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
133 lines
8.2 KiB
C++
133 lines
8.2 KiB
C++
// RUN: %clang_cc1 -mllvm -emptyline-comment-coverage=false -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -emit-llvm-only -std=c++1z -triple %itanium_abi_triple -main-file-name switch.cpp %s | FileCheck %s
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// CHECK: foo
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void foo(int i) { // CHECK-NEXT: File 0, [[@LINE]]:17 -> [[@LINE+9]]:2 = #0
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switch(i) { // CHECK-NEXT: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = ((#0 - #2) - #3), (#2 + #3)
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// CHECK-NEXT: Gap,File 0, [[@LINE-1]]:13 -> [[@LINE+4]]:10 = 0
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case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:11 = #2
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return; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #2, (#0 - #2)
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case 2: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #3
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break; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #3, (#0 - #3)
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} // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:10 -> [[@LINE+1]]:3 = #1
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int x = 0; // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:2 = #1
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}
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int nop() { return 0; }
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// CHECK: bar
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void bar(int i) { // CHECK-NEXT: File 0, [[@LINE]]:17 -> [[@LINE+21]]:2 = #0
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switch (i) // CHECK-NEXT: Branch,File 0, [[@LINE]]:11 -> [[@LINE]]:12 = #0, 0
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; // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:6 = 0
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switch (i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+17]]:2 = #1
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} // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:11 -> [[@LINE-1]]:12 = #1, 0
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switch (i) // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+14]]:2 = #2
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nop(); // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:11 -> [[@LINE-1]]:12 = #2, 0
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// CHECK-NEXT: File 0, [[@LINE-1]]:5 -> [[@LINE-1]]:10 = 0
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switch (i) // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+11]]:2 = #3
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case 1: // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:11 -> [[@LINE-1]]:12 = (#3 - #5), #5
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// CHECK-NEXT: File 0, [[@LINE-1]]:3 -> [[@LINE+1]]:10 = #5
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nop(); // CHECK-NEXT: Branch,File 0, [[@LINE-2]]:3 -> [[@LINE-2]]:9 = #5, (#3 - #5)
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// CHECK-NEXT: File 0, [[@LINE+1]]:3 -> [[@LINE+7]]:2 = #4
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switch (i) { // CHECK-NEXT: Branch,File 0, [[@LINE]]:11 -> [[@LINE]]:12 = (#4 - #7), #7
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nop(); // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:14 -> [[@LINE+2]]:10 = 0
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case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #7
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nop(); // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #7, (#4 - #7)
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}
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nop(); // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:2 = #6
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}
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// CHECK: baz
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void baz() { // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+5]]:2 = #0
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switch (int i = true ? nop() // CHECK: [[@LINE]]:26 -> [[@LINE]]:31 = #2
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: nop(); // CHECK-NEXT: [[@LINE]]:26 -> [[@LINE]]:31 = (#0 - #2)
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i) {} // CHECK-NEXT: Branch,File 0, [[@LINE]]:11 -> [[@LINE]]:12 = #0, 0
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nop(); // CHECK-NEXT: [[@LINE]]:3 -> [[@LINE+1]]:2 = #1
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}
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// CHECK-NEXT: main
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int main() { // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+38]]:2 = #0
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int i = 0;
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switch(i) { // CHECK-NEXT: Gap,File 0, [[@LINE]]:13 -> [[@LINE+8]]:10 = 0
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case 0: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:10 = #2
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i = 1; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #2, (#0 - #2)
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break;
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case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:10 = #3
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i = 2; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #3, (#0 - #3)
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break;
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default: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #4
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break; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:10 = #4, (#0 - #4)
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} // CHECK-NEXT: File 0, [[@LINE-1]]:10 -> [[@LINE+1]]:3 = #1
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switch(i) { // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+26]]:2 = #1
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case 0: // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:13 -> [[@LINE+6]]:10 = 0
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i = 1; // CHECK-NEXT: File 0, [[@LINE-1]]:3 -> [[@LINE+1]]:10 = #6
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break; // CHECK-NEXT: Branch,File 0, [[@LINE-2]]:3 -> [[@LINE-2]]:9 = #6, (#1 - #6)
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case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+3]]:10 = #7
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i = 2; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #7, (#1 - #7)
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default: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = (#7 + #8)
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break; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:10 = #8, (#1 - #8)
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} // CHECK-NEXT: File 0, [[@LINE-1]]:10 -> [[@LINE+2]]:3 = #5
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// CHECK-NEXT: File 0, [[@LINE+1]]:3 -> [[@LINE+17]]:2 = #5
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switch(i) { // CHECK-NEXT: Branch,File 0, [[@LINE]]:10 -> [[@LINE]]:11 = ((((#5 - #10) - #11) - #12) - #13), (((#10 + #11) + #12) + #13)
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// CHECK-NEXT: Gap,File 0, [[@LINE-1]]:13 -> [[@LINE+8]]:11 = 0
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case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+7]]:11 = #10
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// CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #10, (#5 - #10)
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case 2: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+5]]:11 = (#10 + #11)
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i = 11; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #11, (#5 - #11)
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case 3: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+3]]:11 = ((#10 + #11) + #12)
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// CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #12, (#5 - #12)
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case 4: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:11 = (((#10 + #11) + #12) + #13)
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i = 99; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #13, (#5 - #13)
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}
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foo(1); // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+3]]:11 = #9
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bar(1);
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baz();
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return 0;
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}
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// CHECK: pr44011
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int pr44011(int i) { // CHECK-NEXT: File 0, [[@LINE]]:20 -> {{.*}}:2 = #0
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switch (i) { // CHECK-NEXT: Gap,File 0, [[@LINE]]:14 -> [[@LINE+6]]:13 = 0
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case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:13 = #2
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return 0; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #2, (#0 - #2)
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default: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:13 = #3
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return 1; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:10 = #3, (#0 - #3)
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}
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} // A region for counter #1 is missing due to the missing return.
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// FIXME: End location for "case 1" shouldn't point at the end of the switch.
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// CHECK: fallthrough
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int fallthrough(int i) { // CHECK-NEXT: File 0, [[@LINE]]:24 -> [[@LINE+14]]:2 = #0
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// CHECK-NEXT: Branch,File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:11 = ((((#0 - #2) - #3) - #4) - #5), (((#2 + #3) + #4) + #5)
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switch(i) { // CHECK-NEXT: Gap,File 0, [[@LINE]]:13 -> [[@LINE+10]]:10 = 0
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case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+9]]:10 = #2
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i = 23; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #2, (#0 - #2)
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case 2: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:10 = (#2 + #3)
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i = 11; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #3, (#0 - #3)
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break;
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case 3: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+4]]:10 = #4
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// CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #4, (#0 - #4)
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case 4: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:10 = (#4 + #5)
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i = 99; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #5, (#0 - #5)
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break;
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}
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}
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void abort(void) __attribute((noreturn));
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// CHECK: noret
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int noret(int x) { // CHECK-NEXT: File 0, [[@LINE]]:18 -> [[@LINE+9]]:2
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switch (x) { // CHECK-NEXT: Gap,File 0, [[@LINE]]:14 -> [[@LINE+6]]:14 = 0
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default: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:12
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abort(); // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:10 = #2, (#0 - #2)
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case 1: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:13
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return 5; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #3, (#0 - #3)
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case 2: // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:14
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return 10; // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:3 -> [[@LINE-1]]:9 = #4, (#0 - #4)
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}
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}
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