1 ; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s 2 ; RUN: llc < %s -mtriple=thumbv7-apple-darwin -arm-default-it | FileCheck %s 3 ; RUN: llc < %s -mtriple=thumbv8 -arm-no-restrict-it |FileCheck %s 4 define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) nounwind { 5 ; CHECK-LABEL: t1: 6 ; CHECK: ittt ne 7 ; CHECK: cmpne 8 ; CHECK: addne 9 ; CHECK: bxne lr 10 switch i32 %c, label %cond_next [ 11 i32 1, label %cond_true 12 i32 7, label %cond_true 13 ] 14 15 cond_true: 16 %tmp12 = add i32 %a, 1 17 %tmp1518 = add i32 %tmp12, %b 18 ret i32 %tmp1518 19 20 cond_next: 21 %tmp15 = add i32 %b, %a 22 ret i32 %tmp15 23 } 24 25 define i32 @t2(i32 %a, i32 %b) nounwind { 26 entry: 27 ; Do not if-convert when branches go to the different loops. 28 ; CHECK-LABEL: t2: 29 ; CHECK-NOT: ite gt 30 ; CHECK-NOT: subgt 31 ; CHECK-NOT: suble 32 %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1] 33 br i1 %tmp1434, label %bb17, label %bb.outer 34 35 bb.outer: ; preds = %cond_false, %entry 36 %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5] 37 %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 38 br label %bb 39 40 bb: ; preds = %cond_true, %bb.outer 41 %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2] 42 %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1] 43 %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1] 44 %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6] 45 %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1] 46 br i1 %tmp3, label %cond_true, label %cond_false 47 48 cond_true: ; preds = %bb 49 %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2] 50 %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1] 51 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 52 br i1 %tmp1437, label %bb17, label %bb 53 54 cond_false: ; preds = %bb 55 %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2] 56 %tmp14 = icmp eq i32 %a_addr.026.0, %tmp10 ; <i1> [#uses=1] 57 br i1 %tmp14, label %bb17, label %bb.outer 58 59 bb17: ; preds = %cond_false, %cond_true, %entry 60 %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 61 ret i32 %a_addr.026.1 62 } 63 64 @x = external global i32* ; <i32**> [#uses=1] 65 66 define void @foo(i32 %a) nounwind { 67 entry: 68 %tmp = load i32*, i32** @x ; <i32*> [#uses=1] 69 store i32 %a, i32* %tmp 70 ret void 71 } 72 73 define void @t3(i32 %a, i32 %b) nounwind { 74 entry: 75 ; CHECK-LABEL: t3: 76 ; CHECK: itt ge 77 ; CHECK: movge r0, r1 78 ; CHECK: blge {{_?}}foo 79 %tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1] 80 br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock 81 82 cond_true: ; preds = %entry 83 call void @foo( i32 %b ) 84 ret void 85 86 UnifiedReturnBlock: ; preds = %entry 87 ret void 88 } 89
