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// RUN: %clang %s -target arm64-apple-darwin -emit-llvm -S -fsanitize-coverage=trace-pc-guard -mllvm -sanitizer-coverage-gated-trace-callbacks=1 -o - | FileCheck %s --check-prefixes=CHECK,GATED
// RUN: %clang %s -target arm64-apple-darwin -emit-llvm -S -fsanitize-coverage=trace-pc-guard -mllvm -sanitizer-coverage-gated-trace-callbacks=0 -o - | FileCheck %s --check-prefixes=CHECK,PLAIN
// RUN: %clang %s -target arm64-apple-darwin -emit-llvm -S -fsanitize-coverage=trace-pc-guard,trace-cmp -mllvm -sanitizer-coverage-gated-trace-callbacks=1 -o - | FileCheck %s --check-prefixes=CHECK,GATED,GATEDCMP
// RUN: %clang %s -target arm64-apple-darwin -emit-llvm -S -fsanitize-coverage=trace-pc-guard,trace-cmp -mllvm -sanitizer-coverage-gated-trace-callbacks=0 -o - | FileCheck %s --check-prefixes=CHECK,PLAIN,PLAINCMP
// RUN: not %clang %s -target arm64-apple-darwin -emit-llvm -S -fsanitize-coverage=trace-pc -mllvm -sanitizer-coverage-gated-trace-callbacks=1 -o /dev/null 2>&1 | FileCheck %s --check-prefixes=INCOMPATIBLE
// RUN: not %clang %s -target arm64-apple-darwin -emit-llvm -S -fsanitize-coverage=inline-8bit-counters -mllvm -sanitizer-coverage-gated-trace-callbacks=1 -o /dev/null 2>&1 | FileCheck %s --check-prefixes=INCOMPATIBLE
// RUN: not %clang %s -target arm64-apple-darwin -emit-llvm -S -fsanitize-coverage=inline-bool-flag -mllvm -sanitizer-coverage-gated-trace-callbacks=1 -o /dev/null 2>&1 | FileCheck %s --check-prefixes=INCOMPATIBLE
// Verify that we do not emit the __sancov_gate section for "plain" trace-pc-guard
// GATED: section "__DATA,__sancov_gate"
// PLAIN-NOT: section "__DATA,__sancov_gate"
// Produce an error for all incompatible sanitizer coverage modes.
// INCOMPATIBLE: error: 'sanitizer-coverage-gated-trace-callbacks' is only supported with trace-pc-guard or trace-cmp
int x[10];
// CHECK: define{{.*}} void @foo
void foo(int n, int m) {
// COM: Verify that we're emitting the call to __sanitizer_cov_trace_pc_guard upon
// COM: checking the value of __sancov_should_track.
// GATED: [[VAL:%.*]] = load i64, {{.*}}@__sancov_should_track
// GATED-NOT: [[VAL:%.*]] = load i64, i64* @__sancov_should_track
// GATED-NEXT: [[CMP:%.*]] = icmp ne i64 [[VAL]], 0
// GATED-NEXT: br i1 [[CMP]], label %[[L_TRUE:.*]], label %[[L_FALSE:.*]], !prof [[WEIGHTS:!.+]]
// GATED: [[L_TRUE]]:
// GATED-NEXT: call void @__sanitizer_cov_trace_pc_guard
// COM: Check the trace-cmp instrumentation of the if (n) branch
// GATEDCMP: [[OPERAND:%.*]] = load i32, {{.*}}
// GATEDCMP-NEXT: br i1 [[CMP]], label %[[L_TRUE_1:.*]], label %[[L_FALSE_1:.*]]
// GATEDCMP: [[L_TRUE_1]]:
// GATEDCMP-NEXT: call void @__sanitizer_cov_trace_const_cmp4(i32 0, i32 [[OPERAND]])
// GATED: br i1 [[CMP]], label %[[L_TRUE_2:.*]], label %[[L_FALSE_2:.*]]
// GATED: [[L_TRUE_2]]:
// GATED-NEXT: call void @__sanitizer_cov_trace_pc_guard
// GATED: [[WEIGHTS]] = !{!"branch_weights", i32 1, i32 100000}
// COM: With the non-gated instrumentation, we should not emit the
// COM: __sancov_should_track global.
// PLAIN-NOT: __sancov_should_track
// But we should still be emitting the calls to the callback.
// PLAIN: call void @__sanitizer_cov_trace_pc_guard
// PLAINCMP: [[OPERAND:%.*]] = load i32, {{.*}}
// PLAINCMP-NEXT: call void @__sanitizer_cov_trace_const_cmp4(i32 0, i32 [[OPERAND]])
if (n) {
x[n] = 42;
if (m) {
x[m] = 41;
}
}
}
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