llvm-6502/test/Analysis/BlockFrequencyInfo/extremely-likely-loop-successor.ll
Duncan P. N. Exon Smith 1ef70ff39b IR: Make metadata typeless in assembly
Now that `Metadata` is typeless, reflect that in the assembly.  These
are the matching assembly changes for the metadata/value split in
r223802.

  - Only use the `metadata` type when referencing metadata from a call
    intrinsic -- i.e., only when it's used as a `Value`.

  - Stop pretending that `ValueAsMetadata` is wrapped in an `MDNode`
    when referencing it from call intrinsics.

So, assembly like this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata !{i32 %v}, metadata !0)
      call void @llvm.foo(metadata !{i32 7}, metadata !0)
      call void @llvm.foo(metadata !1, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{metadata !3}, metadata !0)
      ret void, !bar !2
    }
    !0 = metadata !{metadata !2}
    !1 = metadata !{i32* @global}
    !2 = metadata !{metadata !3}
    !3 = metadata !{}

turns into this:

    define @foo(i32 %v) {
      call void @llvm.foo(metadata i32 %v, metadata !0)
      call void @llvm.foo(metadata i32 7, metadata !0)
      call void @llvm.foo(metadata i32* @global, metadata !0)
      call void @llvm.foo(metadata !3, metadata !0)
      call void @llvm.foo(metadata !{!3}, metadata !0)
      ret void, !bar !2
    }
    !0 = !{!2}
    !1 = !{i32* @global}
    !2 = !{!3}
    !3 = !{}

I wrote an upgrade script that handled almost all of the tests in llvm
and many of the tests in cfe (even handling many `CHECK` lines).  I've
attached it (or will attach it in a moment if you're speedy) to PR21532
to help everyone update their out-of-tree testcases.

This is part of PR21532.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224257 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-15 19:07:53 +00:00

41 lines
1.1 KiB
LLVM

; RUN: opt < %s -analyze -block-freq | FileCheck %s
; PR21622: Check for a crasher when the sum of exits to the same successor of a
; loop overflows.
; CHECK-LABEL: Printing analysis {{.*}} for function 'extremely_likely_loop_successor':
; CHECK-NEXT: block-frequency-info: extremely_likely_loop_successor
define void @extremely_likely_loop_successor() {
; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]]
entry:
br label %loop
; CHECK-NEXT: loop: float = 1.0,
loop:
%exit.1.cond = call i1 @foo()
br i1 %exit.1.cond, label %exit, label %loop.2, !prof !0
; CHECK-NEXT: loop.2: float = 0.0000000
loop.2:
%exit.2.cond = call i1 @foo()
br i1 %exit.2.cond, label %exit, label %loop.3, !prof !0
; CHECK-NEXT: loop.3: float = 0.0000000
loop.3:
%exit.3.cond = call i1 @foo()
br i1 %exit.3.cond, label %exit, label %loop.4, !prof !0
; CHECK-NEXT: loop.4: float = 0.0,
loop.4:
%exit.4.cond = call i1 @foo()
br i1 %exit.4.cond, label %exit, label %loop, !prof !0
; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]]
exit:
ret void
}
declare i1 @foo()
!0 = !{!"branch_weights", i32 4294967295, i32 1}