llvm-6502/test/Transforms/SimplifyCFG/basictest.ll

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; Test CFG simplify removal of branch instructions.
;
; RUN: opt < %s -simplifycfg -S | FileCheck %s
define void @test1() {
br label %1
ret void
; CHECK-LABEL: @test1(
; CHECK-NEXT: ret void
}
define void @test2() {
ret void
ret void
; CHECK-LABEL: @test2(
; CHECK-NEXT: ret void
; CHECK-NEXT: }
}
define void @test3(i1 %T) {
br i1 %T, label %1, label %1
ret void
; CHECK-LABEL: @test3(
; CHECK-NEXT: ret void
}
; PR5795
define void @test5(i32 %A) {
switch i32 %A, label %return [
i32 2, label %1
i32 10, label %2
]
ret void
ret void
return: ; preds = %entry
ret void
; CHECK-LABEL: @test5(
; CHECK-NEXT: ret void
}
; PR14893
define i8 @test6f() {
; CHECK-LABEL: @test6f
; CHECK: alloca i8, align 1
; CHECK-NEXT: call i8 @test6g
; CHECK-NEXT: icmp eq i8 %tmp, 0
; CHECK-NEXT: load i8* %r, align 1{{$}}
bb0:
%r = alloca i8, align 1
%tmp = call i8 @test6g(i8* %r)
%tmp1 = icmp eq i8 %tmp, 0
br i1 %tmp1, label %bb2, label %bb1
bb1:
%tmp3 = load i8* %r, align 1, !range !2, !tbaa !1
%tmp4 = icmp eq i8 %tmp3, 1
br i1 %tmp4, label %bb2, label %bb3
bb2:
br label %bb3
bb3:
%tmp6 = phi i8 [ 0, %bb2 ], [ 1, %bb1 ]
ret i8 %tmp6
}
declare i8 @test6g(i8*)
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
!0 = !{!1, !1, i64 0}
!1 = !{!"foo"}
!2 = !{i8 0, i8 2}