llvm-6502/test/CodeGen/X86/slow-incdec.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

81 lines
2.8 KiB
LLVM

; RUN: llc -mtriple=i386-unknown-linux-gnu -mattr=-slow-incdec < %s | FileCheck -check-prefix=INCDEC %s
; RUN: llc -mtriple=i386-unknown-linux-gnu -mattr=+slow-incdec < %s | FileCheck -check-prefix=ADD %s
; check -mattr=-slow-incdec
; INCDEC-NOT: addl $-1
; INCDEC: dec
; INCDEC-NOT: addl $1
; INCDEC: inc
; check -mattr=+slow-incdec
; ADD: addl $-1
; ADD-NOT: dec
; ADD: addl $1
; ADD-NOT: inc
; Function Attrs: nounwind readonly
define i32 @slow_1(i32* nocapture readonly %a, i32 %s) #0 {
entry:
%cmp5 = icmp eq i32 %s, 0
br i1 %cmp5, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
br label %for.body
for.cond: ; preds = %for.body
%cmp = icmp eq i32 %dec, 0
br i1 %cmp, label %for.end.loopexit, label %for.body
for.body: ; preds = %for.body.preheader, %for.cond
%i.06 = phi i32 [ %dec, %for.cond ], [ %s, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32* %a, i32 %i.06
%0 = load i32* %arrayidx, align 4, !tbaa !1
%cmp1 = icmp eq i32 %0, 0
;
%dec = add nsw i32 %i.06, -1
br i1 %cmp1, label %for.end.loopexit, label %for.cond
for.end.loopexit: ; preds = %for.cond, %for.body
%i.0.lcssa.ph = phi i32 [ 0, %for.cond ], [ %i.06, %for.body ]
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%i.0.lcssa = phi i32 [ 0, %entry ], [ %i.0.lcssa.ph, %for.end.loopexit ]
ret i32 %i.0.lcssa
}
; Function Attrs: nounwind readonly
define i32 @slow_2(i32* nocapture readonly %a, i32 %s) #0 {
entry:
%cmp5 = icmp eq i32 %s, 0
br i1 %cmp5, label %for.end, label %for.body.preheader
for.body.preheader: ; preds = %entry
br label %for.body
for.cond: ; preds = %for.body
%cmp = icmp eq i32 %inc, 0
br i1 %cmp, label %for.end.loopexit, label %for.body
for.body: ; preds = %for.body.preheader, %for.cond
%i.06 = phi i32 [ %inc, %for.cond ], [ %s, %for.body.preheader ]
%arrayidx = getelementptr inbounds i32* %a, i32 %i.06
%0 = load i32* %arrayidx, align 4, !tbaa !1
%cmp1 = icmp eq i32 %0, 0
%inc = add nsw i32 %i.06, 1
br i1 %cmp1, label %for.end.loopexit, label %for.cond
for.end.loopexit: ; preds = %for.cond, %for.body
%i.0.lcssa.ph = phi i32 [ 0, %for.cond ], [ %i.06, %for.body ]
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
%i.0.lcssa = phi i32 [ 0, %entry ], [ %i.0.lcssa.ph, %for.end.loopexit ]
ret i32 %i.0.lcssa
}
!1 = !{!2, !2, i64 0}
!2 = !{!"int", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}