| ; RUN: opt < %s -instcombine -S | FileCheck %s |
| |
| ; Don't assume that external global variables or those with weak linkage have |
| ; their preferred alignment. They may only have the ABI minimum alignment. |
| |
| ; CHECK: %s = shl i64 %a, 3 |
| ; CHECK: %r = or i64 %s, ptrtoint (i32* @A to i64) |
| ; CHECK: %q = add i64 %r, 1 |
| ; CHECK: ret i64 %q |
| |
| target datalayout = "i32:8:32" |
| |
| @A = external global i32 |
| @B = weak_odr global i32 0 |
| |
| define i64 @foo(i64 %a) { |
| %t = ptrtoint i32* @A to i64 |
| %s = shl i64 %a, 3 |
| %r = or i64 %t, %s |
| %q = add i64 %r, 1 |
| ret i64 %q |
| } |
| |
| define i32 @bar() { |
| ; CHECK: @bar |
| %r = load i32* @B, align 1 |
| ; CHECK: align 1 |
| ret i32 %r |
| } |
