llvm-6502/test/Bitcode/upgrade-loop-metadata.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

39 lines
1.3 KiB
LLVM

; Test to make sure loop vectorizer metadata is automatically upgraded.
;
; RUN: llvm-dis < %s.bc | FileCheck %s
; RUN: verify-uselistorder < %s.bc
define void @_Z28loop_with_vectorize_metadatav() {
entry:
%i = alloca i32, align 4
store i32 0, i32* %i, align 4
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%0 = load i32* %i, align 4
%cmp = icmp slt i32 %0, 16
br i1 %cmp, label %for.body, label %for.end, !llvm.loop !1
for.body: ; preds = %for.cond
br label %for.inc
for.inc: ; preds = %for.body
%1 = load i32* %i, align 4
%inc = add nsw i32 %1, 1
store i32 %inc, i32* %i, align 4
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
; CHECK: !{!"llvm.loop.interleave.count", i32 4}
; CHECK: !{!"llvm.loop.vectorize.width", i32 8}
; CHECK: !{!"llvm.loop.vectorize.enable", i1 true}
!0 = metadata !{metadata !"clang version 3.5.0 (trunk 211528)"}
!1 = metadata !{metadata !1, metadata !2, metadata !3, metadata !4, metadata !4}
!2 = metadata !{metadata !"llvm.vectorizer.unroll", i32 4}
!3 = metadata !{metadata !"llvm.vectorizer.width", i32 8}
!4 = metadata !{metadata !"llvm.vectorizer.enable", i1 true}