9f2967bcfe
This is an enhancement to LLVM Source-Based Code Coverage in clang to track how many times individual branch-generating conditions are taken (evaluate to TRUE) and not taken (evaluate to FALSE). Individual conditions may comprise larger boolean expressions using boolean logical operators. This functionality is very similar to what is supported by GCOV except that it is very closely anchored to the ASTs. Differential Revision: https://reviews.llvm.org/D84467
51 lines
2.0 KiB
C
51 lines
2.0 KiB
C
// RUN: %clang_cc1 -mllvm -emptyline-comment-coverage=false -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -main-file-name switchmacro.c %s | FileCheck %s
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#define FOO(x) (void)x
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// CHECK: foo
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int foo(int i) { // CHECK-NEXT: File 0, [[@LINE]]:16 -> {{[0-9]+}}:2 = #0
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switch (i) { // CHECK-NEXT: Gap,File 0, [[@LINE]]:14 -> {{[0-9]+}}:11 = 0
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default: // CHECK-NEXT: File 0, [[@LINE]]:3 -> {{[0-9]+}}:11 = #2
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// CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:10 = #2, (#0 - #2)
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if (i == 1) // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:15 = #2
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// CHECK-NEXT: Branch,File 0, [[@LINE-1]]:9 -> [[@LINE-1]]:15 = #3, (#2 - #3)
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return 0; // CHECK: File 0, [[@LINE]]:7 -> [[@LINE]]:15 = #3
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// CHECK-NEXT: File 0, [[@LINE-1]]:15 -> [[@LINE+3]]:5 = (#2 - #3)
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// CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:5 -> [[@LINE+2]]:8 = (#2 - #3) (Expanded file = 1)
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// CHECK-NEXT: File 0, [[@LINE+1]]:8 -> {{[0-9]+}}:11 = (#2 - #3)
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FOO(1);
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case 0: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:13 = ((#2 + #4) - #3)
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// CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #4, (#0 - #4)
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return 2; // CHECK-NEXT: Gap,File 0, [[@LINE]]:13 -> [[@LINE+6]]:3 = #5
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// CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:3 -> [[@LINE+2]]:6 = 0
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// CHECK-NEXT: File 0, [[@LINE+1]]:6 -> {{[0-9]+}}:11 = 0
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FOO(1);
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// CHECK-NEXT: File 0, [[@LINE+1]]:3 -> {{[0-9]+}}:11 = #5
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label: ;
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}
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}
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// PR26825 - Crash when exiting macro expansion containing a switch
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// CHECK: bar
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#define START { while (0) { switch (0) {
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#define END }}}
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void bar() {
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START // CHECK: File 0, [[@LINE]]:8 -> [[@LINE+2]]:6
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default: ;
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END
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}
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// PR27948 - Crash when handling a switch partially covered by a macro
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// CHECK: baz
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#define START2 switch (0) default:
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void baz() {
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for (;;)
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START2 return; // CHECK: Expansion,File 0, [[@LINE]]:5 -> [[@LINE]]:11 = #1 (Expanded file = 1)
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}
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int main(int argc, const char *argv[]) {
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foo(3);
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return 0;
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}
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