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llvm-project/clang/test/Profile/c-unreachable-after-switch.c

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[PGO] cc1 option name change for profile instrumentation This patch changes cc1 option -fprofile-instr-generate to an enum option -fprofile-instrument={clang|none}. It also changes cc1 options -fprofile-instr-generate= to -fprofile-instrument-path=. The driver level option -fprofile-instr-generate and -fprofile-instr-generate= remain intact. This change will pave the way to integrate new PGO instrumentation in IR level. Review: http://reviews.llvm.org/D16730 llvm-svn: 259811
2016-02-05 02:39:09 +08:00
// RUN: %clang_cc1 -O3 -triple x86_64-apple-macosx10.10 -main-file-name c-unreachable-after-switch.c %s -o - -emit-llvm -fprofile-instrument=clang | FileCheck %s
InstrProf: Don't emit counter increments in dead code We were previously emitting counter increments even if we didn't have an insertion point, which would result in a CallInst with no parent. This leads to a crash, as in pr22166, if we try to do GlobalDCE. llvm-svn: 225495
2015-01-09 09:46:40 +08:00
[PGO] make profile prefix even shorter and more readable llvm-svn: 255587
2015-12-15 08:33:12 +08:00
// CHECK: @[[C:__profc_foo]] = private global [3 x i64] zeroinitializer
InstrProf: Don't emit counter increments in dead code We were previously emitting counter increments even if we didn't have an insertion point, which would result in a CallInst with no parent. This leads to a crash, as in pr22166, if we try to do GlobalDCE. llvm-svn: 225495
2015-01-09 09:46:40 +08:00
// CHECK-LABEL: @foo()
// CHECK: store {{.*}} @[[C]], i64 0, i64 0
void foo() {
// CHECK: store {{.*}} @[[C]], i64 0, i64 2
switch (0) {
default:
return;
}
// We shouldn't emit the unreachable counter. This used to crash in GlobalDCE.
// CHECK-NOT: store {{.*}} @[[SWC]], i64 0, i64 1}
}