1285e8bcac
Summary: This was attempted once before in https://reviews.llvm.org/D79698, but was reverted due to the coverage pass running in the wrong part of the pipeline. This commit puts it in the same place as the other sanitizers. This changes PassBuilder.OptimizerLastEPCallbacks to work on a ModulePassManager instead of a FunctionPassManager. That is because SanitizerCoverage cannot (easily) be split into a module pass and a function pass like some of the other sanitizers since in its current implementation it conditionally inserts module constructors based on whether or not it successfully modified functions. This fixes compiler-rt/test/msan/coverage-levels.cpp under the new pass manager (last check-msan test). Currently sanitizers + LTO don't work together under the new pass manager, so I removed tests that checked that this combination works for sancov. Subscribers: hiraditya, cfe-commits, llvm-commits Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D80692
38 lines
1.9 KiB
C
38 lines
1.9 KiB
C
// Test that SanitizerCoverage works under the new pass manager.
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// RUN: %clang -target x86_64-linux-gnu -fsanitize=fuzzer %s -fexperimental-new-pass-manager -S -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,CHECK-O0
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// RUN: %clang -target x86_64-linux-gnu -fsanitize=fuzzer %s -fexperimental-new-pass-manager -O2 -S -emit-llvm -o - | FileCheck %s --check-prefixes=CHECK,CHECK-O2
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extern void *memcpy(void *, const void *, unsigned long);
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extern int printf(const char *restrict, ...);
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int LLVMFuzzerTestOneInput(const unsigned char *data, unsigned long size) {
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unsigned char buf[4];
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if (size < 8)
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return 0;
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if (data[0] == 'h' && data[1] == 'i' && data[2] == '!') {
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memcpy(buf, data, size);
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printf("test: %.2X\n", buf[0]);
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}
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return 0;
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}
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// CHECK-DAG: declare void @__sanitizer_cov_pcs_init(i64*, i64*)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_pc_indir(i64)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_cmp1(i8 zeroext, i8 zeroext)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_cmp2(i16 zeroext, i16 zeroext)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_cmp4(i32 zeroext, i32 zeroext)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_cmp8(i64, i64)
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// CHECK-O2-NOT: declare void @__sanitizer_cov_trace_const_cmp1(i8 zeroext, i8 zeroext)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_const_cmp2(i16 zeroext, i16 zeroext)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_const_cmp4(i32 zeroext, i32 zeroext)
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// CHECK-O2-NOT: declare void @__sanitizer_cov_trace_const_cmp8(i64, i64)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_div4(i32 zeroext)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_div8(i64)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_gep(i64)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_switch(i64, i64*)
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_pc()
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// CHECK-O0-DAG: declare void @__sanitizer_cov_trace_pc_guard(i32*)
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