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teak-llvm/clang/test/CodeGenCXX/debug-info-nested-exprs.cpp
Bob Haarman c6c9b8fa1f [codeview] omit debug locations for nested exprs unless column info enabled 
Summary:
Microsoft Visual Studio expects debug locations to correspond to
statements. We used to emit locations for expressions nested inside statements.
This would confuse the debugger, causing it to stop multiple times on the
same line and breaking the "step into specific" feature. This change inhibits
the emission of debug locations for nested expressions when emitting CodeView
debug information, unless column information is enabled.

Fixes PR34312.

Reviewers: rnk, zturner

Reviewed By: rnk

Subscribers: majnemer, echristo, aprantl, cfe-commits

Differential Revision: https://reviews.llvm.org/D37529

llvm-svn: 312965
2017-09-11 22:11:57 +00:00

203 lines
8.8 KiB
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// RUN: %clang_cc1 -triple=x86_64-pc-windows-msvc -debug-info-kind=limited \
// RUN: -std=c++11 -gcodeview -emit-llvm -o - %s \
// RUN: | FileCheck -check-prefix=NONEST %s
// RUN: %clang_cc1 -triple=x86_64-pc-windows-msvc -debug-info-kind=limited \
// RUN: -std=c++11 -gcodeview -dwarf-column-info -emit-llvm -o - %s \
// RUN: | FileCheck -check-prefix=COLUMNS %s
// RUN: %clang_cc1 -triple=x86_64-unknown-linux-gnu -debug-info-kind=limited \
// RUN: -std=c++11 -emit-llvm -o - %s | FileCheck -check-prefix=NESTED %s
// RUN: %clang_cc1 -triple=x86_64-unknown-linux-gnu -debug-info-kind=limited \
// RUN: -std=c++11 -dwarf-column-info -emit-llvm -o - %s \
// RUN: | FileCheck -check-prefix=COLUMNS %s
class Foo {
public:
static Foo create();
void func();
int *begin();
int *end();
};
int bar(int x, int y);
int baz(int x, int y);
int qux(int x, int y);
int onearg(int x);
int noargs();
int noargs1();
Foo range(int x);
int foo(int x, int y, int z) {
int a = bar(x, y) +
baz(x, z) +
qux(y, z);
// NONEST: call i32 @{{.*}}bar{{.*}}, !dbg ![[LOC:[0-9]+]]
// NONEST: call i32 @{{.*}}baz{{.*}}, !dbg ![[LOC]]
// NONEST: call i32 @{{.*}}qux{{.*}}, !dbg ![[LOC]]
// NONEST: store i32 {{.*}}, i32* %a,{{.*}} !dbg ![[LOC]]
// NESTED: call i32 @{{.*}}bar{{.*}}, !dbg ![[BAR:[0-9]+]]
// NESTED: call i32 @{{.*}}baz{{.*}}, !dbg ![[BAZ:[0-9]+]]
// NESTED: call i32 @{{.*}}qux{{.*}}, !dbg ![[QUX:[0-9]+]]
// NESTED: store i32 {{.*}}, i32* %a,{{.*}} !dbg ![[BAR]]
