derek.holloway
7502bf64a4
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33 lines
1.2 KiB
LLVM
33 lines
1.2 KiB
LLVM
; Test -sanitizer-coverage-trace-compares=1 and how it prunes backedge compares.
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; 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
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; 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
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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"
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target triple = "x86_64-unknown-linux-gnu"
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define dso_local void @foo(ptr nocapture readnone %a, i32 %n) local_unnamed_addr {
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entry:
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br label %do.body
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do.body:
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %do.body ]
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tail call void (...) @bar()
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%inc = add nuw nsw i32 %i.0, 1
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%cmp = icmp slt i32 %inc, %n
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;PRUNE-LABEL: foo
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;PRUNE-NOT: __sanitizer_cov_trace_cmp4
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;PRUNE: ret void
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;NOPRUNE-LABEL: foo
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;NOPRUNE: call void @__sanitizer_cov_trace_cmp4
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;NOPRUNE-NEXT: icmp
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;NOPRUNE: ret void
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br i1 %cmp, label %do.body, label %do.end
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do.end:
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ret void
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}
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declare dso_local void @bar(...) local_unnamed_addr
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