40 lines
898 B
LLVM
40 lines
898 B
LLVM
|
; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s
|
||
|
|
|
||
|
|
define void @test(i1 %cnd) !prof !{!"function_entry_count", i64 1024} {
|
||
|
|
; CHECK-LABEL: @test
|
||
|
|
; Using the assembly comments to indicate block order..
|
||
|
|
; CHECK: # %loop
|
||
|
|
; CHECK: # %backedge
|
||
|
|
; CHECK: # %exit
|
||
|
|
; CHECK: # %rare
|
||
|
|
; CHECK: # %rare.1
|
||
|
|
|
||
|
|
br i1 undef, label %rare.1, label %preheader, !prof !{!"branch_weights", i32 0, i32 1000}
|
||
|
|
rare.1:
|
||
|
|
call void @foo()
|
||
|
|
br label %preheader
|
||
|
|
|
||
|
|
preheader:
|
||
|
|
br label %loop
|
||
|
|
|
||
|
|
loop:
|
||
|
|
%iv = phi i32 [0, %preheader], [%iv.next, %backedge]
|
||
|
|
call void @foo()
|
||
|
|
br i1 %cnd, label %backedge, label %rare, !prof !{!"branch_weights", i32 1000000, i32 1}
|
||
|
|
rare:
|
||
|
|
call void @foo()
|
||
|
|
br label %backedge
|
||
|
|
backedge:
|
||
|
|
call void @foo()
|
||
|
|
%iv.next = add i32 %iv, 1
|
||
|
|
%cmp = icmp eq i32 %iv.next, 200
|
||
|
|
br i1 %cmp, label %loop, label %exit, !prof !{!"branch_weights", i32 1000, i32 1}
|
||
|
|
|
||
|
|
exit:
|
||
|
|
ret void
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
declare void @foo()
|