| ; RUN: opt < %s -passes=instcombine -disable-output | |
| ; PR1780 | |
| 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" | |
| target triple = "i686-pc-linux-gnu" | |
| %opaque_t = type opaque | |
| %opaque2 = type opaque | |
| %op_ts = type {%opaque2, i32} | |
| @g = external global %opaque_t | |
| @h = external global %op_ts | |
| define i32 @foo() { | |
| entry: | |
| %x = load i8, ptr @g | |
| %y = load i32, ptr @h | |
| %z = zext i8 %x to i32 | |
| %r = add i32 %y, %z | |
| ret i32 %r | |
| } | |