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llvm-project/clang/test/CodeGen/annotations-builtin.c

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Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can annotate global, local variables, struct fields, or arbitrary statements (using the __builtin_annotation), rdar://8037476. llvm-svn: 139423
2011-09-10 06:41:49 +08:00
// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
// END.
static long long llfoo;
static int intfoo;
static short shortfoo;
static char charfoo;
// CHECK: private unnamed_addr constant [13 x i8] {{.*}}annotation_a{{.*}} section "llvm.metadata"
// CHECK-NOT: {{.*}}annotation_a{{.*}}
static int foo(int a) {
return a + 1;
}
int main(int argc, char **argv) {
char barray[16];
char *b = (char *) __builtin_annotation((int)barray, "annotation_a");
// CHECK: ptrtoint i8* {{.*}} to i32
// CHECK-NEXT: call i32 @llvm.annotation.i32
// CHECK: inttoptr {{.*}} to i8*
int call = __builtin_annotation(foo(argc), "annotation_a");
// CHECK: call {{.*}} @foo
// CHECK: call i32 @llvm.annotation.i32
long long lla = __builtin_annotation(llfoo, "annotation_a");
Currently __builtin_annotation() only annotates an i32. i32 __builtin_annotation(i32, string); Applying it to i64 (e.g., long long) generates the following IR. trunc i64 {{.*}} to i32 call i32 @llvm.annotation.i32 zext i32 {{.*}} to i64 The redundant truncation and extension make the result difficult to use. This patch makes __builtin_annotation() generic. type __builtin_annotation(type, string); For the i64 example, it simplifies the generated IR to: call i64 @llvm.annotation.i64 Patch by Xi Wang! llvm-svn: 155764
2012-04-29 01:39:16 +08:00
// CHECK: call i64 @llvm.annotation.i64
Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can annotate global, local variables, struct fields, or arbitrary statements (using the __builtin_annotation), rdar://8037476. llvm-svn: 139423
2011-09-10 06:41:49 +08:00
int inta = __builtin_annotation(intfoo, "annotation_a");
Update Clang tests to handle explicitly typed load changes in LLVM. llvm-svn: 230795
2015-02-28 05:19:58 +08:00
// CHECK: load i32, i32* @intfoo
Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can annotate global, local variables, struct fields, or arbitrary statements (using the __builtin_annotation), rdar://8037476. llvm-svn: 139423
2011-09-10 06:41:49 +08:00
// CHECK-NEXT: call i32 @llvm.annotation.i32
// CHECK-NEXT: store
short shorta = __builtin_annotation(shortfoo, "annotation_a");
Currently __builtin_annotation() only annotates an i32. i32 __builtin_annotation(i32, string); Applying it to i64 (e.g., long long) generates the following IR. trunc i64 {{.*}} to i32 call i32 @llvm.annotation.i32 zext i32 {{.*}} to i64 The redundant truncation and extension make the result difficult to use. This patch makes __builtin_annotation() generic. type __builtin_annotation(type, string); For the i64 example, it simplifies the generated IR to: call i64 @llvm.annotation.i64 Patch by Xi Wang! llvm-svn: 155764
2012-04-29 01:39:16 +08:00
// CHECK: call i16 @llvm.annotation.i16
Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can annotate global, local variables, struct fields, or arbitrary statements (using the __builtin_annotation), rdar://8037476. llvm-svn: 139423
2011-09-10 06:41:49 +08:00
char chara = __builtin_annotation(charfoo, "annotation_a");
Currently __builtin_annotation() only annotates an i32. i32 __builtin_annotation(i32, string); Applying it to i64 (e.g., long long) generates the following IR. trunc i64 {{.*}} to i32 call i32 @llvm.annotation.i32 zext i32 {{.*}} to i64 The redundant truncation and extension make the result difficult to use. This patch makes __builtin_annotation() generic. type __builtin_annotation(type, string); For the i64 example, it simplifies the generated IR to: call i64 @llvm.annotation.i64 Patch by Xi Wang! llvm-svn: 155764
2012-04-29 01:39:16 +08:00
// CHECK: call i8 @llvm.annotation.i8
Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can annotate global, local variables, struct fields, or arbitrary statements (using the __builtin_annotation), rdar://8037476. llvm-svn: 139423
2011-09-10 06:41:49 +08:00
char **arg = (char**) __builtin_annotation((int) argv, "annotation_a");
// CHECK: ptrtoint i8** {{.*}} to
// CHECK: call i32 @llvm.annotation.i32
// CHECK: inttoptr {{.*}} to i8**
return 0;
[CodeGen] Fix calling llvm.var.annotation outside of a basic block. When we have an annotated local variable after a function returns, we generate IR that fails verification with the error > Instruction referencing instruction not embedded in a basic block! And it means that bitcast referencing alloca doesn't have a parent basic block. Fix by checking if we are at an unreachable point and skip emitting annotations. This approach is similar to the way we emit variable initializer and debug info. rdar://problem/46200420 Reviewers: rjmccall Reviewed By: rjmccall Subscribers: aprantl, jkorous, dexonsmith, cfe-commits Differential Revision: https://reviews.llvm.org/D58147 llvm-svn: 355166
2019-03-01 10:15:39 +08:00
int after_return = __builtin_annotation(argc, "annotation_a");
// CHECK-NOT: call i32 @llvm.annotation.i32
Bring llvm.annotation* intrinsics support back to where it was in llvm-gcc: can annotate global, local variables, struct fields, or arbitrary statements (using the __builtin_annotation), rdar://8037476. llvm-svn: 139423
2011-09-10 06:41:49 +08:00
}