cae033dcf2
We have several situations where it's beneficial for code size to ensure that every call to always-inline functions are inlined before normal inlining decisions are made. While the normal inliner runs in a "MandatoryOnly" mode to try to do this, it only does it on a per-SCC basis, rather than the whole module. Ensuring that all mandatory inlinings are done before any heuristic based decisions are made just makes sense. Despite being referred to the "legacy" AlwaysInliner pass, it's already necessary for -O0 because the CGSCC inliner is too expensive in compile time to run at -O0. This also fixes an exponential compile time blow up in https://github.com/llvm/llvm-project/issues/59126 Differential Revision: https://reviews.llvm.org/D143624
59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/// We support coverage versions 3.4, 4.7 and 4.8.
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/// 3.4 redesigns the format and changed .da to .gcda
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/// 4.7 enables cfg_checksum.
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/// 4.8 (default, compatible with gcov 7) emits the exit block the second.
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// RUN: %clang_cc1 -emit-llvm -disable-red-zone -fprofile-arcs -coverage-version='304*' %s -o - | \
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// RUN: FileCheck --check-prefixes=CHECK,304 %s
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// RUN: %clang_cc1 -emit-llvm -disable-red-zone -fprofile-arcs -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 -fprofile-arcs %s -o - | \
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// RUN: FileCheck --check-prefixes=CHECK,408 %s
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// RUN: %clang_cc1 -emit-llvm -disable-red-zone -fprofile-arcs -coverage-notes-file=aaa.gcno -coverage-data-file=bbb.gcda -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 -fdebug-pass-manager -fprofile-arcs %s 2>&1 | FileCheck --check-prefix=NEWPM %s
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// RUN: %clang_cc1 -emit-llvm-bc -o /dev/null -fdebug-pass-manager -fprofile-arcs -O3 %s 2>&1 | FileCheck --check-prefix=NEWPM-O3 %s
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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: Annotation2MetadataPass
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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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// CHECK: @__llvm_internal_gcov_emit_function_args.0 = internal unnamed_addr constant [2 x %emit_function_args_ty]
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// CHECK-SAME: [%emit_function_args_ty { i32 0, i32 {{[-0-9]+}}, i32 {{[-0-9]+}} }, %emit_function_args_ty { i32 1, i32 {{[-0-9]+}}, i32 {{[-0-9]+}} }]
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// CHECK: @__llvm_internal_gcov_emit_file_info = internal unnamed_addr constant [1 x %file_info]
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/// 0x3330342a '3' '0' '4' '*'
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// 304-SAME: i32 858797098
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/// 0x3430372a '4' '0' '7' '*'
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// 407-SAME: i32 875575082
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/// 0x3430382a '4' '0' '8' '*'
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// 408-SAME: i32 875575338
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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_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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