1 ; RUN: llc < %s -march=r600 -mattr=disable-irstructurizer -mcpu=redwood | FileCheck %s 2 3 ; These tests make sure the compiler is optimizing branches using predicates 4 ; when it is legal to do so. 5 6 ; CHECK: @simple_if 7 ; CHECK: PRED_SET{{[EGN][ET]*}}_INT * Pred, 8 ; CHECK: LSHL * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, 1, Pred_sel 9 define void @simple_if(i32 addrspace(1)* %out, i32 %in) { 10 entry: 11 %0 = icmp sgt i32 %in, 0 12 br i1 %0, label %IF, label %ENDIF 13 14 IF: 15 %1 = shl i32 %in, 1 16 br label %ENDIF 17 18 ENDIF: 19 %2 = phi i32 [ %in, %entry ], [ %1, %IF ] 20 store i32 %2, i32 addrspace(1)* %out 21 ret void 22 } 23 24 ; CHECK: @simple_if_else 25 ; CHECK: PRED_SET{{[EGN][ET]*}}_INT * Pred, 26 ; CHECK: LSH{{[LR] \* T[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, 1, Pred_sel 27 ; CHECK: LSH{{[LR] \* T[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, 1, Pred_sel 28 define void @simple_if_else(i32 addrspace(1)* %out, i32 %in) { 29 entry: 30 %0 = icmp sgt i32 %in, 0 31 br i1 %0, label %IF, label %ELSE 32 33 IF: 34 %1 = shl i32 %in, 1 35 br label %ENDIF 36 37 ELSE: 38 %2 = lshr i32 %in, 1 39 br label %ENDIF 40 41 ENDIF: 42 %3 = phi i32 [ %1, %IF ], [ %2, %ELSE ] 43 store i32 %3, i32 addrspace(1)* %out 44 ret void 45 } 46 47 ; CHECK: @nested_if 48 ; CHECK: ALU_PUSH_BEFORE 49 ; CHECK: JUMP 50 ; CHECK: POP 51 ; CHECK: PRED_SET{{[EGN][ET]*}}_INT * Exec 52 ; CHECK: PRED_SET{{[EGN][ET]*}}_INT * Pred, 53 ; CHECK: LSHL * T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, 1, Pred_sel 54 define void @nested_if(i32 addrspace(1)* %out, i32 %in) { 55 entry: 56 %0 = icmp sgt i32 %in, 0 57 br i1 %0, label %IF0, label %ENDIF 58 59 IF0: 60 %1 = add i32 %in, 10 61 %2 = icmp sgt i32 %1, 0 62 br i1 %2, label %IF1, label %ENDIF 63 64 IF1: 65 %3 = shl i32 %1, 1 66 br label %ENDIF 67 68 ENDIF: 69 %4 = phi i32 [%in, %entry], [%1, %IF0], [%3, %IF1] 70 store i32 %4, i32 addrspace(1)* %out 71 ret void 72 } 73 74 ; CHECK: @nested_if_else 75 ; CHECK: ALU_PUSH_BEFORE 76 ; CHECK: JUMP 77 ; CHECK: POP 78 ; CHECK: PRED_SET{{[EGN][ET]*}}_INT * Exec 79 ; CHECK: PRED_SET{{[EGN][ET]*}}_INT * Pred, 80 ; CHECK: LSH{{[LR] \* T[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, 1, Pred_sel 81 ; CHECK: LSH{{[LR] \* T[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, 1, Pred_sel 82 define void @nested_if_else(i32 addrspace(1)* %out, i32 %in) { 83 entry: 84 %0 = icmp sgt i32 %in, 0 85 br i1 %0, label %IF0, label %ENDIF 86 87 IF0: 88 %1 = add i32 %in, 10 89 %2 = icmp sgt i32 %1, 0 90 br i1 %2, label %IF1, label %ELSE1 91 92 IF1: 93 %3 = shl i32 %1, 1 94 br label %ENDIF 95 96 ELSE1: 97 %4 = lshr i32 %in, 1 98 br label %ENDIF 99 100 ENDIF: 101 %5 = phi i32 [%in, %entry], [%3, %IF1], [%4, %ELSE1] 102 store i32 %5, i32 addrspace(1)* %out 103 ret void 104 } 105
