| ; Test -sanitizer-coverage-trace-compares=1 and how it prunes backedge compares. |
| ; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=1 -sanitizer-coverage-trace-compares=1 -sanitizer-coverage-prune-blocks=1 -S | FileCheck %s --check-prefix=PRUNE |
| ; RUN: opt < %s -passes='module(sancov-module)' -sanitizer-coverage-level=1 -sanitizer-coverage-trace-compares=1 -sanitizer-coverage-prune-blocks=0 -S | FileCheck %s --check-prefix=NOPRUNE |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define dso_local void @foo(ptr nocapture readnone %a, i32 %n) local_unnamed_addr { |
| entry: |
| br label %do.body |
| |
| do.body: |
| %i.0 = phi i32 [ 0, %entry ], [ %inc, %do.body ] |
| tail call void (...) @bar() |
| %inc = add nuw nsw i32 %i.0, 1 |
| %cmp = icmp slt i32 %inc, %n |
| ;PRUNE-LABEL: foo |
| ;PRUNE-NOT: __sanitizer_cov_trace_cmp4 |
| ;PRUNE: ret void |
| |
| ;NOPRUNE-LABEL: foo |
| ;NOPRUNE: call void @__sanitizer_cov_trace_cmp4 |
| ;NOPRUNE-NEXT: icmp |
| ;NOPRUNE: ret void |
| |
| br i1 %cmp, label %do.body, label %do.end |
| |
| do.end: |
| ret void |
| } |
| |
| declare dso_local void @bar(...) local_unnamed_addr |
