6329355860
We have a textual representation of contextual profiles for test scenarios, mainly. This patch moves that to YAML instead of JSON. YAML is more succinct and readable (some of the .ll tests should be illustrative). In addition, JSON is parse-able by the YAML reader. A subsequent patch will address deserialization. (thanks, @kazutakahirata, for showing me how to use the llvm YAML reader/writer APIs, which I incorrectly thought to be more low-level than the JSON ones!)
57 lines
1.5 KiB
LLVM
57 lines
1.5 KiB
LLVM
; Check that flattened profile lowering handles cold subgraphs that end in "unreachable"
|
|
; RUN: split-file %s %t
|
|
; RUN: llvm-ctxprof-util fromYAML --input=%t/profile.yaml --output=%t/profile.ctxprofdata
|
|
; RUN: opt -passes=ctx-prof-flatten %t/example.ll -use-ctx-profile=%t/profile.ctxprofdata -S -o - | FileCheck %s
|
|
|
|
; CHECK-LABEL: entry:
|
|
; CHECK: br i1 %t, label %yes, label %no, !prof ![[C1:[0-9]+]]
|
|
; CHECK-LABEL: no:
|
|
; CHECK-NOT: !prof
|
|
; CHECK-LABEL: no1:
|
|
; CHECK-NOT: !prof
|
|
; CHECK-LABEL: no2:
|
|
; CHECK-NOT: !prof
|
|
; CHECK-LABEL: yes:
|
|
; CHECK: br i1 %t3, label %yes1, label %yes2, !prof ![[C1]]
|
|
; CHECK-NOT: !prof
|
|
; CHECK: ![[C1]] = !{!"branch_weights", i32 6, i32 0}
|
|
|
|
;--- example.ll
|
|
define void @f1(i32 %cond) !guid !0 {
|
|
entry:
|
|
call void @llvm.instrprof.increment(ptr @f1, i64 42, i32 42, i32 0)
|
|
%t = icmp eq i32 %cond, 1
|
|
br i1 %t, label %yes, label %no
|
|
|
|
no:
|
|
%t2 = icmp eq i32 %cond, 2
|
|
br i1 %t2, label %no1, label %no2
|
|
no1:
|
|
unreachable
|
|
no2:
|
|
call void @llvm.instrprof.increment(ptr @f1, i64 42, i32 42, i32 1)
|
|
unreachable
|
|
yes:
|
|
%t3 = icmp eq i32 %cond, 3
|
|
br i1 %t3, label %yes1, label %yes2
|
|
yes1:
|
|
br label %exit
|
|
yes2:
|
|
call void @llvm.instrprof.increment(ptr @f1, i64 42, i32 42, i32 2)
|
|
%t4 = icmp eq i32 %cond, 4
|
|
br i1 %t4, label %yes3, label %yes4
|
|
yes3:
|
|
br label %exit
|
|
yes4:
|
|
call void @llvm.instrprof.increment(ptr @f1, i64 42, i32 42, i32 3)
|
|
unreachable
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
!0 = !{i64 1234}
|
|
|
|
;--- profile.yaml
|
|
- Guid: 1234
|
|
Counters: [6,0,0,0]
|