2012-09-18 09:31:44 +00:00
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; RUN: opt -S -instcombine < %s | FileCheck %s
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; When merging zero sized alloca check that requested alignments of the allocas
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; are obeyed.
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@x = global i8* null, align 8
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@y = global i8* null, align 8
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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"
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target triple = "x86_64-apple-macosx10.8.0"
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2013-07-14 01:42:54 +00:00
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; CHECK-LABEL: @f(
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2012-09-18 09:31:44 +00:00
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; CHECK-NEXT: alloca [0 x i8], align 1024
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; CHECK-NOT: alloca
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; CHECK: ret void
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define void @f() {
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%1 = alloca [0 x i8], align 1
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%2 = alloca [0 x i8], align 1024
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%3 = getelementptr inbounds [0 x i8]* %1, i64 0, i64 0
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%4 = getelementptr inbounds [0 x i8]* %2, i64 0, i64 0
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store i8* %3, i8** @x, align 8
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store i8* %4, i8** @y, align 8
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ret void
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}
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