prop.ll
1.29 KB
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; RUN: opt -passes=synthetic-counts-propagation -S < %s | FileCheck %s
; CHECK-LABEL: define void @level1a(i32 %n)
; CHECK: !prof ![[COUNT1:[0-9]+]]
define void @level1a(i32 %n) {
entry:
%cmp = icmp sgt i32 %n, 10
br i1 %cmp, label %exit, label %loop
loop:
%i = phi i32 [%n, %entry], [%i1, %loop]
call void @level2a(i32 %n)
%i1 = sub i32 %i, 1
%cmp2 = icmp eq i32 %i1, 0
br i1 %cmp2, label %exit, label %loop, !prof !1
exit:
ret void
}
; CHECK-LABEL: define void @level2a(i32 %n)
; CHECK: !prof ![[COUNT2:[0-9]+]]
define void @level2a(i32 %n) {
call void @level2b(i32 %n)
ret void
}
; CHECK-LABEL: define void @level2b(i32 %n)
; CHECK: !prof ![[COUNT2]]
define void @level2b(i32 %n) {
entry:
call void @level2a(i32 %n)
%cmp = icmp eq i32 %n, 0
br i1 %cmp, label %then, label %else, !prof !2
then:
call void @level3a(i32 %n)
br label %else
else:
ret void
}
; CHECK-LABEL: define internal void @level3a(i32 %n)
; CHECK: !prof ![[COUNT3:[0-9]+]]
define internal void @level3a(i32 %n) {
ret void
}
!1 = !{!"branch_weights", i32 1, i32 99}
!2 = !{!"branch_weights", i32 1, i32 1}
; CHECK: ![[COUNT1]] = !{!"synthetic_function_entry_count", i64 10}
; CHECK: ![[COUNT2]] = !{!"synthetic_function_entry_count", i64 520}
; CHECK: ![[COUNT3]] = !{!"synthetic_function_entry_count", i64 260}