am 876d6995: Merge "Update aosp/master LLVM for rebase to r222494."

* commit '876d6995443e99d13696f3941c3a789a4daa7c7a':
  Update aosp/master LLVM for rebase to r222494.

1 files changed, 89 insertions, 0 deletions

diff --git a/test/Instrumentation/SanitizerCoverage/coverage.ll b/test/Instrumentation/SanitizerCoverage/coverage.ll
new file mode 100644
index 0000000..da0498d
--- /dev/null
+++ b/test/Instrumentation/SanitizerCoverage/coverage.ll
@@ -0,0 +1,89 @@
+; RUN: opt < %s -sancov -sanitizer-coverage-level=0 -S | FileCheck %s --check-prefix=CHECK0
+; RUN: opt < %s -sancov -sanitizer-coverage-level=1 -S | FileCheck %s --check-prefix=CHECK1
+; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -S | FileCheck %s --check-prefix=CHECK2
+; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -sanitizer-coverage-block-threshold=10 -S | FileCheck %s --check-prefix=CHECK2
+; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -sanitizer-coverage-block-threshold=1  -S | FileCheck %s --check-prefix=CHECK1
+; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-block-threshold=10 -S | FileCheck %s --check-prefix=CHECK3
+; RUN: opt < %s -sancov -sanitizer-coverage-level=4 -S | FileCheck %s --check-prefix=CHECK4
+
+; RUN: opt < %s -sancov -sanitizer-coverage-level=0  -S | FileCheck %s --check-prefix=CHECK0
+; RUN: opt < %s -sancov -sanitizer-coverage-level=1  -S | FileCheck %s --check-prefix=CHECK1
+; RUN: opt < %s -sancov -sanitizer-coverage-level=2  -S | FileCheck %s --check-prefix=CHECK2
+; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -sanitizer-coverage-block-threshold=10 \
+; RUN:      -S | FileCheck %s --check-prefix=CHECK2
+; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -sanitizer-coverage-block-threshold=1 \
+; RUN:      -S | FileCheck %s --check-prefix=CHECK1
+
+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 void @foo(i32* %a) sanitize_address {
+entry:
+  %tobool = icmp eq i32* %a, null
+  br i1 %tobool, label %if.end, label %if.then
+
+  if.then:                                          ; preds = %entry
+  store i32 0, i32* %a, align 4
+  br label %if.end
+
+  if.end:                                           ; preds = %entry, %if.then
+  ret void
+}
+
+; CHECK0-NOT: call void @__sanitizer_cov(
+; CHECK0-NOT: call void @__sanitizer_cov_module_init(
+
+; CHECK1-LABEL: define void @foo
+; CHECK1: %0 = load atomic i8* @__sancov_gen_cov_foo monotonic, align 1
+; CHECK1: %1 = icmp eq i8 0, %0
+; CHECK1: br i1 %1, label %2, label %3
+; CHECK1: call void @__sanitizer_cov
+; CHECK1-NOT: call void @__sanitizer_cov
+; CHECK1: store atomic i8 1, i8* @__sancov_gen_cov_foo monotonic, align 1
+
+; CHECK1-LABEL: define internal void @sancov.module_ctor
+; CHECK1-NOT: ret
+; CHECK1: call void @__sanitizer_cov_module_init(i64 2)
+; CHECK1: ret
+
+
+; CHECK2-LABEL: define void @foo
+; CHECK2: call void @__sanitizer_cov
+; CHECK2: call void @__sanitizer_cov
+; CHECK2: call void @__sanitizer_cov
+; CHECK2-NOT: call void @__sanitizer_cov
+; CHECK2: ret void
+
+; CHECK2-LABEL: define internal void @sancov.module_ctor
+; CHECK2-NOT: ret
+; CHECK2: call void @__sanitizer_cov_module_init(i64 4)
+; CHECK2: ret
+
+; CHECK3-LABEL: define void @foo
+; CHECK3: call void @__sanitizer_cov
+; CHECK3: call void @__sanitizer_cov
+; CHECK3: call void @__sanitizer_cov
+; CHECK3-NOT: ret void
+; CHECK3: call void @__sanitizer_cov
+; CHECK3-NOT: call void @__sanitizer_cov
+; CHECK3: ret void
+
+
+%struct.StructWithVptr = type { i32 (...)** }
+
+define void @CallViaVptr(%struct.StructWithVptr* %foo) uwtable sanitize_address {
+entry:
+  %0 = bitcast %struct.StructWithVptr* %foo to void (%struct.StructWithVptr*)***
+  %vtable = load void (%struct.StructWithVptr*)*** %0, align 8
+  %1 = load void (%struct.StructWithVptr*)** %vtable, align 8
+  tail call void %1(%struct.StructWithVptr* %foo)
+  tail call void %1(%struct.StructWithVptr* %foo)
+  tail call void asm sideeffect "", ""()
+  ret void
+}
+
+; We expect to see two calls to __sanitizer_cov_indir_call16
+; with different values of second argument.
+; CHECK4-LABEL: define void @CallViaVptr
+; CHECK4: call void @__sanitizer_cov_indir_call16({{.*}},[[CACHE:.*]])
+; CHECK4-NOT: call void @__sanitizer_cov_indir_call16({{.*}},[[CACHE]])
+; CHECK4: ret void