1 ; RUN: llc < %s -mtriple=thumbv7-apple-darwin -O3 -relocation-model=pic -arm-atomic-cfg-tidy=0 | FileCheck %s 2 ; rdar://8115404 3 ; Tail merging must not split an IT block. 4 5 %struct.FILE = type { i8*, i32, i32, i16, i16, %struct.__sbuf, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.__sbuf, %struct.__sFILEX*, i32, [3 x i8], [1 x i8], %struct.__sbuf, i32, i64 } 6 %struct._RuneCharClass = type { [14 x i8], i32 } 7 %struct._RuneEntry = type { i32, i32, i32, i32* } 8 %struct._RuneLocale = type { [8 x i8], [32 x i8], i32 (i8*, i32, i8**)*, i32 (i32, i8*, i32, i8**)*, i32, [256 x i32], [256 x i32], [256 x i32], %struct._RuneRange, %struct._RuneRange, %struct._RuneRange, i8*, i32, i32, %struct._RuneCharClass* } 9 %struct._RuneRange = type { i32, %struct._RuneEntry* } 10 %struct.__sFILEX = type opaque 11 %struct.__sbuf = type { i8*, i32 } 12 13 @finput = external global %struct.FILE* ; <%struct.FILE**> [#uses=1] 14 @_DefaultRuneLocale = external global %struct._RuneLocale ; <%struct._RuneLocale*> [#uses=0] 15 @token_buffer = external global [1025 x i8], align 4 ; <[1025 x i8]*> [#uses=1] 16 @.str73 = external constant [6 x i8], align 4 ; <[6 x i8]*> [#uses=0] 17 @.str174 = external constant [5 x i8], align 4 ; <[5 x i8]*> [#uses=0] 18 @.str275 = external constant [6 x i8], align 4 ; <[6 x i8]*> [#uses=0] 19 @.str376 = external constant [5 x i8], align 4 ; <[5 x i8]*> [#uses=0] 20 @.str477 = external constant [6 x i8], align 4 ; <[6 x i8]*> [#uses=0] 21 @.str578 = external constant [6 x i8], align 4 ; <[6 x i8]*> [#uses=0] 22 @.str679 = external constant [7 x i8], align 4 ; <[7 x i8]*> [#uses=0] 23 @.str780 = external constant [6 x i8], align 4 ; <[6 x i8]*> [#uses=0] 24 @.str881 = external constant [5 x i8], align 4 ; <[5 x i8]*> [#uses=0] 25 @.str982 = external constant [6 x i8], align 4 ; <[6 x i8]*> [#uses=0] 26 @.str1083 = external constant [9 x i8], align 4 ; <[9 x i8]*> [#uses=0] 27 @.str1184 = external constant [7 x i8], align 4 ; <[7 x i8]*> [#uses=0] 28 @.str1285 = external constant [16 x i8], align 4 ; <[16 x i8]*> [#uses=0] 29 @.str1386 = external constant [12 x i8], align 4 ; <[12 x i8]*> [#uses=0] 30 @.str1487 = external constant [5 x i8], align 4 ; <[5 x i8]*> [#uses=0] 31 @llvm.used = external global [1 x i8*] ; <[1 x i8*]*> [#uses=0] 32 33 define fastcc i32 @parse_percent_token() nounwind { 34 entry: 35 ; CHECK: pop 36 ; CHECK: pop 37 ; CHECK: pop 38 ; CHECK: pop 39 ; CHECK: pop 40 ; CHECK: pop 41 ; CHECK: pop 42 ; Do not convert into single stream code. BranchProbability Analysis assumes 43 ; that branches which goes to "ret" instruction have lower probabilities. 44 switch i32 undef, label %bb7 [ 45 i32 37, label %bb43 46 i32 48, label %bb5 47 i32 50, label %bb4 48 i32 60, label %bb2 49 i32 61, label %bb6 50 i32 62, label %bb3 51 i32 123, label %bb1 52 ] 53 54 bb1: ; preds = %entry 55 ret i32 8 56 57 bb2: ; preds = %entry 58 ret i32 15 59 60 bb3: ; preds = %entry 61 ret i32 16 62 63 bb4: ; preds = %entry 64 ret i32 17 65 66 bb5: ; preds = %entry 67 ret i32 9 68 69 bb6: ; preds = %entry 70 ret i32 18 71 72 bb7: ; preds = %entry 73 br i1 undef, label %bb.i.i, label %bb1.i.i 74 75 bb.i.i: ; preds = %bb7 76 br i1 undef, label %bb43, label %bb12 77 78 bb1.i.i: ; preds = %bb7 79 unreachable 80 81 bb9: ; preds = %bb.i.i2 82 br i1 undef, label %bb10, label %bb11 83 84 bb10: ; preds = %bb9 85 br label %bb11 86 87 bb11: ; preds = %bb10, %bb9 88 %p.0 = phi i8* [ undef, %bb10 ], [ %p.1, %bb9 ] ; <i8*> [#uses=1] 89 %0 = load %struct.FILE*, %struct.FILE** @finput, align 4 ; <%struct.FILE*> [#uses=1] 90 %1 = tail call i32 @getc(%struct.FILE* %0) nounwind ; <i32> [#uses=0] 91 br label %bb12 92 93 bb12: ; preds = %bb11, %bb.i.i 94 %p.1 = phi i8* [ %p.0, %bb11 ], [ getelementptr inbounds ([1025 x i8], [1025 x i8]* @token_buffer, i32 0, i32 0), %bb.i.i ] ; <i8*> [#uses=2] 95 %2 = icmp ult i32 undef, 128 ; <i1> [#uses=1] 96 br i1 %2, label %bb.i.i2, label %bb1.i.i3 97 98 bb.i.i2: ; preds = %bb12 99 %3 = load i32, i32* null, align 4 ; <i32> [#uses=1] 100 %4 = lshr i32 %3, 8 ; <i32> [#uses=1] 101 %.lobit.i1 = and i32 %4, 1 ; <i32> [#uses=1] 102 %.not = icmp ne i32 %.lobit.i1, 0 ; <i1> [#uses=1] 103 %or.cond = or i1 %.not, undef ; <i1> [#uses=1] 104 br i1 %or.cond, label %bb9, label %bb14 105 106 bb1.i.i3: ; preds = %bb12 107 unreachable 108 109 bb14: ; preds = %bb.i.i2 110 store i8 0, i8* %p.1, align 1 111 br i1 undef, label %bb43, label %bb15 112 113 bb15: ; preds = %bb14 114 unreachable 115 116 bb43: ; preds = %bb14, %bb.i.i, %entry 117 %.0 = phi i32 [ 7, %entry ], [ 24, %bb.i.i ], [ 9, %bb14 ] ; <i32> [#uses=1] 118 ret i32 %.0 119 } 120 121 declare i32 @getc(%struct.FILE* nocapture) nounwind 122 123 declare i32 @strcmp(i8* nocapture, i8* nocapture) nounwind readonly 124 125 declare i32 @__maskrune(i32, i32) 126 127 declare i32 @ungetc(i32, %struct.FILE* nocapture) nounwind 128
