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e6ff553979
When doing CTU analysis setup you pre-compile .cpp to .ast and then you run clang-extdef-mapping on the .cpp file as well. This is a pretty slow process since we have to recompile the file each time. With this patch you can now run clang-extdef-mapping directly on the .ast file. That saves a lot of time. I tried this on llvm/lib/AsmParser/Parser.cpp and running extdef-mapping on the .cpp file took 5.4s on my machine. While running it on the .ast file it took 2s. This can save a lot of time for the setup phase of CTU analysis. Reviewed By: martong Differential Revision: https://reviews.llvm.org/D128704
65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
// RUN: %clang_extdef_map %s -- | FileCheck --implicit-check-not "c:@y" --implicit-check-not "c:@z" %s
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// RUN: %clang -emit-ast %s -o %t.ast
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// RUN: %clang_extdef_map %t.ast -- | FileCheck --implicit-check-not "c:@y" --implicit-check-not "c:@z" %s
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int f(int) {
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return 0;
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}
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// CHECK-DAG: 9:c:@F@f#I#
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extern const int x = 5;
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// CHECK-DAG: 4:c:@x
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// Non-const variables should not be collected.
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int y = 5;
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// In C++, const implies internal linkage, so not collected.
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const int z = 5;
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struct S {
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int a;
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};
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extern S const s = {.a = 2};
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// CHECK-DAG: 4:c:@s
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struct SF {
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const int a;
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};
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extern const SF sf = {.a = 2};
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// CHECK-DAG: 5:c:@sf
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struct SStatic {
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static const int a = 4;
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};
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const int SStatic::a;
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// CHECK-DAG: 14:c:@S@SStatic@a
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extern int const arr[5] = { 0, 1 };
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// CHECK-DAG: 6:c:@arr
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union U {
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const int a;
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const unsigned int b;
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};
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extern const U u = {.a = 6};
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// CHECK-DAG: 4:c:@u
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// No USR can be generated for this.
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// Check for no crash in this case.
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static union {
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float uf;
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const int ui;
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};
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void f(int (*)(char));
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void f(bool (*)(char));
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struct G {
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G() {
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f([](char) -> int { return 42; });
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// CHECK-DAG: 41:c:@S@G@F@G#@Sa@F@operator int (*)(char)#1
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f([](char) -> bool { return true; });
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// CHECK-DAG: 42:c:@S@G@F@G#@Sa@F@operator bool (*)(char)#1
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}
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};
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