llvm-6502/test/Transforms/IndVarSimplify/sharpen-range.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

114 lines
2.4 KiB
LLVM

;; RUN: opt -S < %s -indvars | FileCheck %s
;; Check if llvm can narrow !range metadata based on loop entry
;; predicates.
declare void @abort()
define i1 @bounded_below_slt(i32* nocapture readonly %buffer) {
; CHECK-LABEL: bounded_below_slt
entry:
%length = load i32* %buffer, !range !0
%entry.pred = icmp eq i32 %length, 0
br i1 %entry.pred, label %abort, label %loop.preheader
loop.preheader:
br label %loop
loop:
; CHECK: loop
%idx = phi i32 [ %idx.inc, %loop.next ], [ 0, %loop.preheader ]
%oob.pred = icmp slt i32 %idx, %length
br i1 %oob.pred, label %loop.next, label %oob
; CHECK: br i1 true, label %loop.next, label %oob
loop.next:
; CHECK: loop.next
%idx.inc = add i32 %idx, 1
%exit.pred = icmp slt i32 %idx.inc, %length
br i1 %exit.pred, label %loop, label %abort.loopexit
abort.loopexit:
br label %abort
abort:
ret i1 false
oob:
tail call void @abort()
ret i1 false
}
define i1 @bounded_below_sle(i32* nocapture readonly %buffer) {
; CHECK-LABEL: bounded_below_sle
entry:
%length = load i32* %buffer, !range !0
%entry.pred = icmp eq i32 %length, 0
br i1 %entry.pred, label %abort, label %loop.preheader
loop.preheader:
br label %loop
loop:
; CHECK: loop
%idx = phi i32 [ %idx.inc, %loop.next ], [ 0, %loop.preheader ]
%oob.pred = icmp sle i32 %idx, %length
br i1 %oob.pred, label %loop.next, label %oob
; CHECK: br i1 true, label %loop.next, label %oob
loop.next:
; CHECK: loop.next
%idx.inc = add i32 %idx, 1
%exit.pred = icmp sle i32 %idx.inc, %length
br i1 %exit.pred, label %loop, label %abort.loopexit
abort.loopexit:
br label %abort
abort:
ret i1 false
oob:
tail call void @abort()
ret i1 false
}
;; Assert that we're not making an incorrect transform.
declare i32 @check(i8*)
define void @NoChange() {
; CHECK-LABEL: NoChange
entry:
br label %loop.begin
loop.begin:
; CHECK: loop.begin:
%i.01 = phi i64 [ 2, %entry ], [ %add, %loop.end ]
%cmp = icmp ugt i64 %i.01, 1
; CHECK: %cmp = icmp ugt i64 %i.01, 1
br i1 %cmp, label %loop, label %loop.end
loop:
; CHECK: loop
%.sum = add i64 %i.01, -2
%v = getelementptr inbounds i8* null, i64 %.sum
%r = tail call i32 @check(i8* %v)
%c = icmp eq i32 %r, 0
br i1 %c, label %loop.end, label %abort.now
abort.now:
tail call void @abort()
unreachable
loop.end:
%add = add i64 %i.01, -1
%eq = icmp eq i64 %add, 0
br i1 %eq, label %exit, label %loop.begin
exit:
ret void
}
!0 = !{i32 0, i32 100}