25544ce2df
Defaulting to -Xclang -coverage-version='407*' makes .gcno/.gcda compatible with gcov [4.7,8) In addition, delete clang::CodeGenOptionsBase::CoverageExtraChecksum and GCOVOptions::UseCfgChecksum. We can infer the information from the version. With this change, .gcda files produced by `clang --coverage a.o` linked executable can be read by gcov 4.7~7. We don't need other -Xclang -coverage* options. There may be a mismatching version warning, though. (Note, GCC r173147 "split checksum into cfg checksum and line checksum" made gcov 4.7 incompatible with previous versions.)
53 lines
2.1 KiB
C
53 lines
2.1 KiB
C
/// We support coverage versions 4.2 and 4.7.
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/// 4.7 (default, compatible with gcov 7) enables cfg_checksum.
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// RUN: %clang_cc1 -emit-llvm -disable-red-zone -femit-coverage-data -coverage-version='402*' %s -o - | \
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// RUN: FileCheck --check-prefixes=CHECK,402 %s
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// RUN: %clang_cc1 -emit-llvm -disable-red-zone -femit-coverage-data -coverage-version='407*' %s -o - | \
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// RUN: FileCheck --check-prefixes=CHECK,407 %s
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// RUN: %clang_cc1 -emit-llvm -disable-red-zone -femit-coverage-data %s -o - | \
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// RUN: FileCheck --check-prefixes=CHECK,407 %s
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// RUN: %clang_cc1 -emit-llvm -disable-red-zone -femit-coverage-data -coverage-notes-file=aaa.gcno -coverage-data-file=bbb.gcda -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 %s -o - | FileCheck %s --check-prefix GCOV_FILE_INFO
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// RUN: %clang_cc1 -emit-llvm-bc -o /dev/null -fexperimental-new-pass-manager -fdebug-pass-manager -femit-coverage-data %s 2>&1 | FileCheck --check-prefix=NEWPM %s
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// RUN: %clang_cc1 -emit-llvm-bc -o /dev/null -fexperimental-new-pass-manager -fdebug-pass-manager -femit-coverage-data -O3 %s 2>&1 | FileCheck --check-prefix=NEWPM-O3 %s
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// NEWPM-NOT: Running pass
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// NEWPM: Running pass: GCOVProfilerPass
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// NEWPM-O3-NOT: Running pass
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// NEWPM-O3: Running pass: ForceFunctionAttrsPass
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// NEWPM-O3: Running pass: GCOVProfilerPass
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int test1(int a) {
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switch (a % 2) {
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case 0:
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++a;
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case 1:
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a /= 2;
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}
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return a;
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}
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int test2(int b) {
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return b * 2;
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}
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// 402: private unnamed_addr constant [5 x i8] c"*204\00"
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// 407: private unnamed_addr constant [5 x i8] c"*704\00"
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// CHECK: @__llvm_internal_gcov_emit_function_args.0 = internal unnamed_addr constant [2 x %0]
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// CHECK-SAME: [%0 zeroinitializer, %0 { i32 1, i32 0, i32 0 }]
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// Check that the noredzone flag is set on the generated functions.
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// CHECK: void @__llvm_gcov_writeout() unnamed_addr [[NRZ:#[0-9]+]]
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// CHECK: void @__llvm_gcov_flush() unnamed_addr [[NRZ]]
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// CHECK: void @__llvm_gcov_init() unnamed_addr [[NRZ]]
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// CHECK: attributes [[NRZ]] = { {{.*}}noredzone{{.*}} }
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// GCOV_FILE_INFO: !llvm.gcov = !{![[GCOV:[0-9]+]]}
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// GCOV_FILE_INFO: ![[GCOV]] = !{!"aaa.gcno", !"bbb.gcda", !{{[0-9]+}}}
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