// COLUMNS: call i32 @{{.*}}bar{{.*}}, !dbg ![[BAR:[0-9]+]]
// COLUMNS: call i32 @{{.*}}baz{{.*}}, !dbg ![[BAZ:[0-9]+]]
// COLUMNS: call i32 @{{.*}}qux{{.*}}, !dbg ![[QUX:[0-9]+]]
// COLUMNS: store i32 {{.*}}, i32* %a,{{.*}} !dbg ![[DECLA:[0-9]+]]
int i = 1, b = 0, c = 0;
// NONEST: store i32 1, i32* %i,{{.*}} !dbg ![[ILOC:[0-9]+]]
// NONEST: store i32 0, i32* %b,{{.*}} !dbg ![[ILOC]]
// NONEST: store i32 0, i32* %c,{{.*}} !dbg ![[ILOC]]
// NESTED: store i32 1, i32* %i,{{.*}} !dbg ![[ILOC:[0-9]+]]
// NESTED: store i32 0, i32* %b,{{.*}} !dbg ![[ILOC]]
// NESTED: store i32 0, i32* %c,{{.*}} !dbg ![[ILOC]]
// COLUMNS: store i32 1, i32* %i,{{.*}} !dbg ![[ILOC:[0-9]+]]
// COLUMNS: store i32 0, i32* %b,{{.*}} !dbg ![[BLOC:[0-9]+]]
// COLUMNS: store i32 0, i32* %c,{{.*}} !dbg ![[CLOC:[0-9]+]]
while (i > 0) {
b = bar(a, b);
--i;
}
// NONEST: call i32 @{{.*}}bar{{.*}}, !dbg ![[WHILE1:[0-9]+]]
// NONEST: store i32 %{{[^,]+}}, i32* %i,{{.*}} !dbg ![[WHILE2:[0-9]+]]
// NESTED: call i32 @{{.*}}bar{{.*}}, !dbg ![[WHILE1:[0-9]+]]
// NESTED: store i32 %{{[^,]+}}, i32* %i,{{.*}} !dbg ![[WHILE2:[0-9]+]]
// COLUMNS: call i32 @{{.*}}bar{{.*}}, !dbg ![[WHILE1:[0-9]+]]
// COLUMNS: store i32 %{{[^,]+}}, i32* %i,{{.*}} !dbg ![[WHILE2:[0-9]+]]
for (i = 0; i < 1; i++) {
b = bar(a, b);
c = qux(a, c);
}
// NONEST: call i32 @{{.*}}bar{{.*}}, !dbg ![[FOR1:[0-9]+]]
// NONEST: call i32 @{{.*}}qux{{.*}}, !dbg ![[FOR2:[0-9]+]]
// NESTED: call i32 @{{.*}}bar{{.*}}, !dbg ![[FOR1:[0-9]+]]
// NESTED: call i32 @{{.*}}qux{{.*}}, !dbg ![[FOR2:[0-9]+]]
// COLUMNS: call i32 @{{.*}}bar{{.*}}, !dbg ![[FOR1:[0-9]+]]
// COLUMNS: call i32 @{{.*}}qux{{.*}}, !dbg ![[FOR2:[0-9]+]]
if (a < b) {
int t = a;
a = b;
b = t;
}
// NONEST: store i32 %{{[^,]+}}, i32* %t,{{.*}} !dbg ![[IF1:[0-9]+]]
// NONEST: store i32 %{{[^,]+}}, i32* %a,{{.*}} !dbg ![[IF2:[0-9]+]]
// NONEST: store i32 %{{[^,]+}}, i32* %b,{{.*}} !dbg ![[IF3:[0-9]+]]
// NESTED: store i32 %{{[^,]+}}, i32* %t,{{.*}} !dbg ![[IF1:[0-9]+]]
// NESTED: store i32 %{{[^,]+}}, i32* %a,{{.*}} !dbg ![[IF2:[0-9]+]]
// NESTED: store i32 %{{[^,]+}}, i32* %b,{{.*}} !dbg ![[IF3:[0-9]+]]
// COLUMNS: store i32 %{{[^,]+}}, i32* %t,{{.*}} !dbg ![[IF1:[0-9]+]]
// COLUMNS: store i32 %{{[^,]+}}, i32* %a,{{.*}} !dbg ![[IF2:[0-9]+]]
// COLUMNS: store i32 %{{[^,]+}}, i32* %b,{{.*}} !dbg ![[IF3:[0-9]+]]
int d = onearg(
noargs());
// NONEST: call i32 @{{.*}}noargs{{.*}}, !dbg ![[DECLD:[0-9]+]]
