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| author | Rong Xu <xur@google.com> | 2016-01-21 18:11:44 +0000 |
|---|---|---|
| committer | Rong Xu <xur@google.com> | 2016-01-21 18:11:44 +0000 |
| commit | ed9fec736502adf3a8f35a488243c212d640223d (patch) | |
| tree | fccb332cbe1253ca305180a11309d1897148d3c1 /llvm/test/Transforms | |
| parent | 4e971da2723972b589f617301b7c838f00c8e2c7 (diff) | |
| download | bcm5719-llvm-ed9fec736502adf3a8f35a488243c212d640223d.tar.gz bcm5719-llvm-ed9fec736502adf3a8f35a488243c212d640223d.zip | |
[PGO] IR level instrumentation of indirect call value profiling
This patch adds the instrumentation for indirect call value profiling. It finds all the indirect call-sites and generates instrprof_value_profile intrinsic calls. A new opt level option -disable-vp is introduced to disable this instrumentation.
Reviewers: davidxl, betulb, vsk
Differential Revision: http://reviews.llvm.org/D16016
llvm-svn: 258417
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/PGOProfile/indirect_call_profile.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/llvm/test/Transforms/PGOProfile/indirect_call_profile.ll b/llvm/test/Transforms/PGOProfile/indirect_call_profile.ll new file mode 100644 index 00000000000..baac51dd453 --- /dev/null +++ b/llvm/test/Transforms/PGOProfile/indirect_call_profile.ll @@ -0,0 +1,17 @@ +; RUN: opt < %s -pgo-instr-gen -S | FileCheck %s --check-prefix=GEN +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +@bar = external global void ()*, align 8 +; GEN: @__profn_foo = private constant [3 x i8] c"foo" + +define void @foo() { +entry: +; GEN: entry: +; GEN-NEXT: call void @llvm.instrprof.increment(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @__profn_foo, i32 0, i32 0), i64 12884901887, i32 1, i32 0) + %tmp = load void ()*, void ()** @bar, align 8 +; GEN: [[ICALL_TARGET:%[0-9]+]] = ptrtoint void ()* %tmp to i64 +; GEN-NEXT: call void @llvm.instrprof.value.profile(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @__profn_foo, i32 0, i32 0), i64 12884901887, i64 [[ICALL_TARGET]], i32 0, i32 0) + call void %tmp() + ret void +} |
