phi-translate.ll
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; RUN: opt -basicaa -gvn -S < %s | FileCheck %s
target datalayout = "e-p:64:64:64"
; CHECK-LABEL: @foo(
; CHECK: entry.end_crit_edge:
; CHECK: %[[INDEX:[a-z0-9.]+]] = sext i32 %x to i64{{.*}} !dbg [[ZERO_LOC:![0-9]+]]
; CHECK: %[[ADDRESS:[a-z0-9.]+]] = getelementptr [100 x i32], [100 x i32]* @G, i64 0, i64 %[[INDEX]]{{.*}} !dbg [[ZERO_LOC]]
; CHECK: %n.pre = load i32, i32* %[[ADDRESS]], !dbg [[N_LOC:![0-9]+]]
; CHECK: br label %end
; CHECK: then:
; CHECK: store i32 %z
; CHECK: end:
; CHECK: %n = phi i32 [ %n.pre, %entry.end_crit_edge ], [ %z, %then ], !dbg [[N_LOC]]
; CHECK: ret i32 %n
; CHECK-DAG: [[N_LOC]] = !DILocation(line: 47, column: 1, scope: !{{.*}})
; CHECK-DAG: [[ZERO_LOC]] = !DILocation(line: 0
@G = external global [100 x i32]
define i32 @foo(i32 %x, i32 %z) !dbg !6 {
entry:
%tobool = icmp eq i32 %z, 0, !dbg !7
br i1 %tobool, label %end, label %then, !dbg !7
then:
%i = sext i32 %x to i64, !dbg !8
%p = getelementptr [100 x i32], [100 x i32]* @G, i64 0, i64 %i, !dbg !8
store i32 %z, i32* %p, !dbg !8
br label %end, !dbg !8
end:
%j = sext i32 %x to i64, !dbg !9
%q = getelementptr [100 x i32], [100 x i32]* @G, i64 0, i64 %j, !dbg !10
%n = load i32, i32* %q, !dbg !11
ret i32 %n, !dbg !11
}
!llvm.module.flags = !{!0, !1, !2}
!llvm.dbg.cu = !{!12}
!0 = !{i32 2, !"Dwarf Version", i32 4}
!1 = !{i32 2, !"Debug Info Version", i32 3}
!2 = !{i32 1, !"PIC Level", i32 2}
!3 = !{}
!4 = !DISubroutineType(types: !3)
!5 = !DIFile(filename: "a.cc", directory: "/tmp")
!6 = distinct !DISubprogram(name: "foo", scope: !5, file: !5, line: 42, type: !4, isLocal: false, isDefinition: true, scopeLine: 43, flags: DIFlagPrototyped, isOptimized: false, unit: !12, retainedNodes: !3)
!7 = !DILocation(line: 43, column: 1, scope: !6)
!8 = !DILocation(line: 44, column: 1, scope: !6)
!9 = !DILocation(line: 45, column: 1, scope: !6)
!10 = !DILocation(line: 46, column: 1, scope: !6)
!11 = !DILocation(line: 47, column: 1, scope: !6)
!12 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang",
file: !5,
isOptimized: true, flags: "-O2",
splitDebugFilename: "abc.debug", emissionKind: 2)