__libc_errno = thread_local alias i32, i32* @TL_WITH_ALIAS 39 // CHECKASM-DAG: .globl __libc_errno 40 // CHECKASM-DAG: .set __libc_errno, TL_WITH_ALIAS 41 // CHECKASM-NOT: .size __libc_errno 42 43 void f0(void) { } 44 extern void f1(void); 45 extern void f1(void) __attribute((alias("f0"))); 46 // CHECKBASIC-DAG: @f1 = alias void (), void ()* @f0 47 // CHECKBASIC-DAG: @test8_foo = weak alias void (...), bitcast (void ()* @test8_bar to void (...)*) 48 // CHECKBASIC-DAG: @test8_zed = alias void (...), bitcast (void ()* @test8_bar to void (...)*) 49 // CHECKBASIC-DAG: @test9_zed = alias void (), void ()* @test9_bar 50 // CHECKBASIC: define void @f0() [[NUW:#[0-9]+]] { 51 52 // Make sure that aliases cause referenced values to be emitted. 53 // PR3200 54 static inline int foo1() { return 0; } 55 // CHECKBASIC-LABEL: define internal i32 @foo1() 56 int foo() __attribute__((alias("foo1"))); 57 int bar() __attribute__((alias("bar1"))); 58 59 extern int test6(); 60 void test7() { test6(); } // test6 is emitted as extern. 61 62 // test6 changes to alias. 63 int test6() __attribute__((alias("test7"))); 64 65 static int inner(int a) { return 0; } 66 static int inner_weak(int a) { return 0; } 67 extern __typeof(inner) inner_a __attribute__((alias("inner"))); 68 static __typeof(inner_weak) inner_weak_a __attribute__((weakref, alias("inner_weak"))); 69 // CHECKCC: @inner_a = alias i32 (i32), i32 (i32)* @inner 70 // CHECKCC: define internal arm_aapcs_vfpcc i32 @inner(i32 %a) [[NUW:#[0-9]+]] { 71 72 int outer(int a) { return inner(a); } 73 // CHECKCC: define arm_aapcs_vfpcc i32 @outer(i32 %a) [[NUW]] { 74 // CHECKCC: call arm_aapcs_vfpcc i32 @inner(i32 %{{.*}}) 75 76 int outer_weak(int a) { return inner_weak_a(a); } 77 // CHECKCC: define arm_aapcs_vfpcc i32 @outer_weak(i32 %a) [[NUW]] { 78 // CHECKCC: call arm_aapcs_vfpcc i32 @inner_weak(i32 %{{.*}}) 79 // CHECKCC: define internal arm_aapcs_vfpcc i32 @inner_weak(i32 %a) [[NUW]] { 80 81 // CHECKBASIC: attributes [[NUW]] = { noinline nounwind{{.*}} } 82 83 // CHECKCC: attributes [[NUW]] = { noinline nounwind{{.*}} } 84 85 void test8_bar() {} 86 void test8_foo() __attribute__((weak, alias("test8_bar"))); 87 void test8_zed() __attribute__((alias("test8_foo"))); 88 89 void test9_bar(void) { } 90 void test9_zed(void) __attribute__((section("test"))); 91 void test9_zed(void) __attribute__((alias("test9_bar"))); 92 93 // Test that the alias gets its linkage from its declared qual type. 94 // CHECKGLOBALS: @test10_foo = internal 95 // CHECKGLOBALS-NOT: @test10_foo = dso_local 96 int test10; 97 static int test10_foo __attribute__((alias("test10"))); 98 // CHECKGLOBALS: @test11_foo = internal 99 // CHECKGLOBALS-NOT: @test11_foo = dso_local 100 void test11(void) {} 101 static void test11_foo(void) __attribute__((alias("test11"))); 102 103 // Test that gnu_inline+alias work. 104 // CHECKGLOBALS: @test12_alias = alias void (), void ()* @test12 105 void test12(void) {} 106 inline void test12_alias(void) __attribute__((gnu_inline, alias("test12"))); 107