9c6f1538cc
This patch changes cc1 option for PGO profile use from
-fprofile-instr-use=<path> to -fprofile-instrument-use-path=<path>.
-fprofile-instr-use=<path> is now a driver only option.
In addition to decouple the cc1 option from the driver level option, this patch
also enables IR level profile use. cc1 option handling now reads the profile
header and sets CodeGenOpt ProfileUse (valid values are {None, Clang, LLVM}
-- this is a common enum for -fprofile-instrument={}, for the profile
instrumentation), and invoke the pipeline to enable the respective PGO use pass.
Reviewers: silvas, davidxl
Differential Revision: http://reviews.llvm.org/D17737
llvm-svn: 262515
29 lines
825 B
C
29 lines
825 B
C
// Test that outdated data is ignored.
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// FIXME: It would be nice to use -verify here instead of FileCheck, but -verify
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// doesn't play well with warnings that have no line number.
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// RUN: llvm-profdata merge %S/Inputs/c-outdated-data.proftext -o %t.profdata
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// RUN: %clang_cc1 -triple x86_64-apple-macosx10.9 -main-file-name c-outdated-data.c %s -o /dev/null -emit-llvm -fprofile-instrument-use-path=%t.profdata -Wprofile-instr-dropped 2>&1 | FileCheck %s
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// CHECK: warning: profile data may be out of date: of 3 functions, 1 has no data and 1 has mismatched data that will be ignored
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void no_usable_data() {
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int i = 0;
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if (i) {}
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#ifdef GENERATE_OUTDATED_DATA
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if (i) {}
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#endif
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}
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#ifndef GENERATE_OUTDATED_DATA
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void no_data() {
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}
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#endif
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int main(int argc, const char *argv[]) {
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no_usable_data();
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return 0;
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}
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