1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s 3 4target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" 5target triple = "armv7a--none-eabi" 6 7; One of the phi node's values is too complex to be represented by a global 8; variable, so we can't convert to a lookup table. 9 10 11@g1 = external global i32, align 4 12@g2 = external global i32, align 4 13@g3 = external global i32, align 4 14@g4 = external thread_local global i32, align 4 15 16define ptr @test3(i32 %n) { 17; CHECK-LABEL: @test3( 18; CHECK-NEXT: entry: 19; CHECK-NEXT: switch i32 [[N:%.*]], label [[SW_DEFAULT:%.*]] [ 20; CHECK-NEXT: i32 0, label [[RETURN:%.*]] 21; CHECK-NEXT: i32 1, label [[SW_BB1:%.*]] 22; CHECK-NEXT: i32 2, label [[SW_BB2:%.*]] 23; CHECK-NEXT: ] 24; CHECK: sw.bb1: 25; CHECK-NEXT: br label [[RETURN]] 26; CHECK: sw.bb2: 27; CHECK-NEXT: br label [[RETURN]] 28; CHECK: sw.default: 29; CHECK-NEXT: br label [[RETURN]] 30; CHECK: return: 31; CHECK-NEXT: [[RETVAL_0:%.*]] = phi ptr [ @g4, [[SW_DEFAULT]] ], [ getelementptr inbounds (i32, ptr inttoptr (i32 mul (i32 ptrtoint (ptr @g3 to i32), i32 2) to ptr), i32 1), [[SW_BB2]] ], [ @g2, [[SW_BB1]] ], [ @g1, [[ENTRY:%.*]] ] 32; CHECK-NEXT: ret ptr [[RETVAL_0]] 33; 34entry: 35 switch i32 %n, label %sw.default [ 36 i32 0, label %sw.bb 37 i32 1, label %sw.bb1 38 i32 2, label %sw.bb2 39 ] 40 41sw.bb: 42 br label %return 43 44sw.bb1: 45 br label %return 46 47sw.bb2: 48 br label %return 49 50sw.default: 51 br label %return 52 53return: 54 %retval.0 = phi ptr [ @g4, %sw.default ], [ getelementptr inbounds (i32, ptr inttoptr (i32 mul (i32 ptrtoint (ptr @g3 to i32), i32 2) to ptr), i32 1), %sw.bb2 ], [ @g2, %sw.bb1 ], [ @g1, %sw.bb ] 55 ret ptr %retval.0 56} 57