1; RUN: llc < %s -march=x86-64 | FileCheck %s 2 3declare void @bar() 4 5define void @test1(i32* nocapture %X) nounwind minsize { 6entry: 7 %tmp1 = load i32* %X, align 4 8 %and = and i32 %tmp1, 255 9 %cmp = icmp eq i32 %and, 47 10 br i1 %cmp, label %if.then, label %if.end 11 12if.then: 13 tail call void @bar() nounwind 14 br label %if.end 15 16if.end: 17 ret void 18; CHECK-LABEL: test1: 19; CHECK: cmpb $47, (%{{rdi|rcx}}) 20} 21 22define void @test2(i32 %X) nounwind minsize { 23entry: 24 %and = and i32 %X, 255 25 %cmp = icmp eq i32 %and, 47 26 br i1 %cmp, label %if.then, label %if.end 27 28if.then: 29 tail call void @bar() nounwind 30 br label %if.end 31 32if.end: 33 ret void 34; CHECK-LABEL: test2: 35; CHECK: cmpb $47, %{{dil|cl}} 36} 37 38define void @test3(i32 %X) nounwind minsize { 39entry: 40 %and = and i32 %X, 255 41 %cmp = icmp eq i32 %and, 255 42 br i1 %cmp, label %if.then, label %if.end 43 44if.then: 45 tail call void @bar() nounwind 46 br label %if.end 47 48if.end: 49 ret void 50; CHECK-LABEL: test3: 51; CHECK: cmpb $-1, %{{dil|cl}} 52} 53 54; PR16083 55define i1 @test4(i64 %a, i32 %b) { 56entry: 57 %tobool = icmp ne i32 %b, 0 58 br i1 %tobool, label %lor.end, label %lor.rhs 59 60lor.rhs: ; preds = %entry 61 %and = and i64 0, %a 62 %tobool1 = icmp ne i64 %and, 0 63 br label %lor.end 64 65lor.end: ; preds = %lor.rhs, %entry 66 %p = phi i1 [ true, %entry ], [ %tobool1, %lor.rhs ] 67 ret i1 %p 68} 69 70@x = global { i8, i8, i8, i8, i8, i8, i8, i8 } { i8 1, i8 0, i8 0, i8 0, i8 1, i8 0, i8 0, i8 1 }, align 4 71 72; PR16551 73define void @test5(i32 %X) nounwind minsize { 74entry: 75 %bf.load = load i56* bitcast ({ i8, i8, i8, i8, i8, i8, i8, i8 }* @x to i56*), align 4 76 %bf.lshr = lshr i56 %bf.load, 32 77 %bf.cast = trunc i56 %bf.lshr to i32 78 %cmp = icmp ne i32 %bf.cast, 1 79 br i1 %cmp, label %if.then, label %if.end 80 81if.then: 82 tail call void @bar() nounwind 83 br label %if.end 84 85if.end: 86 ret void 87 88; CHECK-LABEL: test5: 89; CHECK-NOT: cmpl $1,{{.*}}x+4 90; CHECK: ret 91} 92