1 ; RUN: llc < %s -mtriple=i386-apple-darwin10 -mcpu=core2 | FileCheck %s 2 ; rdar://7475489 3 4 define i32 @test1(i32 %a, i32 %b) nounwind ssp { 5 entry: 6 ; CHECK: test1: 7 ; CHECK: xorb 8 ; CHECK-NOT: andb 9 ; CHECK-NOT: shrb 10 ; CHECK: testb $64 11 %0 = and i32 %a, 16384 12 %1 = icmp ne i32 %0, 0 13 %2 = and i32 %b, 16384 14 %3 = icmp ne i32 %2, 0 15 %4 = xor i1 %1, %3 16 br i1 %4, label %bb1, label %bb 17 18 bb: ; preds = %entry 19 %5 = tail call i32 (...)* @foo() nounwind ; <i32> [#uses=1] 20 ret i32 %5 21 22 bb1: ; preds = %entry 23 %6 = tail call i32 (...)* @bar() nounwind ; <i32> [#uses=1] 24 ret i32 %6 25 } 26 27 declare i32 @foo(...) 28 29 declare i32 @bar(...) 30 31 32 33 ; PR3351 - (P == 0) & (Q == 0) -> (P|Q) == 0 34 define i32 @test2(i32* %P, i32* %Q) nounwind ssp { 35 entry: 36 %a = icmp eq i32* %P, null ; <i1> [#uses=1] 37 %b = icmp eq i32* %Q, null ; <i1> [#uses=1] 38 %c = and i1 %a, %b 39 br i1 %c, label %bb1, label %return 40 41 bb1: ; preds = %entry 42 ret i32 4 43 44 return: ; preds = %entry 45 ret i32 192 46 ; CHECK: test2: 47 ; CHECK: movl 4(%esp), %eax 48 ; CHECK-NEXT: orl 8(%esp), %eax 49 ; CHECK-NEXT: jne LBB1_2 50 } 51 52 ; PR3351 - (P != 0) | (Q != 0) -> (P|Q) != 0 53 define i32 @test3(i32* %P, i32* %Q) nounwind ssp { 54 entry: 55 %a = icmp ne i32* %P, null ; <i1> [#uses=1] 56 %b = icmp ne i32* %Q, null ; <i1> [#uses=1] 57 %c = or i1 %a, %b 58 br i1 %c, label %bb1, label %return 59 60 bb1: ; preds = %entry 61 ret i32 4 62 63 return: ; preds = %entry 64 ret i32 192 65 ; CHECK: test3: 66 ; CHECK: movl 4(%esp), %eax 67 ; CHECK-NEXT: orl 8(%esp), %eax 68 ; CHECK-NEXT: je LBB2_2 69 } 70 71 ; <rdar://problem/7598384>: 72 ; 73 ; jCC L1 74 ; jmp L2 75 ; L1: 76 ; ... 77 ; L2: 78 ; ... 79 ; 80 ; to: 81 ; 82 ; jnCC L2 83 ; L1: 84 ; ... 85 ; L2: 86 ; ... 87 define float @test4(float %x, float %y) nounwind readnone optsize ssp { 88 entry: 89 %0 = fpext float %x to double ; <double> [#uses=1] 90 %1 = fpext float %y to double ; <double> [#uses=1] 91 %2 = fmul double %0, %1 ; <double> [#uses=3] 92 %3 = fcmp oeq double %2, 0.000000e+00 ; <i1> [#uses=1] 93 br i1 %3, label %bb2, label %bb1 94 95 ; CHECK: jne 96 ; CHECK-NEXT: jnp 97 ; CHECK-NOT: jmp 98 ; CHECK: LBB 99 100 bb1: ; preds = %entry 101 %4 = fadd double %2, -1.000000e+00 ; <double> [#uses=1] 102 br label %bb2 103 104 bb2: ; preds = %entry, %bb1 105 %.0.in = phi double [ %4, %bb1 ], [ %2, %entry ] ; <double> [#uses=1] 106 %.0 = fptrunc double %.0.in to float ; <float> [#uses=1] 107 ret float %.0 108 } 109
