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For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
22 lines
1.0 KiB
LLVM
22 lines
1.0 KiB
LLVM
; RUN: llc --code-model=kernel -march=x86-64 <%s -asm-verbose=0 | FileCheck %s
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; PR4933
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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"
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target triple = "x86_64-unknown-linux-gnu"
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%struct.kmem_cache_order_objects = type { i64 }
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declare i8* @memset(i8*, i32, i64)
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define void @unxlate_dev_mem_ptr(i64 %phis, i8* %addr) nounwind {
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%pte.addr.i = alloca %struct.kmem_cache_order_objects*
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%call8 = call i8* @memset(i8* bitcast ([512 x %struct.kmem_cache_order_objects]* @bm_pte to i8*), i32 0, i64 4096)
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; CHECK: movq $bm_pte, %rdi
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; CHECK-NEXT: xorl %esi, %esi
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; CHECK-NEXT: movl $4096, %edx
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; CHECK-NEXT: callq memset
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ret void
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}
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@bm_pte = internal global [512 x %struct.kmem_cache_order_objects] zeroinitializer, section ".bss.page_aligned", align 4096
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; CHECK: .section .bss.page_aligned,"aw",@nobits
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; CHECK-NEXT: .p2align 12
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; CHECK-NEXT: bm_pte:
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; CHECK-NEXT: .zero 4096
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; CHECK-NEXT: .size bm_pte, 4096
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