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[NFC][clang] Add a CHECK lines to tests checking offsetof-like expressions 

I am looking at constant-folding changes that could affect these tests, so
check that it emits the expected global value instead of just checking
that it doesn't crash.
This commit is contained in:
Alex Richardson 2021-09-22 10:09:17 +01:00
parent 90179f2323
commit a18181931f
3 changed files with 51 additions and 7 deletions
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49
clang/test/CodeGen/2005-01-02-ConstantInits.c
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@ -1,10 +1,24 @@
// RUN: %clang_cc1 %s -emit-llvm -o -
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature --check-globals --global-value-regex "@.+"
// RUN: %clang_cc1 -triple=x86_64-unknown-linux %s -emit-llvm -o - | FileCheck %s
// This tests all kinds of hard cases with initializers and
// array subscripts. This corresponds to PR487.
struct X { int a[2]; };
//.
// CHECK: @test.i23 = internal global i32 4, align 4
// CHECK: @i = global i32 4, align 4
// CHECK: @Arr = global [100 x i32] zeroinitializer, align 16
// CHECK: @foo2.X = internal global i32* bitcast (i8* getelementptr (i8, i8* bitcast ([100 x i32]* @Arr to i8*), i64 196) to i32*), align 8
// CHECK: @foo2.i23 = internal global i32 0, align 4
//.
// CHECK-LABEL: define {{[^@]+}}@test
// CHECK-SAME: () #[[ATTR0:[0-9]+]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* @test.i23, align 4
// CHECK-NEXT: ret i32 [[TMP0]]
//
int test() {
static int i23 = (int) &(((struct X *)0)->a[1]);
return i23;
@ -14,11 +28,40 @@ int i = (int) &( ((struct X *)0) -> a[1]);
int Arr[100];
// CHECK-LABEL: define {{[^@]+}}@foo
// CHECK-SAME: (i32 [[I:%.*]]) #[[ATTR0]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: [[I_ADDR:%.*]] = alloca i32, align 4
// CHECK-NEXT: store i32 [[I]], i32* [[I_ADDR]], align 4
// CHECK-NEXT: [[CALL:%.*]] = call i32 (i32*, ...) bitcast (i32 (...)* @bar to i32 (i32*, ...)*)(i32* getelementptr inbounds ([100 x i32], [100 x i32]* @Arr, i64 0, i64 49))
// CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[I_ADDR]], align 4
// CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[TMP0]] to i64
// CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [100 x i32], [100 x i32]* @Arr, i64 0, i64 [[IDXPROM]]
// CHECK-NEXT: [[CALL1:%.*]] = call i32 (i32*, ...) bitcast (i32 (...)* @bar to i32 (i32*, ...)*)(i32* [[ARRAYIDX]])
// CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[CALL]], [[CALL1]]
// CHECK-NEXT: ret i32 [[ADD]]
//
int foo(int i) { return bar(&Arr[49])+bar(&Arr[i]); }
int foo2(int i) {
// CHECK-LABEL: define {{[^@]+}}@foo2
// CHECK-SAME: (i32 [[I:%.*]]) #[[ATTR0]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: [[I_ADDR:%.*]] = alloca i32, align 4
// CHECK-NEXT: [[P:%.*]] = alloca i32*, align 8
// CHECK-NEXT: store i32 [[I]], i32* [[I_ADDR]], align 4
// CHECK-NEXT: store i32* getelementptr inbounds ([100 x i32], [100 x i32]* @Arr, i64 0, i64 0), i32** [[P]], align 8
// CHECK-NEXT: [[TMP0:%.*]] = load i32*, i32** [[P]], align 8
// CHECK-NEXT: [[INCDEC_PTR:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], i32 1
// CHECK-NEXT: store i32* [[INCDEC_PTR]], i32** [[P]], align 8
// CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[I_ADDR]], align 4
// CHECK-NEXT: [[IDX_EXT:%.*]] = sext i32 [[TMP1]] to i64
// CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @Arr, i64 0, i64 0), i64 [[IDX_EXT]]
// CHECK-NEXT: [[CALL:%.*]] = call i32 (i32*, ...) bitcast (i32 (...)* @bar to i32 (i32*, ...)*)(i32* [[ADD_PTR]])
// CHECK-NEXT: ret i32 [[CALL]]
//
int foo2(int i) {
static const int *X = &Arr[49];
static int i23 = (int) &( ((struct X *)0) -> a[0]);
int *P = Arr;
++P;
return bar(Arr+i);
}
}

6
clang/test/CodeGenCXX/2005-01-03-StaticInitializers.cpp
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@ -1,9 +1,9 @@
// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
// REQUIRES: LP64
// RUN: %clang_cc1 -triple=x86_64-linux-gnu -emit-llvm %s -o - | FileCheck %s
// RUN: %clang_cc1 -triple=i386-linux-gnu -emit-llvm %s -o - | FileCheck %s
struct S {
int A[2];
};
// CHECK-NOT: llvm.global_ctor
// CHECK: @XX = global i32 4, align 4
int XX = (int)(long)&(((struct S*)0)->A[1]);

3
clang/test/CodeGenCXX/2008-05-07-CrazyOffsetOf.cpp
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@ -1,4 +1,4 @@
// RUN: %clang_cc1 -emit-llvm %s -o -
// RUN: %clang_cc1 -triple=x86_64-unknown-linux -emit-llvm %s -o - | FileCheck %s
// rdar://5914926
struct bork {
@ -6,3 +6,4 @@ struct bork {
char * query;
};
int offset = (char *) &(((struct bork *) 0x10)->query) - (char *) 0x10;
// CHECK: @offset = global i32 8, align 4