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150
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1 // REQUIRES: arm-registered-target
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2 // RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -o - %s | FileCheck -check-prefix=CHECKBASIC %s
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3 // RUN: %clang_cc1 -triple armv7a-eabi -mfloat-abi hard -emit-llvm -o - %s | FileCheck -check-prefix=CHECKCC %s
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4 // RUN: %clang_cc1 -triple armv7a-eabi -mfloat-abi hard -S -o - %s | FileCheck -check-prefix=CHECKASM %s
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5 // RUN: %clang_cc1 -triple aarch64-linux-gnu -emit-llvm -o - %s | FileCheck -check-prefix=CHECKGLOBALS %s
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6
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7 int g0;
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207
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8 // CHECKBASIC-DAG: @g0 ={{.*}} global i32 0
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173
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9 // CHECKASM-DAG: .bss
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10 // CHECKASM-DAG: .globl g0
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11 // CHECKASM-DAG: .p2align 2
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12 // CHECKASM-DAG: g0:
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13 // CHECKASM-DAG: .long 0
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14 // CHECKASM-DAG: .size g0, 4
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150
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15 __thread int TL_WITH_ALIAS;
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207
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16 // CHECKBASIC-DAG: @TL_WITH_ALIAS ={{.*}} thread_local global i32 0, align 4
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150
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17 // CHECKASM-DAG: .globl TL_WITH_ALIAS
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18 // CHECKASM-DAG: .size TL_WITH_ALIAS, 4
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19 static int bar1 = 42;
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20 // CHECKBASIC-DAG: @bar1 = internal global i32 42
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21 // CHECKASM-DAG: bar1:
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22 // CHECKASM-DAG: .size bar1, 4
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23
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24 // PR24379: alias variable expected to have same size as aliasee even when types differ
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25 const int wacom_usb_ids[] = {1, 1, 2, 3, 5, 8, 13, 0};
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207
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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
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150
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27 // CHECKASM-DAG: .globl wacom_usb_ids
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28 // CHECKASM-DAG: .size wacom_usb_ids, 32
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29 extern const int __mod_usb_device_table __attribute__ ((alias("wacom_usb_ids")));
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207
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30 // CHECKBASIC-DAG: @__mod_usb_device_table ={{.*}} alias i32, getelementptr inbounds ([8 x i32], [8 x i32]* @wacom_usb_ids, i32 0, i32 0)
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150
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31 // CHECKASM-DAG: .globl __mod_usb_device_table
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32 // CHECKASM-DAG: .set __mod_usb_device_table, wacom_usb_ids
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33 // CHECKASM-NOT: .size __mod_usb_device_table
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34
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35 extern int g1;
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36 extern int g1 __attribute((alias("g0")));
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207
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37 // CHECKBASIC-DAG: @g1 ={{.*}} alias i32, i32* @g0
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150
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38 // CHECKASM-DAG: .globl g1
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39 // CHECKASM-DAG: .set g1, g0
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40 // CHECKASM-NOT: .size g1
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41
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42 extern __thread int __libc_errno __attribute__ ((alias ("TL_WITH_ALIAS")));
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207
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43 // CHECKBASIC-DAG: @__libc_errno ={{.*}} thread_local alias i32, i32* @TL_WITH_ALIAS
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150
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44 // CHECKASM-DAG: .globl __libc_errno
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45 // CHECKASM-DAG: .set __libc_errno, TL_WITH_ALIAS
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46 // CHECKASM-NOT: .size __libc_errno
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47
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48 void f0(void) { }
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49 extern void f1(void);
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50 extern void f1(void) __attribute((alias("f0")));
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207
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51 // CHECKBASIC-DAG: @f1 ={{.*}} alias void (), void ()* @f0
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52 // CHECKBASIC-DAG: @test8_foo = weak{{.*}} alias void (...), bitcast (void ()* @test8_bar to void (...)*)
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53 // CHECKBASIC-DAG: @test8_zed ={{.*}} alias void (...), bitcast (void ()* @test8_bar to void (...)*)
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54 // CHECKBASIC-DAG: @test9_zed ={{.*}} alias void (), void ()* @test9_bar
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55 // CHECKBASIC: define{{.*}} void @f0() [[NUW:#[0-9]+]] {
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150
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56
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57 // Make sure that aliases cause referenced values to be emitted.
