forked from OSchip/llvm-project
b3f1480204
Breakpoint deletion in visual studio is currently implemented by iterating over the breakpoints we want to delete, for each of which we iterate over the complete set of breakpoints in the debugger instance until we find the one we wish to delete. Ideally we would resolve this by directly deleting each breakpoint by some ID rather than searching through the full breakpoint list for them, but in the absence of such a feature in VS we can instead invert the loop to improve performance. This patch changes breakpoint deletion to iterate over the complete list of breakpoints, deleting breakpoints that match the breakpoints we expect to delete by checking set membership. This represents a worst-case improvement from O(nm) to O(n), for 'm' breakpoints being deleted out of 'n' total. In practise this is almost exactly 'm'-times faster, as when we delete multiple breakpoints they are typically adjacent in the full breakpoint list. Differential Revision: https://reviews.llvm.org/D120658 |
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| .. | ||
| clang_llvm_roundtrip | ||
| dexter | ||
| dexter-tests | ||
| llgdb-tests | ||
| llvm-prettyprinters/gdb | ||
| win_cdb-tests | ||
| README.txt | ||
| lit.local.cfg | ||
README.txt
-*- rst -*-
This is a collection of tests to check debugging information generated by
compiler. This test suite can be checked out inside clang/test folder. This
will enable 'make test' for clang to pick up these tests.
Some tests (in the 'llgdb-tests' directory) are written with debugger
commands and checks for the intended debugger output in the source file,
using DEBUGGER: and CHECK: as prefixes respectively.
For example::
define i32 @f1(i32 %i) nounwind ssp {
; DEBUGGER: break f1
; DEBUGGER: r
; DEBUGGER: p i
; CHECK: $1 = 42
entry:
}
is a testcase where the debugger is asked to break at function 'f1' and
print value of argument 'i'. The expected value of 'i' is 42 in this case.
Other tests are written for use with the 'Dexter' tool (in the 'dexter-tests'
and 'dexter' directories respectively). These use a domain specific language
in comments to describe the intended debugger experience in a more abstract
way than debugger commands. This allows for testing integration across
multiple debuggers from one input language.
For example::
void __attribute__((noinline, optnone)) bar(int *test) {}
int main() {
int test;
test = 23;
bar(&test); // DexLabel('before_bar')
return test; // DexLabel('after_bar')
}
// DexExpectWatchValue('test', '23', on_line='before_bar')
// DexExpectWatchValue('test', '23', on_line='after_bar')
Labels two lines with the names 'before_bar' and 'after_bar', and records that
the 'test' variable is expected to have the value 23 on both of them.