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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
37 lines
1.5 KiB
LLVM
37 lines
1.5 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
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; <rdar://problem/10564621>
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%0 = type opaque
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%struct.NSConstantString = type { i32*, i32, i8*, i32 }
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; Make sure that the string ends up the correct section.
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; CHECK: .section __TEXT,__cstring
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; CHECK-NEXT: L_.str3:
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; CHECK: .section __DATA,__cfstring
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; CHECK-NEXT: .p2align 4
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; CHECK-NEXT: L__unnamed_cfstring_4:
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; CHECK-NEXT: .quad ___CFConstantStringClassReference
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; CHECK-NEXT: .long 1992
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; CHECK-NEXT: .space 4
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; CHECK-NEXT: .quad L_.str3
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; CHECK-NEXT: .long 0
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; CHECK-NEXT: .space 4
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@isLogVisible = global i8 0, align 1
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@__CFConstantStringClassReference = external global [0 x i32]
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@.str3 = private unnamed_addr constant [1 x i8] zeroinitializer, align 1
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@_unnamed_cfstring_4 = private constant %struct.NSConstantString { i32* getelementptr inbounds ([0 x i32], [0 x i32]* @__CFConstantStringClassReference, i32 0, i32 0), i32 1992, i8* getelementptr inbounds ([1 x i8], [1 x i8]* @.str3, i32 0, i32 0), i32 0 }, section "__DATA,__cfstring"
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@null.array = weak_odr constant [1 x i8] zeroinitializer, align 1
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define linkonce_odr void @bar() nounwind ssp align 2 {
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entry:
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%stack = alloca i8*, align 4
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%call = call %0* bitcast (i8* (i8*, i8*, ...)* @objc_msgSend to %0* (i8*, i8*, %0*)*)(i8* null, i8* null, %0* bitcast (%struct.NSConstantString* @_unnamed_cfstring_4 to %0*))
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store i8* getelementptr inbounds ([1 x i8], [1 x i8]* @null.array, i32 0, i32 0), i8** %stack, align 4
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ret void
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}
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declare i8* @objc_msgSend(i8*, i8*, ...) nonlazybind
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