| // RUN: %clang_cc1 -triple x86_64-linux-gnu -gkey-instructions -x c++ -std=c++17 %s -debug-info-kind=line-tables-only -emit-llvm -o - \ |
| // RUN: | FileCheck %s --implicit-check-not atomGroup --implicit-check-not atomRank |
| |
| // RUN: %clang_cc1 -triple x86_64-linux-gnu -gkey-instructions -x c %s -debug-info-kind=line-tables-only -emit-llvm -o - \ |
| // RUN: | FileCheck %s --implicit-check-not atomGroup --implicit-check-not atomRank |
| |
| // Perennial question: should the `dec` be in its own source atom or not |
| // (currently it is). |
| |
| // Another question - we've made the cmp and br separate source atoms for |
| // now, to match existing behaviour in this case: |
| // 1. do { |
| // 2. something(); |
| // 3. } |
| // 4. while (--A); |
| // Non key instruction behaviour is: 2, 4[, 3, 2, 4]+ |
| // The cond br is associated with the brace on line 3 and the cmp is line 4; |
| // if they were in the same atom group we'd step just: 2, 3[, 2, 3]+ |
| // FIXME: We could arguably improve the behaviour by making them the same |
| // group but having the cmp higher precedence, resulting in: 2, 4[, 2, 4]+. |
| |
| void a(int A) { |
| // CHECK: %dec = add nsw i32 %0, -1, !dbg [[G1R2:!.*]] |
| // CHECK: store i32 %dec, ptr %A.addr{{.*}}, !dbg [[G1R1:!.*]] |
| // CHECK: %tobool = icmp ne i32 %dec, 0, !dbg [[G2R1:!.*]] |
| // CHECK: br i1 %tobool, label %do.body, label %do.end, !dbg [[G3R1:!.*]], !llvm.loop |
| do { } while (--A); |
| |
| // CHECK: ret{{.*}}, !dbg [[RET:!.*]] |
| } |
| |
| // CHECK: [[G1R2]] = !DILocation({{.*}}, atomGroup: 1, atomRank: 2) |
| // CHECK: [[G1R1]] = !DILocation({{.*}}, atomGroup: 1, atomRank: 1) |
| // CHECK: [[G2R1]] = !DILocation({{.*}}, atomGroup: 2, atomRank: 1) |
| // CHECK: [[G3R1]] = !DILocation({{.*}}, atomGroup: 3, atomRank: 1) |
| // CHECK: [[RET]] = !DILocation({{.*}}, atomGroup: 4, atomRank: 1) |
