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llvm-mirror/test/CodeGen/X86/misched-copy.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

50 lines
1.7 KiB
LLVM

; REQUIRES: asserts
; RUN: llc < %s -march=x86 -mcpu=core2 -pre-RA-sched=source -enable-misched -verify-misched -debug-only=misched -o - 2>&1 > /dev/null | FileCheck %s
;
; Test scheduling of copy instructions.
;
; Argument copies should be hoisted to the top of the block.
; Return copies should be sunk to the end.
; MUL_HiLo PhysReg use copies should be just above the mul.
; MUL_HiLo PhysReg def copies should be just below the mul.
;
; CHECK: *** Final schedule for BB#1 ***
; CHECK: %EAX<def> = COPY
; CHECK-NEXT: MUL32r %vreg{{[0-9]+}}, %EAX<imp-def>, %EDX<imp-def>, %EFLAGS<imp-def,dead>, %EAX<imp-use>;
; CHECK-NEXT: COPY %E{{[AD]}}X
; CHECK-NEXT: COPY %E{{[AD]}}X
; CHECK: DIVSSrm
define i64 @mulhoist(i32 %a, i32 %b) #0 {
entry:
br label %body
body:
%convb = sitofp i32 %b to float
; Generates an iMUL64r to legalize types.
%aa = zext i32 %a to i64
%mul = mul i64 %aa, 74383
; Do some dependent long latency stuff.
%trunc = trunc i64 %mul to i32
%convm = sitofp i32 %trunc to float
%divm = fdiv float %convm, 0.75
;%addmb = fadd float %divm, %convb
;%divmb = fdiv float %addmb, 0.125
; Do some independent long latency stuff.
%conva = sitofp i32 %a to float
%diva = fdiv float %conva, 0.75
%addab = fadd float %diva, %convb
%divab = fdiv float %addab, 0.125
br label %end
end:
%val = fptosi float %divab to i64
%add = add i64 %mul, %val
ret i64 %add
}
attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
!0 = !{!"float", !1}
!1 = !{!"omnipotent char", !2}
!2 = !{!"Simple C/C++ TBAA"}