1 ; RUN: llc -march=hexagon < %s | FileCheck %s 2 ; REQUIRES: asserts 3 4 ; When tail-duplicating a block with PHI nodes that use subregisters, the 5 ; subregisters were dropped by the tail duplicator, resulting in invalid 6 ; COPY instructions being generated. 7 8 ; CHECK: = asl(r{{[0-9]+}}:{{[0-9]+}},#15) 9 10 target triple = "hexagon" 11 12 %struct.0 = type { i64, i16 } 13 %struct.1 = type { i64, i64 } 14 15 declare hidden fastcc void @foo(%struct.0* noalias nocapture, i8 signext, i8 zeroext, i32, i64, i64) unnamed_addr #0 16 17 define void @fred(%struct.0* noalias nocapture sret %agg.result, %struct.1* byval nocapture readonly align 8 %a) #1 { 18 entry: 19 %0 = load i64, i64* undef, align 8 20 switch i32 undef, label %if.else [ 21 i32 32767, label %if.then 22 i32 0, label %if.then7 23 ] 24 25 if.then: ; preds = %entry 26 ret void 27 28 if.then7: ; preds = %entry 29 br i1 undef, label %if.then.i, label %if.else16.i 30 31 if.then.i: ; preds = %if.then7 32 br i1 undef, label %if.then5.i, label %if.else.i 33 34 if.then5.i: ; preds = %if.then.i 35 %shl.i21 = shl i64 %0, 0 36 br label %if.end.i 37 38 if.else.i: ; preds = %if.then.i 39 %shl12.i = shl i64 %0, 7 40 br label %if.end.i 41 42 if.end.i: ; preds = %if.else.i, %if.then5.i 43 %aSig0.0 = phi i64 [ undef, %if.then5.i ], [ %shl12.i, %if.else.i ] 44 %storemerge43.i = phi i64 [ %shl.i21, %if.then5.i ], [ 0, %if.else.i ] 45 %sub15.i = sub nsw i32 -63, 8 46 br label %if.end13 47 48 if.else16.i: ; preds = %if.then7 49 br label %if.end13 50 51 if.else: ; preds = %entry 52 %or12 = or i64 9, 281474976710656 53 br label %if.end13 54 55 if.end13: ; preds = %if.else, %if.else16.i, %if.end.i 56 %aSig1.1 = phi i64 [ %0, %if.else ], [ %storemerge43.i, %if.end.i ], [ undef, %if.else16.i ] 57 %aSig0.2 = phi i64 [ %or12, %if.else ], [ %aSig0.0, %if.end.i ], [ undef, %if.else16.i ] 58 %aExp.0 = phi i32 [ undef, %if.else ], [ %sub15.i, %if.end.i ], [ undef, %if.else16.i ] 59 %shl2.i = shl i64 %aSig0.2, 15 60 %shr.i = lshr i64 %aSig1.1, 49 61 %or.i = or i64 %shl2.i, %shr.i 62 tail call fastcc void @foo(%struct.0* noalias %agg.result, i8 signext 80, i8 zeroext undef, i32 %aExp.0, i64 %or.i, i64 undef) 63 unreachable 64 } 65 66 attributes #0 = { norecurse nounwind } 67 attributes #1 = { nounwind } 68
