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Fix PR6921: globals were not getting correctly rounded up to their
preferred alignment unless they were common or some other special case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102300 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -285,7 +285,7 @@ void AsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
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OutStreamer.SwitchSection(TheSection);
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EmitLinkage(GV->getLinkage(), GVSym);
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EmitAlignment(AlignLog, GV);
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EmitAlignment(AlignLog, GV, AlignLog);
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if (isVerbose()) {
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WriteAsOperand(OutStreamer.GetCommentOS(), GV,
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@ -987,7 +987,7 @@ bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
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unsigned Align = Log2_32(TD->getPointerPrefAlignment());
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if (GV->getName() == "llvm.global_ctors") {
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OutStreamer.SwitchSection(getObjFileLowering().getStaticCtorSection());
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EmitAlignment(Align, 0);
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EmitAlignment(Align);
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EmitXXStructorList(GV->getInitializer());
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if (TM.getRelocationModel() == Reloc::Static &&
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@ -1001,7 +1001,7 @@ bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
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if (GV->getName() == "llvm.global_dtors") {
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OutStreamer.SwitchSection(getObjFileLowering().getStaticDtorSection());
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EmitAlignment(Align, 0);
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EmitAlignment(Align);
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EmitXXStructorList(GV->getInitializer());
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if (TM.getRelocationModel() == Reloc::Static &&
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16
test/CodeGen/X86/alignment.ll
Normal file
16
test/CodeGen/X86/alignment.ll
Normal file
@ -0,0 +1,16 @@
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; RUN: llc %s -o - -mtriple=x86_64-linux-gnu | FileCheck %s
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; This can get rounded up to the preferred alignment (16).
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; PR6921
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@GlobalA = global { [384 x i8] } zeroinitializer, align 8
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; CHECK: .bss
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; CHECK: .globl GlobalA
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; CHECK: .align 16
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; CHECK: GlobalA:
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; CHECK: .zero 384
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; Common variables should also get rounded up to the preferred alignment (16).
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@GlobalB = common global { [384 x i8] } zeroinitializer, align 8
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; CHECK: .comm GlobalB,384,16
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@ -28,8 +28,9 @@ return:
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declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind
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; CORE2: .align 3
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; CORE2: .section
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; CORE2: .align 4
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; CORE2-NEXT: _.str1:
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; CORE2-NEXT: .asciz "DHRYSTONE PROGRAM, SOME STRING"
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; CORE2: .align 3
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; CORE2: .align 4
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; CORE2-NEXT: _.str3:
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