llvm-6502/test/CodeGen/NVPTX/noduplicate-syncthreads.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

75 lines
2.6 KiB
LLVM

; RUN: opt < %s -O3 -S | FileCheck %s
; Make sure the call to syncthreads is not duplicate here by the LLVM
; optimizations, because it has the noduplicate attribute set.
; CHECK: call void @llvm.cuda.syncthreads
; CHECK-NOT: call void @llvm.cuda.syncthreads
; Function Attrs: nounwind
define void @foo(float* %output) #1 {
entry:
%output.addr = alloca float*, align 8
store float* %output, float** %output.addr, align 8
%0 = load float** %output.addr, align 8
%arrayidx = getelementptr inbounds float* %0, i64 0
%1 = load float* %arrayidx, align 4
%conv = fpext float %1 to double
%cmp = fcmp olt double %conv, 1.000000e+01
br i1 %cmp, label %if.then, label %if.else
if.then: ; preds = %entry
%2 = load float** %output.addr, align 8
%3 = load float* %2, align 4
%conv1 = fpext float %3 to double
%add = fadd double %conv1, 1.000000e+00
%conv2 = fptrunc double %add to float
store float %conv2, float* %2, align 4
br label %if.end
if.else: ; preds = %entry
%4 = load float** %output.addr, align 8
%5 = load float* %4, align 4
%conv3 = fpext float %5 to double
%add4 = fadd double %conv3, 2.000000e+00
%conv5 = fptrunc double %add4 to float
store float %conv5, float* %4, align 4
br label %if.end
if.end: ; preds = %if.else, %if.then
call void @llvm.cuda.syncthreads()
%6 = load float** %output.addr, align 8
%arrayidx6 = getelementptr inbounds float* %6, i64 0
%7 = load float* %arrayidx6, align 4
%conv7 = fpext float %7 to double
%cmp8 = fcmp olt double %conv7, 1.000000e+01
br i1 %cmp8, label %if.then9, label %if.else13
if.then9: ; preds = %if.end
%8 = load float** %output.addr, align 8
%9 = load float* %8, align 4
%conv10 = fpext float %9 to double
%add11 = fadd double %conv10, 3.000000e+00
%conv12 = fptrunc double %add11 to float
store float %conv12, float* %8, align 4
br label %if.end17
if.else13: ; preds = %if.end
%10 = load float** %output.addr, align 8
%11 = load float* %10, align 4
%conv14 = fpext float %11 to double
%add15 = fadd double %conv14, 4.000000e+00
%conv16 = fptrunc double %add15 to float
store float %conv16, float* %10, align 4
br label %if.end17
if.end17: ; preds = %if.else13, %if.then9
ret void
}
; Function Attrs: noduplicate nounwind
declare void @llvm.cuda.syncthreads() #2
!0 = !{void (float*)* @foo, !"kernel", i32 1}
!1 = !{null, !"align", i32 8}