1 ; RUN: opt < %s -loop-reduce -S -mtriple=x86_64-unknown-unknown | grep "phi double" | count 1 2 3 ; Provide legal integer types. 4 target datalayout = "n8:16:32:64" 5 6 7 define void @foobar(i32 %n) nounwind { 8 entry: 9 icmp eq i32 %n, 0 ; <i1>:0 [#uses=2] 10 br i1 %0, label %return, label %bb.nph 11 12 bb.nph: ; preds = %entry 13 %umax = select i1 %0, i32 1, i32 %n ; <i32> [#uses=1] 14 br label %bb 15 16 bb: ; preds = %bb, %bb.nph 17 %i.03 = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i32> [#uses=3] 18 tail call void @bar( i32 %i.03 ) nounwind 19 uitofp i32 %i.03 to double ; <double>:1 [#uses=1] 20 tail call void @foo( double %1 ) nounwind 21 %indvar.next = add i32 %i.03, 1 ; <i32> [#uses=2] 22 %exitcond = icmp eq i32 %indvar.next, %umax ; <i1> [#uses=1] 23 br i1 %exitcond, label %return, label %bb 24 25 return: ; preds = %bb, %entry 26 ret void 27 } 28 29 ; Unable to eliminate cast because the mantissa bits for double are not enough 30 ; to hold all of i64 IV bits. 31 define void @foobar2(i64 %n) nounwind { 32 entry: 33 icmp eq i64 %n, 0 ; <i1>:0 [#uses=2] 34 br i1 %0, label %return, label %bb.nph 35 36 bb.nph: ; preds = %entry 37 %umax = select i1 %0, i64 1, i64 %n ; <i64> [#uses=1] 38 br label %bb 39 40 bb: ; preds = %bb, %bb.nph 41 %i.03 = phi i64 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i64> [#uses=3] 42 trunc i64 %i.03 to i32 ; <i32>:1 [#uses=1] 43 tail call void @bar( i32 %1 ) nounwind 44 uitofp i64 %i.03 to double ; <double>:2 [#uses=1] 45 tail call void @foo( double %2 ) nounwind 46 %indvar.next = add i64 %i.03, 1 ; <i64> [#uses=2] 47 %exitcond = icmp eq i64 %indvar.next, %umax ; <i1> [#uses=1] 48 br i1 %exitcond, label %return, label %bb 49 50 return: ; preds = %bb, %entry 51 ret void 52 } 53 54 ; Unable to eliminate cast due to potentional overflow. 55 define void @foobar3() nounwind { 56 entry: 57 tail call i32 (...) @nn( ) nounwind ; <i32>:0 [#uses=1] 58 icmp eq i32 %0, 0 ; <i1>:1 [#uses=1] 59 br i1 %1, label %return, label %bb 60 61 bb: ; preds = %bb, %entry 62 %i.03 = phi i32 [ 0, %entry ], [ %3, %bb ] ; <i32> [#uses=3] 63 tail call void @bar( i32 %i.03 ) nounwind 64 uitofp i32 %i.03 to double ; <double>:2 [#uses=1] 65 tail call void @foo( double %2 ) nounwind 66 add i32 %i.03, 1 ; <i32>:3 [#uses=2] 67 tail call i32 (...) @nn( ) nounwind ; <i32>:4 [#uses=1] 68 icmp ugt i32 %4, %3 ; <i1>:5 [#uses=1] 69 br i1 %5, label %bb, label %return 70 71 return: ; preds = %bb, %entry 72 ret void 73 } 74 75 ; Unable to eliminate cast due to overflow. 76 define void @foobar4() nounwind { 77 entry: 78 br label %bb.nph 79 80 bb.nph: ; preds = %entry 81 br label %bb 82 83 bb: ; preds = %bb, %bb.nph 84 %i.03 = phi i8 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i32> [#uses=3] 85 %tmp2 = sext i8 %i.03 to i32 ; <i32>:0 [#uses=1] 86 tail call void @bar( i32 %tmp2 ) nounwind 87 %tmp3 = uitofp i8 %i.03 to double ; <double>:1 [#uses=1] 88 tail call void @foo( double %tmp3 ) nounwind 89 %indvar.next = add i8 %i.03, 1 ; <i32> [#uses=2] 90 %tmp = sext i8 %indvar.next to i32 91 %exitcond = icmp eq i32 %tmp, 32767 ; <i1> [#uses=1] 92 br i1 %exitcond, label %return, label %bb 93 94 return: ; preds = %bb, %entry 95 ret void 96 } 97 98 declare void @bar(i32) 99 100 declare void @foo(double) 101 102 declare i32 @nn(...) 103 104
