[sanitizer-coverage] add two more modes of instrumentation: trace-div and trace-gep, mostly usaful for value-profile-based fuzzing; llvm part

llvm-svn: 280043

1 files changed, 37 insertions, 0 deletions

diff --git a/llvm/test/Instrumentation/SanitizerCoverage/div-tracing.ll b/llvm/test/Instrumentation/SanitizerCoverage/div-tracing.ll
new file mode 100644
index 00000000000..aee872c130b
--- /dev/null
+++ b/llvm/test/Instrumentation/SanitizerCoverage/div-tracing.ll
@@ -0,0 +1,37 @@
+; Test -sanitizer-coverage-trace-divs=1
+; RUN: opt < %s -sancov -sanitizer-coverage-level=1 -sanitizer-coverage-trace-divs=1  -S | FileCheck %s
+
+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 i32 @div_a_b(i32 %a, i32 %b) local_unnamed_addr {
+entry:
+  %div = sdiv i32 %a, %b
+  ret i32 %div
+}
+
+; CHECK-LABEL: div_a_b
+; CHECK: call void @__sanitizer_cov_trace_div4(i32 %b)
+; CHECK: ret
+
+
+define i32 @div_a_10(i32 %a) local_unnamed_addr {
+entry:
+  %div = sdiv i32 %a, 10
+  ret i32 %div
+}
+
+; CHECK-LABEL: div_a_10
+; CHECK-NOT: __sanitizer_cov_trace_div
+; CHECK: ret
+
+define i64 @div_a_b_64(i64 %a, i64 %b) local_unnamed_addr {
+entry:
+  %div = udiv i64 %a, %b
+  ret i64 %div
+}
+
+; CHECK-LABEL: div_a_b
+; CHECK: call void @__sanitizer_cov_trace_div8(i64 %b)
+; CHECK: ret
+