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Add debuginfo-tests that use cdb on Windows
This is an initial prototype of how we can run debugger integration tests on Windows. cdb and windbg share a command language and debugger engine. Visual Studio has its own, but we should at least be able to use cdb as the basis for optimized debug info integration tests. There's a lot of work to do here still. For example: - Make fewer assumptions about the SDK location - Don't assume x64 (important, I need x86 testing) - More environment isolation, have lit setup vcvars instead of passing LIB and INCLUDE down. - Write a .py file to replace the grep+sed RUN line But, this seemed like a good enough concept to commit as is, since it's useful to me already. Reviewers: aprantl, zturner Differential Revision: https://reviews.llvm.org/D54187 llvm-svn: 361889
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These are debug info integration tests similar to the ones in the parent | ||
directory, except that these are designed to test compatibility between clang, | ||
lld, and cdb, the command line debugger that ships as part of the Microsoft | ||
Windows SDK. The debugger command language that cdb uses is very different from | ||
gdb and LLDB, so it's useful to be able to write some tests directly in the cdb | ||
command language. |
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// RUN: %clang_cl %s -o %t.exe -fuse-ld=lld -Z7 | ||
// RUN: grep DE[B]UGGER: %s | sed -e 's/.*DE[B]UGGER: //' > %t.script | ||
// RUN: %cdb -cf %t.script %t.exe | FileCheck %s --check-prefixes=DEBUGGER,CHECK | ||
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#include <stdio.h> | ||
int main() { | ||
printf("hello world\n"); | ||
int x = 42; | ||
__debugbreak(); | ||
// DEBUGGER: g | ||
// DEBUGGER: dv | ||
// CHECK: x = 0n42 | ||
} | ||
// DEBUGGER: q |
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# The win_cdb tests are supported when cmake was run in an MSVC environment. | ||
config.unsupported = not config.is_msvc |
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// RUN: %clang_cl %s -o %t.exe -fuse-ld=lld -Z7 | ||
// RUN: grep DE[B]UGGER: %s | sed -e 's/.*DE[B]UGGER: //' > %t.script | ||
// RUN: %cdb -cf %t.script %t.exe | FileCheck %s --check-prefixes=DEBUGGER,CHECK | ||
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// From https://llvm.org/pr38857, where we had issues with stack realignment. | ||
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struct Foo { | ||
int x = 42; | ||
int __declspec(noinline) foo(); | ||
void __declspec(noinline) bar(int *a, int *b, double *c); | ||
}; | ||
int Foo::foo() { | ||
int a = 1; | ||
int b = 2; | ||
double __declspec(align(32)) force_alignment = 0.42; | ||
bar(&a, &b, &force_alignment); | ||
// DEBUGGER: g | ||
// DEBUGGER: .frame 1 | ||
// DEBUGGER: dv | ||
// CHECK: a = 0n1 | ||
// CHECK: b = 0n2 | ||
// CHECK: force_alignment = 0.41999{{.*}} | ||
// DEBUGGER: q | ||
x += (int)force_alignment; | ||
return x; | ||
} | ||
void Foo::bar(int *a, int *b, double *c) { | ||
__debugbreak(); | ||
*c += *a + *b; | ||
} | ||
int main() { | ||
Foo o; | ||
o.foo(); | ||
} |