| ; RUN: opt -S -instcombine < %s | FileCheck %s |
| |
| ; When merging zero sized alloca check that requested alignments of the allocas |
| ; are obeyed. |
| |
| @x = global i8* null, align 8 |
| @y = global i8* null, align 8 |
| |
| target 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-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.8.0" |
| |
| ; CHECK: @f |
| ; CHECK-NEXT: alloca [0 x i8], align 1024 |
| ; CHECK-NOT: alloca |
| ; CHECK: ret void |
| define void @f() { |
| %1 = alloca [0 x i8], align 1 |
| %2 = alloca [0 x i8], align 1024 |
| %3 = getelementptr inbounds [0 x i8]* %1, i64 0, i64 0 |
| %4 = getelementptr inbounds [0 x i8]* %2, i64 0, i64 0 |
| store i8* %3, i8** @x, align 8 |
| store i8* %4, i8** @y, align 8 |
| ret void |
| } |
