1 // REQUIRES: arm-registered-target 2 // RUN: %clang_cc1 -no-opaque-pointers -triple i386-pc-linux-gnu -emit-llvm -o - %s | FileCheck -check-prefix=CHECKBASIC %s 3 // RUN: %clang_cc1 -no-opaque-pointers -triple armv7a-eabi -mfloat-abi hard -emit-llvm -o - %s | FileCheck -check-prefix=CHECKCC %s 4 // RUN: %clang_cc1 -no-opaque-pointers -triple armv7a-eabi -mfloat-abi hard -S -o - %s | FileCheck -check-prefix=CHECKASM %s 5 // RUN: %clang_cc1 -no-opaque-pointers -triple aarch64-linux-gnu -emit-llvm -o - %s | FileCheck -check-prefix=CHECKGLOBALS %s 6 7 int g0; 8 // CHECKBASIC-DAG: @g0 ={{.*}} global i32 0 9 // CHECKASM-DAG: .bss 10 // CHECKASM-DAG: .globl g0 11 // CHECKASM-DAG: .p2align 2 12 // CHECKASM-DAG: g0: 13 // CHECKASM-DAG: .long 0 14 // CHECKASM-DAG: .size g0, 4 15 __thread int TL_WITH_ALIAS; 16 // CHECKBASIC-DAG: @TL_WITH_ALIAS ={{.*}} thread_local global i32 0, align 4 17 // CHECKASM-DAG: .globl TL_WITH_ALIAS 18 // CHECKASM-DAG: .size TL_WITH_ALIAS, 4 19 static int bar1 = 42; 20 // CHECKBASIC-DAG: @bar1 = internal global i32 42 21 // CHECKASM-DAG: bar1: 22 // CHECKASM-DAG: .size bar1, 4 23 24 // PR24379: alias variable expected to have same size as aliasee even when types differ 25 const int wacom_usb_ids[] = {1, 1, 2, 3, 5, 8, 13, 0}; 26 // 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 27 // CHECKASM-DAG: .globl wacom_usb_ids 28 // CHECKASM-DAG: .size wacom_usb_ids, 32 29 extern const int __mod_usb_device_table __attribute__ ((alias("wacom_usb_ids"))); 30 // CHECKBASIC-DAG: @__mod_usb_device_table ={{.*}} alias i32, getelementptr inbounds ([8 x i32], [8 x i32]* @wacom_usb_ids, i32 0, i32 0) 31 // CHECKASM-DAG: .globl __mod_usb_device_table 32 // CHECKASM-DAG: .set __mod_usb_device_table, wacom_usb_ids 33 // CHECKASM-NOT: .size __mod_usb_device_table 34 35 extern int g1; 36 extern int g1 __attribute((alias("g0"))); 37 // CHECKBASIC-DAG: @g1 ={{.*}} alias i32, i32* @g0 38 // CHECKASM-DAG: .globl g1 39 // CHECKASM-DAG: .set g1, g0 40 // CHECKASM-NOT: .size g1 41 42 extern __thread int __libc_errno __attribute__ ((alias ("TL_WITH_ALIAS"))); 43 // CHECKBASIC-DAG: @__libc_errno ={{.*}} thread_local alias i32, i32* @TL_WITH_ALIAS 44 // CHECKASM-DAG: .globl __libc_errno 45 // CHECKASM-DAG: .set __libc_errno, TL_WITH_ALIAS 46 // CHECKASM-NOT: .size __libc_errno 47 48 void f0(void) { } 49 extern void f1(void); 50 extern void f1(void) __attribute((alias("f0"))); 51 // CHECKBASIC-DAG: @f1 ={{.*}} alias void (), void ()* @f0 52 // CHECKBASIC-DAG: @test8_foo = weak{{.*}} alias void (...), bitcast (void ()* @test8_bar to void (...)*) 53 // CHECKBASIC-DAG: @test8_zed ={{.*}} alias void (...), bitcast (void ()* @test8_bar to void (...)*) 54 // CHECKBASIC-DAG: @test9_zed ={{.*}} alias void (), void ()* @test9_bar 55 // CHECKBASIC: define{{.*}} void @f0() [[NUW:#[0-9]+]] { 56 57 // Make sure that aliases cause referenced values to be emitted. 58 // PR3200 59 static inline int foo1() { return 0; } 60 // CHECKBASIC-LABEL: define internal i32 @foo1() 61 int foo() __attribute__((alias("foo1"))); 62 int bar() __attribute__((alias("bar1"))); 63 64 extern int test6(); 65 void test7() { test6(); } // test6 is emitted as extern. 66 67 // test6 changes to alias. 68 int test6() __attribute__((alias("test7"))); 69 70 static int inner(int a) { return 0; } 71 static int inner_weak(int a) { return 0; } 72 extern __typeof(inner) inner_a __attribute__((alias("inner"))); 73 static __typeof(inner_weak) inner_weak_a __attribute__((weakref, alias("inner_weak"))); 74 // CHECKCC: @inner_a ={{.*}} alias i32 (i32), i32 (i32)* @inner 75 // CHECKCC: define internal arm_aapcs_vfpcc i32 @inner(i32 noundef %a) [[NUW:#[0-9]+]] { 76 77 int outer(int a) { return inner(a); } 78 // CHECKCC: define{{.*}} arm_aapcs_vfpcc i32 @outer(i32 noundef %a) [[NUW]] { 79 // CHECKCC: call arm_aapcs_vfpcc i32 @inner(i32 noundef %{{.*}}) 80 81 int outer_weak(int a) { return inner_weak_a(a); } 82 // CHECKCC: define{{.*}} arm_aapcs_vfpcc i32 @outer_weak(i32 noundef %a) [[NUW]] { 83 // CHECKCC: call arm_aapcs_vfpcc i32 @inner_weak(i32 noundef %{{.*}}) 84 // CHECKCC: define internal arm_aapcs_vfpcc i32 @inner_weak(i32 noundef %a) [[NUW]] { 85 86 // CHECKBASIC: attributes [[NUW]] = { noinline nounwind{{.*}} } 87 88 // CHECKCC: attributes [[NUW]] = { noinline nounwind{{.*}} } 89 90 void test8_bar() {} 91 void test8_foo() __attribute__((weak, alias("test8_bar"))); 92 void test8_zed() __attribute__((alias("test8_foo"))); 93 94 void test9_bar(void) { } 95 void test9_zed(void) __attribute__((section("test"))); 96 void test9_zed(void) __attribute__((alias("test9_bar"))); 97 98 // Test that the alias gets its linkage from its declared qual type. 99 // CHECKGLOBALS: @test10_foo = internal 100 // CHECKGLOBALS-NOT: @test10_foo = dso_local 101 int test10; 102 static int test10_foo __attribute__((alias("test10"))); 103 // CHECKGLOBALS: @test11_foo = internal 104 // CHECKGLOBALS-NOT: @test11_foo = dso_local 105 void test11(void) {} 106 static void test11_foo(void) __attribute__((alias("test11"))); 107 108 // Test that gnu_inline+alias work. 109 // CHECKGLOBALS: @test12_alias ={{.*}} alias void (), void ()* @test12 110 void test12(void) {} 111 inline void test12_alias(void) __attribute__((gnu_inline, alias("test12"))); 112 113 // Test that a non visible (-Wvisibility) type doesn't assert. 114 // CHECKGLOBALS: @test13_alias ={{.*}} alias {}, bitcast (void (i32)* @test13 to {}*) 115 enum a_type { test13_a }; 116 void test13(enum a_type y) {} 117 void test13_alias(enum undeclared_type y) __attribute__((alias ("test13"))); 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