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llvm-mirror/test/CodeGen/AArch64/analyze-branch.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

232 lines
4.7 KiB
LLVM

; RUN: llc -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s
; This test checks that LLVM can do basic stripping and reapplying of branches
; to basic blocks.
declare void @test_true()
declare void @test_false()
; !0 corresponds to a branch being taken, !1 to not being takne.
!0 = !{!"branch_weights", i32 64, i32 4}
!1 = !{!"branch_weights", i32 4, i32 64}
define void @test_Bcc_fallthrough_taken(i32 %in) nounwind {
; CHECK-LABEL: test_Bcc_fallthrough_taken:
%tst = icmp eq i32 %in, 42
br i1 %tst, label %true, label %false, !prof !0
; CHECK: cmp {{w[0-9]+}}, #42
; CHECK: b.ne [[FALSE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_true
; CHECK: [[FALSE]]:
; CHECK: bl test_false
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_Bcc_fallthrough_nottaken(i32 %in) nounwind {
; CHECK-LABEL: test_Bcc_fallthrough_nottaken:
%tst = icmp eq i32 %in, 42
br i1 %tst, label %true, label %false, !prof !1
; CHECK: cmp {{w[0-9]+}}, #42
; CHECK: b.eq [[TRUE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_false
; CHECK: [[TRUE]]:
; CHECK: bl test_true
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_CBZ_fallthrough_taken(i32 %in) nounwind {
; CHECK-LABEL: test_CBZ_fallthrough_taken:
%tst = icmp eq i32 %in, 0
br i1 %tst, label %true, label %false, !prof !0
; CHECK: cbnz {{w[0-9]+}}, [[FALSE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_true
; CHECK: [[FALSE]]:
; CHECK: bl test_false
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_CBZ_fallthrough_nottaken(i64 %in) nounwind {
; CHECK-LABEL: test_CBZ_fallthrough_nottaken:
%tst = icmp eq i64 %in, 0
br i1 %tst, label %true, label %false, !prof !1
; CHECK: cbz {{x[0-9]+}}, [[TRUE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_false
; CHECK: [[TRUE]]:
; CHECK: bl test_true
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_CBNZ_fallthrough_taken(i32 %in) nounwind {
; CHECK-LABEL: test_CBNZ_fallthrough_taken:
%tst = icmp ne i32 %in, 0
br i1 %tst, label %true, label %false, !prof !0
; CHECK: cbz {{w[0-9]+}}, [[FALSE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_true
; CHECK: [[FALSE]]:
; CHECK: bl test_false
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_CBNZ_fallthrough_nottaken(i64 %in) nounwind {
; CHECK-LABEL: test_CBNZ_fallthrough_nottaken:
%tst = icmp ne i64 %in, 0
br i1 %tst, label %true, label %false, !prof !1
; CHECK: cbnz {{x[0-9]+}}, [[TRUE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_false
; CHECK: [[TRUE]]:
; CHECK: bl test_true
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_TBZ_fallthrough_taken(i32 %in) nounwind {
; CHECK-LABEL: test_TBZ_fallthrough_taken:
%bit = and i32 %in, 32768
%tst = icmp eq i32 %bit, 0
br i1 %tst, label %true, label %false, !prof !0
; CHECK: tbnz {{w[0-9]+}}, #15, [[FALSE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_true
; CHECK: [[FALSE]]:
; CHECK: bl test_false
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_TBZ_fallthrough_nottaken(i64 %in) nounwind {
; CHECK-LABEL: test_TBZ_fallthrough_nottaken:
%bit = and i64 %in, 32768
%tst = icmp eq i64 %bit, 0
br i1 %tst, label %true, label %false, !prof !1
; CHECK: tbz {{[wx][0-9]+}}, #15, [[TRUE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_false
; CHECK: [[TRUE]]:
; CHECK: bl test_true
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_TBNZ_fallthrough_taken(i32 %in) nounwind {
; CHECK-LABEL: test_TBNZ_fallthrough_taken:
%bit = and i32 %in, 32768
%tst = icmp ne i32 %bit, 0
br i1 %tst, label %true, label %false, !prof !0
; CHECK: tbz {{w[0-9]+}}, #15, [[FALSE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_true
; CHECK: [[FALSE]]:
; CHECK: bl test_false
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}
define void @test_TBNZ_fallthrough_nottaken(i64 %in) nounwind {
; CHECK-LABEL: test_TBNZ_fallthrough_nottaken:
%bit = and i64 %in, 32768
%tst = icmp ne i64 %bit, 0
br i1 %tst, label %true, label %false, !prof !1
; CHECK: tbnz {{[wx][0-9]+}}, #15, [[TRUE:.LBB[0-9]+_[0-9]+]]
; CHECK-NEXT: // BB#
; CHECK-NEXT: bl test_false
; CHECK: [[TRUE]]:
; CHECK: bl test_true
true:
call void @test_true()
ret void
false:
call void @test_false()
ret void
}