1 ; RUN: opt -S -simplifycfg < %s | FileCheck %s 2 3 define i32 @speculate_vector_extract(i32 %d, <4 x i32> %v) #0 { 4 ; CHECK-LABEL: @speculate_vector_extract( 5 ; CHECK-NOT: br 6 entry: 7 %conv = insertelement <4 x i32> undef, i32 %d, i32 0 8 %conv2 = insertelement <4 x i32> %conv, i32 %d, i32 1 9 %conv3 = insertelement <4 x i32> %conv2, i32 %d, i32 2 10 %conv4 = insertelement <4 x i32> %conv3, i32 %d, i32 3 11 %tmp6 = add nsw <4 x i32> %conv4, <i32 0, i32 -1, i32 -2, i32 -3> 12 %cmp = icmp eq <4 x i32> %tmp6, zeroinitializer 13 %cmp.ext = sext <4 x i1> %cmp to <4 x i32> 14 %tmp8 = extractelement <4 x i32> %cmp.ext, i32 0 15 %tobool = icmp eq i32 %tmp8, 0 16 br i1 %tobool, label %cond.else, label %cond.then 17 18 return: ; preds = %cond.end28 19 ret i32 %cond32 20 21 cond.then: ; preds = %entry 22 %tmp10 = extractelement <4 x i32> %v, i32 0 23 br label %cond.end 24 25 cond.else: ; preds = %entry 26 %tmp12 = extractelement <4 x i32> %v, i32 3 27 br label %cond.end 28 29 cond.end: ; preds = %cond.else, %cond.then 30 %cond = phi i32 [ %tmp10, %cond.then ], [ %tmp12, %cond.else ] 31 %tmp14 = extractelement <4 x i32> %cmp.ext, i32 1 32 %tobool15 = icmp eq i32 %tmp14, 0 33 br i1 %tobool15, label %cond.else17, label %cond.then16 34 35 cond.then16: ; preds = %cond.end 36 %tmp20 = extractelement <4 x i32> %v, i32 1 37 br label %cond.end18 38 39 cond.else17: ; preds = %cond.end 40 br label %cond.end18 41 42 cond.end18: ; preds = %cond.else17, %cond.then16 43 %cond22 = phi i32 [ %tmp20, %cond.then16 ], [ %cond, %cond.else17 ] 44 %tmp24 = extractelement <4 x i32> %cmp.ext, i32 2 45 %tobool25 = icmp eq i32 %tmp24, 0 46 br i1 %tobool25, label %cond.else27, label %cond.then26 47 48 cond.then26: ; preds = %cond.end18 49 %tmp30 = extractelement <4 x i32> %v, i32 2 50 br label %cond.end28 51 52 cond.else27: ; preds = %cond.end18 53 br label %cond.end28 54 55 cond.end28: ; preds = %cond.else27, %cond.then26 56 %cond32 = phi i32 [ %tmp30, %cond.then26 ], [ %cond22, %cond.else27 ] 57 br label %return 58 } 59 60 attributes #0 = { nounwind } 61
