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Summary: Make sure that any new and optimized objects created during GlobalOPT copy all the attributes from the base object. A good example of improper behavior in the current implementation is section information associated with the GlobalObject. If a section was set for it, and GlobalOpt is creating/modifying a new object based on this one (often copying the original name), without this change new object will be placed in a default section, resulting in inappropriate properties of the new variable. The argument here is that if customer specified a section for a variable, any changes to it that compiler does should not cause it to change that section allocation. Moreover, any other properties worth representation in copyAttributesFrom() should also be propagated. Reviewers: jmolloy, joker-eph, joker.eph Subscribers: slarin, joker.eph, rafael, tobiasvk, llvm-commits Differential Revision: http://reviews.llvm.org/D16074 llvm-svn: 258556
28 lines
930 B
LLVM
28 lines
930 B
LLVM
; Verify that section assignment is copied during SROA
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; RUN: opt < %s -globalopt -S | FileCheck %s
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; CHECK: @G.0
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; CHECK: section ".foo"
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; CHECK: @G.1
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; CHECK: section ".foo"
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; CHECK: @G.2
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; CHECK: section ".foo"
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%T = type { double, double, double }
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@G = internal global %T zeroinitializer, align 16, section ".foo"
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define void @test() {
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store double 1.0, double* getelementptr (%T, %T* @G, i32 0, i32 0), align 16
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store double 2.0, double* getelementptr (%T, %T* @G, i32 0, i32 1), align 8
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store double 3.0, double* getelementptr (%T, %T* @G, i32 0, i32 2), align 16
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ret void
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}
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define double @test2() {
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%V1 = load double, double* getelementptr (%T, %T* @G, i32 0, i32 0), align 16
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%V2 = load double, double* getelementptr (%T, %T* @G, i32 0, i32 1), align 8
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%V3 = load double, double* getelementptr (%T, %T* @G, i32 0, i32 2), align 16
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%R = fadd double %V1, %V2
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%R2 = fadd double %R, %V3
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ret double %R2
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}
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