-; Test CFG simplify removal of branch instructions...
+; Test CFG simplify removal of branch instructions.
;
-; RUN: if as < %s | opt -dce | dis | grep br
-; RUN: then exit 1
-; RUN: else exit 0
-; RUN: fi
+; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -passes=simplify-cfg -S | FileCheck %s
+define void @test1() {
+ br label %1
+ ret void
+; CHECK-LABEL: @test1(
+; CHECK-NEXT: ret void
+}
-void "test1"() {
- br label %BB1
-BB1:
- ret void
+define void @test2() {
+ ret void
+ ret void
+; CHECK-LABEL: @test2(
+; CHECK-NEXT: ret void
+; CHECK-NEXT: }
}
-void "test2"() {
- ret void
-BB1:
- ret void
+define void @test3(i1 %T) {
+ br i1 %T, label %1, label %1
+ ret void
+; CHECK-LABEL: @test3(
+; CHECK-NEXT: ret void
}
-void "test3"(bool %T) {
- br bool %T, label %BB1, label %BB1
-BB1:
- 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, i8* %r, align 1, !dbg !{{[0-9]+$}}
+
+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, i8* %r, align 1, !range !2, !tbaa !1, !dbg !5
+ %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*)
+!llvm.dbg.cu = !{!3}
+!llvm.module.flags = !{!8, !9}
+!0 = !{!1, !1, i64 0}
+!1 = !{!"foo"}
+!2 = !{i8 0, i8 2}
+!3 = distinct !DICompileUnit(language: DW_LANG_C99, file: !7, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !4, subprograms: !4, globals: !4)
+!4 = !{}
+!5 = !DILocation(line: 23, scope: !6)
+!6 = distinct !DISubprogram(name: "foo", scope: !3, file: !7, line: 1, type: !DISubroutineType(types: !4), isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, variables: !4)
+!7 = !DIFile(filename: "foo.c", directory: "/")
+!8 = !{i32 2, !"Dwarf Version", i32 2}
+!9 = !{i32 2, !"Debug Info Version", i32 3}