1; RUN: opt < %s -passes=instcombine -disable-output 2; PR1780 3 4target 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-f80:32:32" 5target triple = "i686-pc-linux-gnu" 6 7%opaque_t = type opaque 8%opaque2 = type opaque 9%op_ts = type {%opaque2, i32} 10 11@g = external global %opaque_t 12@h = external global %op_ts 13 14define i32 @foo() { 15entry: 16 %x = load i8, ptr @g 17 %y = load i32, ptr @h 18 %z = zext i8 %x to i32 19 %r = add i32 %y, %z 20 ret i32 %r 21} 22 23