1 ; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s 2 3 define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) nounwind { 4 ; CHECK: t1: 5 ; CHECK: ittt ne 6 ; CHECK: cmpne 7 ; CHECK: addne 8 ; CHECK: bxne lr 9 switch i32 %c, label %cond_next [ 10 i32 1, label %cond_true 11 i32 7, label %cond_true 12 ] 13 14 cond_true: 15 %tmp12 = add i32 %a, 1 16 %tmp1518 = add i32 %tmp12, %b 17 ret i32 %tmp1518 18 19 cond_next: 20 %tmp15 = add i32 %b, %a 21 ret i32 %tmp15 22 } 23 24 define i32 @t2(i32 %a, i32 %b) nounwind { 25 entry: 26 ; Do not if-convert when branches go to the different loops. 27 ; CHECK: t2: 28 ; CHECK-NOT: ite gt 29 ; CHECK-NOT: subgt 30 ; CHECK-NOT: suble 31 %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1] 32 br i1 %tmp1434, label %bb17, label %bb.outer 33 34 bb.outer: ; preds = %cond_false, %entry 35 %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5] 36 %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 37 br label %bb 38 39 bb: ; preds = %cond_true, %bb.outer 40 %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2] 41 %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1] 42 %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1] 43 %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6] 44 %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1] 45 br i1 %tmp3, label %cond_true, label %cond_false 46 47 cond_true: ; preds = %bb 48 %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2] 49 %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1] 50 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 51 br i1 %tmp1437, label %bb17, label %bb 52 53 cond_false: ; preds = %bb 54 %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2] 55 %tmp14 = icmp eq i32 %a_addr.026.0, %tmp10 ; <i1> [#uses=1] 56 br i1 %tmp14, label %bb17, label %bb.outer 57 58 bb17: ; preds = %cond_false, %cond_true, %entry 59 %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 60 ret i32 %a_addr.026.1 61 } 62 63 @x = external global i32* ; <i32**> [#uses=1] 64 65 define void @foo(i32 %a) nounwind { 66 entry: 67 %tmp = load i32** @x ; <i32*> [#uses=1] 68 store i32 %a, i32* %tmp 69 ret void 70 } 71 72 define void @t3(i32 %a, i32 %b) nounwind { 73 entry: 74 ; CHECK: t3: 75 ; CHECK: itt ge 76 ; CHECK: movge r0, r1 77 ; CHECK: blge _foo 78 %tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1] 79 br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock 80 81 cond_true: ; preds = %entry 82 call void @foo( i32 %b ) 83 ret void 84 85 UnifiedReturnBlock: ; preds = %entry 86 ret void 87 } 88