// NONEST: call i32 @{{.*}}onearg{{.*}}, !dbg ![[DECLD]]
// NONEST: store i32 %{{[^,]+}}, i32* %d,{{.*}} !dbg ![[DECLD]]
// NESTED: call i32 @{{.*}}noargs{{.*}}, !dbg ![[DNOARGS:[0-9]+]]
// NESTED: call i32 @{{.*}}onearg{{.*}}, !dbg ![[DECLD:[0-9]+]]
// NESTED: store i32 %{{[^,]+}}, i32* %d,{{.*}} !dbg ![[DECLD]]
// COLUMNS: call i32 @{{.*}}noargs{{.*}}, !dbg ![[DNOARGS:[0-9]+]]
// COLUMNS: call i32 @{{.*}}onearg{{.*}}, !dbg ![[DONEARG:[0-9]+]]
// COLUMNS: store i32 %{{[^,]+}}, i32* %d,{{.*}} !dbg ![[DECLD:[0-9]+]]
d = onearg(noargs());
// NONEST: call i32 @{{.*}}noargs{{.*}}, !dbg ![[SETD:[0-9]+]]
// NONEST: call i32 @{{.*}}onearg{{.*}}, !dbg ![[SETD]]
// NONEST: store i32 %{{[^,]+}}, i32* %d,{{.*}} !dbg ![[SETD]]
// NESTED: call i32 @{{.*}}noargs{{.*}}, !dbg ![[SETD:[0-9]+]]
// NESTED: call i32 @{{.*}}onearg{{.*}}, !dbg ![[SETD]]
// NESTED: store i32 %{{[^,]+}}, i32* %d,{{.*}} !dbg ![[SETD]]
// COLUMNS: call i32 @{{.*}}noargs{{.*}}, !dbg ![[SETDNOARGS:[0-9]+]]
// COLUMNS: call i32 @{{.*}}onearg{{.*}}, !dbg ![[SETDONEARG:[0-9]+]]
// COLUMNS: store i32 %{{[^,]+}}, i32* %d,{{.*}} !dbg ![[SETD:[0-9]+]]
for (const auto x : range(noargs())) noargs1();
// NONEST: call i32 @{{.*}}noargs{{.*}}, !dbg ![[RANGEFOR:[0-9]+]]
// NONEST: call {{.+}} @{{.*}}range{{.*}}, !dbg ![[RANGEFOR]]
// NONEST: call i32 @{{.*}}noargs1{{.*}}, !dbg ![[RANGEFOR_BODY:[0-9]+]]
// NESTED: call i32 @{{.*}}noargs{{.*}}, !dbg ![[RANGEFOR:[0-9]+]]
// NESTED: call {{.+}} @{{.*}}range{{.*}}, !dbg ![[RANGEFOR]]
// NESTED: call i32 @{{.*}}noargs1{{.*}}, !dbg ![[RANGEFOR_BODY:[0-9]+]]
// COLUMNS: call i32 @{{.*}}noargs{{.*}}, !dbg ![[RANGEFOR_NOARGS:[0-9]+]]
// COLUMNS: call {{.+}} @{{.*}}range{{.*}}, !dbg ![[RANGEFOR_RANGE:[0-9]+]]
// COLUMNS: call i32 @{{.*}}noargs1{{.*}}, !dbg ![[RANGEFOR_BODY:[0-9]+]]
if (noargs() && noargs1()) {
Foo::create().func();
}
// NONEST: call i32 @{{.*}}noargs{{.*}}, !dbg ![[AND:[0-9]+]]
// NONEST: call i32 @{{.*}}noargs1{{.*}}, !dbg ![[AND]]
// NONEST: call {{.+}} @{{.*}}create{{.*}}, !dbg ![[AND_BODY:[0-9]+]]
// NONEST: call void @{{.*}}func{{.*}}, !dbg ![[AND_BODY]]
// NESTED: call i32 @{{.*}}noargs{{.*}}, !dbg ![[AND:[0-9]+]]
// NESTED: call i32 @{{.*}}noargs1{{.*}}, !dbg ![[AND]]
// NESTED: call {{.+}} @{{.*}}create{{.*}}, !dbg ![[AND_BODY:[0-9]+]]
// NESTED: call void @{{.*}}func{{.*}}, !dbg ![[AND_BODY]]
// COLUMNS: call i32 @{{.*}}noargs{{.*}}, !dbg ![[ANDLHS:[0-9]+]]
