1 ; RUN: opt < %s -instcombine -disable-output 2 ; PR1780 3 4 target 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" 5 target 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 14 define i32 @foo() { 15 entry: 16 %x = load i8* bitcast (%opaque_t* @g to i8*) 17 %y = load i32* bitcast (%op_ts* @h to i32*) 18 %z = zext i8 %x to i32 19 %r = add i32 %y, %z 20 ret i32 %r 21 } 22 23