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1; RUN: opt < %s -aa-pipeline=basic-aa -passes=gvn -disable-output2; PR17823 4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"5target triple = "x86_64-unknown-linux-gnu"6 %struct.device = type { [20 x i8] }7 %struct.pci_device_id = type { i32, i32, i32, i32, i32, i32, i64 }8 %struct.usb_bus = type { ptr }9 %struct.usb_hcd = type { %struct.usb_bus, [0 x i64] }10@pci_ids = constant [1 x %struct.pci_device_id] zeroinitializer11 12@__mod_pci_device_table = alias [1 x %struct.pci_device_id], ptr @pci_ids ; <ptr> [#uses=0]13 14define i32 @ehci_pci_setup(ptr %hcd) {15entry:16 %tmp14 = getelementptr %struct.usb_hcd, ptr %hcd, i32 0, i32 0, i32 0 ; <ptr> [#uses=1]17 %tmp15 = load ptr, ptr %tmp14, align 8 ; <ptr> [#uses=0]18 br i1 false, label %bb25, label %return19 20bb25: ; preds = %entry21 br i1 false, label %cond_true, label %return22 23cond_true: ; preds = %bb2524 %tmp601 = getelementptr %struct.usb_hcd, ptr %hcd, i32 0, i32 1, i64 2305843009213693951 ; <ptr> [#uses=1]25 %tmp68 = load ptr, ptr %tmp601, align 8 ; <ptr> [#uses=0]26 ret i32 undef27 28return: ; preds = %bb25, %entry29 ret i32 undef30}31