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llvm-mirror/test/Analysis/BlockFrequencyInfo/nested_loop_with_branches.ll
Duncan P. N. Exon Smith 9c5542c040 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.

llvm-svn: 224257
2014-12-15 19:07:53 +00:00

60 lines
1.6 KiB
LLVM

; RUN: opt < %s -analyze -block-freq | FileCheck %s
; CHECK-LABEL: Printing analysis {{.*}} for function 'nested_loop_with_branches'
; CHECK-NEXT: block-frequency-info: nested_loop_with_branches
define void @nested_loop_with_branches(i32 %a) {
; CHECK-NEXT: entry: float = 1.0, int = [[ENTRY:[0-9]+]]
entry:
%v0 = call i1 @foo0(i32 %a)
br i1 %v0, label %exit, label %outer, !prof !0
; CHECK-NEXT: outer: float = 12.0,
outer:
%i = phi i32 [ 0, %entry ], [ %i.next, %inner.end ], [ %i.next, %no_inner ]
%i.next = add i32 %i, 1
%do_inner = call i1 @foo1(i32 %i)
br i1 %do_inner, label %no_inner, label %inner, !prof !0
; CHECK-NEXT: inner: float = 36.0,
inner:
%j = phi i32 [ 0, %outer ], [ %j.next, %inner.end ]
%side = call i1 @foo3(i32 %j)
br i1 %side, label %left, label %right, !prof !0
; CHECK-NEXT: left: float = 9.0,
left:
%v4 = call i1 @foo4(i32 %j)
br label %inner.end
; CHECK-NEXT: right: float = 27.0,
right:
%v5 = call i1 @foo5(i32 %j)
br label %inner.end
; CHECK-NEXT: inner.end: float = 36.0,
inner.end:
%stay_inner = phi i1 [ %v4, %left ], [ %v5, %right ]
%j.next = add i32 %j, 1
br i1 %stay_inner, label %inner, label %outer, !prof !1
; CHECK-NEXT: no_inner: float = 3.0,
no_inner:
%continue = call i1 @foo6(i32 %i)
br i1 %continue, label %outer, label %exit, !prof !1
; CHECK-NEXT: exit: float = 1.0, int = [[ENTRY]]
exit:
ret void
}
declare i1 @foo0(i32)
declare i1 @foo1(i32)
declare i1 @foo2(i32)
declare i1 @foo3(i32)
declare i1 @foo4(i32)
declare i1 @foo5(i32)
declare i1 @foo6(i32)
!0 = !{!"branch_weights", i32 1, i32 3}
!1 = !{!"branch_weights", i32 3, i32 1}