1 ; RUN: llc < %s -mtriple=i386-apple-darwin10 -mcpu=penryn | FileCheck %s 2 3 ; rdar://7475489 4 5 define i32 @test1(i32 %a, i32 %b) nounwind ssp { 6 entry: 7 ; CHECK: test1: 8 ; CHECK: xorb 9 ; CHECK-NOT: andb 10 ; CHECK-NOT: shrb 11 ; CHECK: testb $64 12 %0 = and i32 %a, 16384 13 %1 = icmp ne i32 %0, 0 14 %2 = and i32 %b, 16384 15 %3 = icmp ne i32 %2, 0 16 %4 = xor i1 %1, %3 17 br i1 %4, label %bb1, label %bb 18 19 bb: ; preds = %entry 20 %5 = tail call i32 (...)* @foo() nounwind ; <i32> [#uses=1] 21 ret i32 %5 22 23 bb1: ; preds = %entry 24 %6 = tail call i32 (...)* @bar() nounwind ; <i32> [#uses=1] 25 ret i32 %6 26 } 27 28 declare i32 @foo(...) 29 30 declare i32 @bar(...) 31 32 33 34 ; PR3351 - (P == 0) & (Q == 0) -> (P|Q) == 0 35 define i32 @test2(i32* %P, i32* %Q) nounwind ssp { 36 entry: 37 %a = icmp eq i32* %P, null ; <i1> [#uses=1] 38 %b = icmp eq i32* %Q, null ; <i1> [#uses=1] 39 %c = and i1 %a, %b 40 br i1 %c, label %bb1, label %return 41 42 bb1: ; preds = %entry 43 ret i32 4 44 45 return: ; preds = %entry 46 ret i32 192 47 ; CHECK: test2: 48 ; CHECK: movl 4(%esp), %eax 49 ; CHECK-NEXT: orl 8(%esp), %eax 50 ; CHECK-NEXT: jne LBB1_2 51 } 52 53 ; PR3351 - (P != 0) | (Q != 0) -> (P|Q) != 0 54 define i32 @test3(i32* %P, i32* %Q) nounwind ssp { 55 entry: 56 %a = icmp ne i32* %P, null ; <i1> [#uses=1] 57 %b = icmp ne i32* %Q, null ; <i1> [#uses=1] 58 %c = or i1 %a, %b 59 br i1 %c, label %bb1, label %return 60 61 bb1: ; preds = %entry 62 ret i32 4 63 64 return: ; preds = %entry 65 ret i32 192 66 ; CHECK: test3: 67 ; CHECK: movl 4(%esp), %eax 68 ; CHECK-NEXT: orl 8(%esp), %eax 69 ; CHECK-NEXT: je LBB2_2 70 } 71 72 ; <rdar://problem/7598384>: 73 ; 74 ; jCC L1 75 ; jmp L2 76 ; L1: 77 ; ... 78 ; L2: 79 ; ... 80 ; 81 ; to: 82 ; 83 ; jnCC L2 84 ; L1: 85 ; ... 86 ; L2: 87 ; ... 88 define float @test4(float %x, float %y) nounwind readnone optsize ssp { 89 entry: 90 %0 = fpext float %x to double ; <double> [#uses=1] 91 %1 = fpext float %y to double ; <double> [#uses=1] 92 %2 = fmul double %0, %1 ; <double> [#uses=3] 93 %3 = fcmp oeq double %2, 0.000000e+00 ; <i1> [#uses=1] 94 br i1 %3, label %bb2, label %bb1 95 96 ; CHECK: jne 97 ; CHECK-NEXT: jnp 98 ; CHECK-NOT: jmp 99 ; CHECK: LBB 100 101 bb1: ; preds = %entry 102 %4 = fadd double %2, -1.000000e+00 ; <double> [#uses=1] 103 br label %bb2 104 105 bb2: ; preds = %entry, %bb1 106 %.0.in = phi double [ %4, %bb1 ], [ %2, %entry ] ; <double> [#uses=1] 107 %.0 = fptrunc double %.0.in to float ; <float> [#uses=1] 108 ret float %.0 109 } 110 111