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58 // PR3200
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59 static inline int foo1() { return 0; }
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60 // CHECKBASIC-LABEL: define internal i32 @foo1()
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61 int foo() __attribute__((alias("foo1")));
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62 int bar() __attribute__((alias("bar1")));
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63
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64 extern int test6();
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65 void test7() { test6(); } // test6 is emitted as extern.
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66
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67 // test6 changes to alias.
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68 int test6() __attribute__((alias("test7")));
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69
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70 static int inner(int a) { return 0; }
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71 static int inner_weak(int a) { return 0; }
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72 extern __typeof(inner) inner_a __attribute__((alias("inner")));
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73 static __typeof(inner_weak) inner_weak_a __attribute__((weakref, alias("inner_weak")));
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207
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74 // CHECKCC: @inner_a ={{.*}} alias i32 (i32), i32 (i32)* @inner
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150
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75 // CHECKCC: define internal arm_aapcs_vfpcc i32 @inner(i32 %a) [[NUW:#[0-9]+]] {
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76
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77 int outer(int a) { return inner(a); }
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207
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78 // CHECKCC: define{{.*}} arm_aapcs_vfpcc i32 @outer(i32 %a) [[NUW]] {
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150
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79 // CHECKCC: call arm_aapcs_vfpcc i32 @inner(i32 %{{.*}})
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80
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81 int outer_weak(int a) { return inner_weak_a(a); }
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207
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82 // CHECKCC: define{{.*}} arm_aapcs_vfpcc i32 @outer_weak(i32 %a) [[NUW]] {
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150
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83 // CHECKCC: call arm_aapcs_vfpcc i32 @inner_weak(i32 %{{.*}})
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84 // CHECKCC: define internal arm_aapcs_vfpcc i32 @inner_weak(i32 %a) [[NUW]] {
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85
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86 // CHECKBASIC: attributes [[NUW]] = { noinline nounwind{{.*}} }
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87
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88 // CHECKCC: attributes [[NUW]] = { noinline nounwind{{.*}} }
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89
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90 void test8_bar() {}
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91 void test8_foo() __attribute__((weak, alias("test8_bar")));
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92 void test8_zed() __attribute__((alias("test8_foo")));
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93
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94 void test9_bar(void) { }
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95 void test9_zed(void) __attribute__((section("test")));
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96 void test9_zed(void) __attribute__((alias("test9_bar")));
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97
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98 // Test that the alias gets its linkage from its declared qual type.
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99 // CHECKGLOBALS: @test10_foo = internal
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100 // CHECKGLOBALS-NOT: @test10_foo = dso_local
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101 int test10;
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102 static int test10_foo __attribute__((alias("test10")));
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103 // CHECKGLOBALS: @test11_foo = internal
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104 // CHECKGLOBALS-NOT: @test11_foo = dso_local
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105 void test11(void) {}
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106 static void test11_foo(void) __attribute__((alias("test11")));
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107
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108 // Test that gnu_inline+alias work.
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207
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109 // CHECKGLOBALS: @test12_alias ={{.*}} alias void (), void ()* @test12
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150
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110 void test12(void) {}
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111 inline void test12_alias(void) __attribute__((gnu_inline, alias("test12")));
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207
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112
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113 // Test that a non visible (-Wvisibility) type doesn't assert.
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114 // CHECKGLOBALS: @test13_alias ={{.*}} alias {}, bitcast (void (i32)* @test13 to {}*)
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115 enum a_type { test13_a };
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116 void test13(enum a_type y) {}
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117 void test13_alias(enum undeclared_type y) __attribute__((alias ("test13")));
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