6b3351792c
For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie
and COFF, but not for Mach-O. This nuance causes unneeded binary format differences.
This patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `
if there is an explicit linkage.
* Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar.
* Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-captured.c %s -o - -emit-llvm -fprofile-instrument=clang | FileCheck -allow-deprecated-dag-overlap -check-prefix=PGOGEN -check-prefix=PGOALL %s
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// RUN: llvm-profdata merge %S/Inputs/c-captured.proftext -o %t.profdata
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// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-captured.c %s -o - -emit-llvm -fprofile-instrument-use-path=%t.profdata | FileCheck -allow-deprecated-dag-overlap -check-prefix=PGOUSE -check-prefix=PGOALL %s
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// PGOGEN: @[[DCC:__profc_debug_captured]] = private global [3 x i64] zeroinitializer
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// PGOGEN: @[[CSC:__profc_c_captured.c___captured_stmt]] = private global [2 x i64] zeroinitializer
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// PGOGEN: @[[C1C:__profc_c_captured.c___captured_stmt.1]] = private global [3 x i64] zeroinitializer
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// PGOALL-LABEL: define{{.*}} void @debug_captured()
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// PGOGEN: store {{.*}} @[[DCC]], i64 0, i64 0
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void debug_captured() {
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int x = 10;
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// Check both debug_captured counters, so we can do this all in one pass
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// PGOGEN: store {{.*}} @[[DCC]], i64 0, i64 1
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// PGOUSE: br {{.*}} !prof ![[DC1:[0-9]+]]
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// PGOGEN: store {{.*}} @[[DCC]], i64 0, i64 2
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// PGOUSE: br {{.*}} !prof ![[DC2:[0-9]+]]
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// PGOALL: ret
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// PGOALL-LABEL: define internal void @__captured_stmt(
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// PGOGEN: store {{.*}} @[[CSC]], i64 0, i64 0
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#pragma clang __debug captured
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{
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// PGOGEN: store {{.*}} @[[CSC]], i64 0, i64 1
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// PGOUSE: br {{.*}} !prof ![[CS1:[0-9]+]]
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if (x) {}
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// PGOALL: ret
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}
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if (x) {} // This is DC1. Checked above.
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// PGOALL-LABEL: define internal void @__captured_stmt.1(
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// PGOGEN: store {{.*}} @[[C1C]], i64 0, i64 0
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#pragma clang __debug captured
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{
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// PGOGEN: store {{.*}} @[[C1C]], i64 0, i64 1
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// PGOUSE: br {{.*}} !prof ![[C11:[0-9]+]]
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for (int i = 0; i < x; ++i) {}
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// PGOGEN: store {{.*}} @[[C1C]], i64 0, i64 2
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// PGOUSE: br {{.*}} !prof ![[C12:[0-9]+]]
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if (x) {}
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// PGOALL: ret
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}
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if (x) {} // This is DC2. Checked above.
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}
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// PGOUSE-DAG: ![[DC1]] = !{!"branch_weights", i32 2, i32 1}
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// PGOUSE-DAG: ![[DC2]] = !{!"branch_weights", i32 2, i32 1}
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// PGOUSE-DAG: ![[CS1]] = !{!"branch_weights", i32 2, i32 1}
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// PGOUSE-DAG: ![[C11]] = !{!"branch_weights", i32 11, i32 2}
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// PGOUSE-DAG: ![[C12]] = !{!"branch_weights", i32 2, i32 1}
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int main(int argc, const char *argv[]) {
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debug_captured();
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return 0;
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}
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