1; RUN: opt < %s -passes=dse -S 2 3target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" 4target triple = "i386-apple-darwin10.0" 5 6@g80 = external global i8 ; <ptr> [#uses=3] 7 8declare signext i8 @foo(i8 signext, i8 signext) nounwind readnone ssp 9 10declare i32 @func68(i32) nounwind readonly ssp 11 12; PR4815 13define void @test1(i32 %int32p54) noreturn nounwind ssp { 14entry: 15 br label %bb 16 17bb: ; preds = %bb, %entry 18 %storemerge = phi i8 [ %2, %bb ], [ 1, %entry ] ; <i8> [#uses=1] 19 store i8 %storemerge, ptr @g80 20 %0 = tail call i32 @func68(i32 1) nounwind ssp ; <i32> [#uses=1] 21 %1 = trunc i32 %0 to i8 ; <i8> [#uses=1] 22 store i8 %1, ptr @g80, align 1 23 store i8 undef, ptr @g80, align 1 24 %2 = tail call signext i8 @foo(i8 signext undef, i8 signext 1) nounwind ; <i8> [#uses=1] 25 br label %bb 26} 27 28define fastcc i32 @test2() nounwind ssp { 29bb14: ; preds = %bb4 30 %0 = getelementptr inbounds ptr, ptr undef, i64 undef ; <ptr> [#uses=1] 31 %1 = getelementptr inbounds i16, ptr %0, i64 undef ; <ptr> [#uses=1] 32 %2 = getelementptr inbounds i8, ptr %1, i64 undef ; <ptr> [#uses=1] 33 %3 = getelementptr inbounds i16, ptr %0, i64 undef ; <ptr> [#uses=1] 34 store i16 undef, ptr %3, align 2 35 %4 = getelementptr inbounds i8, ptr %2, i64 undef ; <ptr> [#uses=1] 36 call void @llvm.memcpy.p0.p0.i64(ptr %4, ptr undef, i64 undef, i1 false) 37 unreachable 38} 39 40declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind 41 42 43; rdar://7635088 44define i32 @test3() { 45entry: 46 ret i32 0 47 48dead: 49 %P2 = getelementptr i32, ptr %P2, i32 52 50 %Q2 = getelementptr i32, ptr %Q2, i32 52 51 store i32 4, ptr %P2 52 store i32 4, ptr %Q2 53 br label %dead 54} 55 56 57; PR3141 58%struct.ada__tags__dispatch_table = type { [1 x i32] } 59%struct.f393a00_1__object = type { ptr, i8 } 60%struct.f393a00_2__windmill = type { %struct.f393a00_1__object, i16 } 61 62define void @test4(ptr %a, ptr %b) { 63entry: 64 %t = alloca %struct.f393a00_2__windmill ; <ptr> [#uses=1] 65 %0 = getelementptr %struct.f393a00_2__windmill, ptr %t, i32 0, i32 0, i32 0 ; <ptr> [#uses=1] 66 %1 = load ptr, ptr null, align 4 ; <ptr> [#uses=1] 67 %2 = load ptr, ptr %0, align 8 ; <ptr> [#uses=1] 68 store ptr %2, ptr null, align 4 69 store ptr %1, ptr null, align 4 70 ret void 71} 72