// COLUMNS: call i32 @{{.*}}noargs1{{.*}}, !dbg ![[ANDRHS:[0-9]+]]
// COLUMNS: call {{.+}} @{{.*}}create{{.*}}, !dbg ![[AND_CREATE:[0-9]+]]
// COLUMNS: call void @{{.*}}func{{.*}}, !dbg ![[AND_FUNC:[0-9]+]]
return a -
(b * z);
// NONEST: mul nsw i32 {{.*}}, !dbg ![[RETLOC:[0-9]+]]
// NONEST: sub nsw i32 {{.*}}, !dbg ![[RETLOC]]
// NONEST: ret i32 {{.*}}, !dbg ![[RETLOC]]
// NESTED: mul nsw i32 {{.*}}, !dbg ![[RETMUL:[0-9]+]]
// NESTED: sub nsw i32 {{.*}}, !dbg ![[RETSUB:[0-9]+]]
// NESTED: ret i32 {{.*}}, !dbg !
// COLUMNS: mul nsw i32 {{.*}}, !dbg ![[RETMUL:[0-9]+]]
// COLUMNS: sub nsw i32 {{.*}}, !dbg ![[RETSUB:[0-9]+]]
// COLUMNS: ret i32 {{.*}}, !dbg !
}
// NONEST: ![[WHILE1]] = !DILocation(
// NONEST: ![[WHILE2]] = !DILocation(
// NONEST: ![[FOR1]] = !DILocation(
// NONEST: ![[FOR2]] = !DILocation(
// NONEST: ![[IF1]] = !DILocation(
// NONEST: ![[IF2]] = !DILocation(
// NONEST: ![[IF3]] = !DILocation(
// NONEST: ![[RANGEFOR]] = !DILocation(
// NONEST-SAME: line: [[RANGEFOR_LINE:[0-9]+]]
// NONEST: ![[RANGEFOR_BODY]] = !DILocation(
// NONEST-SAME: line: [[RANGEFOR_LINE]]
// NESTED: ![[BAR]] = !DILocation(
// NESTED: ![[BAZ]] = !DILocation(
// NESTED: ![[QUX]] = !DILocation(
// NESTED: ![[DECLD]] = !DILocation
// NESTED: ![[DNOARGS]] = !DILocation
// NESTED: ![[RANGEFOR]] = !DILocation(
// NESTED-SAME: line: [[RANGEFOR_LINE:[0-9]+]]
// NESTED: ![[RANGEFOR_BODY]] = !DILocation(
// NESTED-SAME: line: [[RANGEFOR_LINE]]
// NESTED: ![[RETSUB]] = !DILocation(
// NESTED: ![[RETMUL]] = !DILocation(
// COLUMNS: ![[DECLA]] = !DILocation(
// COLUMNS: ![[BAR]] = !DILocation(
// COLUMNS: ![[BAZ]] = !DILocation(
// COLUMNS: ![[QUX]] = !DILocation(
// COLUMNS: ![[ILOC]] = !DILocation(
// COLUMNS: ![[BLOC]] = !DILocation(
// COLUMNS: ![[CLOC]] = !DILocation(
// COLUMNS: ![[DECLD]] = !DILocation(
// COLUMNS: ![[DNOARGS]] = !DILocation(
// COLUMNS: ![[DONEARG]] = !DILocation(
// COLUMNS: ![[SETDNOARGS]] = !DILocation(
// COLUMNS: ![[SETDONEARG]] = !DILocation(
// COLUMNS: ![[SETD]] = !DILocation(
// COLUMNS: ![[RANGEFOR_NOARGS]] = !DILocation(
// COLUMNS: ![[RANGEFOR_RANGE]] = !DILocation(
// COLUMNS: ![[RANGEFOR_BODY]] = !DILocation(
// COLUMNS: ![[ANDLHS]] = !DILocation
// COLUMNS: ![[ANDRHS]] = !DILocation
// COLUMNS: ![[AND_CREATE]] = !DILocation
// COLUMNS: ![[AND_FUNC]] = !DILocation
// COLUNMS: ![[RETSUB]] = !DILocation(
// COLUMNS: ![[RETMUL]] = !DILocation(
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