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[AIX][XCOFF]Implement mergeable const
SUMMARY: In this patch, we map mergeable const objects to the read-only section in the same manner as const objects that are not mergeable. Reviewers: hubert.reinterpretcast,jasonliu Subscribers: wuzish, nemanjai, hiraditya Differential Revision: https://reviews.llvm.org/D71551
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diggerlin
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def1541b7f
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@ -1879,7 +1879,7 @@ MCSection *TargetLoweringObjectFileXCOFF::SelectSectionForGlobal(
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if (Kind.isBSS())
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return DataSection;
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if (Kind.isReadOnly() && !Kind.isMergeableConst())
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if (Kind.isReadOnly())
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return ReadOnlySection;
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report_fatal_error("XCOFF other section types not yet implemented.");
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@ -1800,8 +1800,7 @@ void PPCAIXAsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
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SectionKind GVKind = getObjFileLowering().getKindForGlobal(GV, TM);
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if ((!GVKind.isCommon() && !GVKind.isBSS() && !GVKind.isData() &&
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!GVKind.isReadOnly()) ||
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GVKind.isMergeable2ByteCString() || GVKind.isMergeable4ByteCString() ||
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GVKind.isMergeableConst())
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GVKind.isMergeable2ByteCString() || GVKind.isMergeable4ByteCString())
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report_fatal_error("Encountered a global variable kind that is "
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"not supported yet.");
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166
test/CodeGen/PowerPC/aix-xcoff-mergeable-const.ll
Normal file
166
test/CodeGen/PowerPC/aix-xcoff-mergeable-const.ll
Normal file
@ -0,0 +1,166 @@
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; This file tests the codegen of mergeable const in AIX assembly.
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; This file also tests mergeable const in XCOFF object file generation.
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; RUN: llc -verify-machineinstrs -mcpu=pwr4 -mtriple powerpc-ibm-aix-xcoff < %s | FileCheck %s
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; RUN: llc -verify-machineinstrs -mcpu=pwr4 -mtriple powerpc64-ibm-aix-xcoff < %s | FileCheck %s
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; RUN: llc -verify-machineinstrs -mcpu=pwr4 -mtriple powerpc-ibm-aix-xcoff -filetype=obj -o %t.o < %s
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; RUN: llvm-objdump -D %t.o | FileCheck --check-prefix=CHECKOBJ %s
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; RUN: llvm-readobj -syms %t.o | FileCheck --check-prefix=CHECKSYM %s
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%struct.Merge_cnst32 = type { i64, i32, i64, i32 }
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%struct.Merge_cnst16 = type { i64, i32 }
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%struct.Merge_cnst8 = type { i32, i32 }
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%struct.Merge_cnst4 = type { i16, i8 }
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@__const.main.cnst32 = private unnamed_addr constant %struct.Merge_cnst32 { i64 4611686018427387954, i32 0, i64 0, i32 0 }
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@__const.main.cnst16 = private unnamed_addr constant %struct.Merge_cnst16 { i64 4611686018427387926, i32 0 }
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@__const.main.cnst8 = private unnamed_addr constant %struct.Merge_cnst8 { i32 1073741832, i32 0 }
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@__const.main.cnst4 = private unnamed_addr constant %struct.Merge_cnst4 { i16 16392, i8 0 }
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; Function Attrs: noinline nounwind optnone
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define i32 @main() #0 {
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entry:
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ret i32 0
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}
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;CHECK: .csect .rodata[RO]
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;CHECK-NEXT: .align 4
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;CHECK-NEXT: .L__const.main.cnst32:
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;CHECK-NEXT: .llong 4611686018427387954 # 0x4000000000000032
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;CHECK-NEXT: .long 0 # 0x0
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;CHECK-NEXT: .space 4
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;CHECK-NEXT: .llong 0 # 0x0
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;CHECK-NEXT: .long 0 # 0x0
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;CHECK-NEXT: .space 4
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;CHECK-NEXT: .align 3
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;CHECK-NEXT: .L__const.main.cnst16:
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;CHECK-NEXT: .llong 4611686018427387926 # 0x4000000000000016
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;CHECK-NEXT: .long 0 # 0x0
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;CHECK-NEXT: .space 4
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;CHECK-NEXT: .align 3
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;CHECK-NEXT: .L__const.main.cnst8:
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;CHECK-NEXT: .long 1073741832 # 0x40000008
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;CHECK-NEXT: .long 0 # 0x0
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;CHECK-NEXT: .align 3
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;CHECK-NEXT: .L__const.main.cnst4:
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;CHECK-NEXT: .short 16392 # 0x4008
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;CHECK-NEXT: .byte 0 # 0x0
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;CHECK-NEXT: .space 1
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;CHECKOBJ: 00000000 .text:
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;CHECKOBJ-NEXT: 0: 38 60 00 00 li 3, 0
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;CHECKOBJ-NEXT: 4: 4e 80 00 20 blr
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;CHECKOBJ-NEXT: ...{{[[:space:]] *}}
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;CHECKOBJ-NEXT: 00000010 .rodata:
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;CHECKOBJ-NEXT: 10: 40 00 00 00 bdnzf 0, .+0
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;CHECKOBJ-NEXT: 14: 00 00 00 32 <unknown>
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;CHECKOBJ-NEXT: ...{{[[:space:]] *}}
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;CHECKOBJ-NEXT: 00000030 .L__const.main.cnst16:
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;CHECKOBJ-NEXT: 30: 40 00 00 00 bdnzf 0, .+0
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;CHECKOBJ-NEXT: 34: 00 00 00 16 <unknown>
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;CHECKOBJ-NEXT: ...{{[[:space:]] *}}
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;CHECKOBJ-NEXT: 00000040 .L__const.main.cnst8:
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;CHECKOBJ-NEXT: 40: 40 00 00 08 bdnzf 0, .+8
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;CHECKOBJ-NEXT: 44: 00 00 00 00 <unknown>{{[[:space:]] *}}
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;CHECKOBJ-NEXT: 00000048 .L__const.main.cnst4:
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;CHECKOBJ-NEXT: 48: 40 08 00 00 bdnzf 8, .+0
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;CHECKSYM: Symbol {{[{][[:space:]] *}}Index: [[#Index:]]{{[[:space:]] *}}Name: .rodata
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;CHECKSYM-NEXT: Value (RelocatableAddress): 0x10
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;CHECKSYM-NEXT: Section: .text
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;CHECKSYM-NEXT: Type: 0x0
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;CHECKSYM-NEXT: StorageClass: C_HIDEXT (0x6B)
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;CHECKSYM-NEXT: NumberOfAuxEntries: 1
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;CHECKSYM-NEXT: CSECT Auxiliary Entry {
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;CHECKSYM-NEXT: Index: [[#Index+1]]
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;CHECKSYM-NEXT: SectionLen: 60
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;CHECKSYM-NEXT: ParameterHashIndex: 0x0
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;CHECKSYM-NEXT: TypeChkSectNum: 0x0
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;CHECKSYM-NEXT: SymbolAlignmentLog2: 4
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;CHECKSYM-NEXT: SymbolType: XTY_SD (0x1)
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;CHECKSYM-NEXT: StorageMappingClass: XMC_RO (0x1)
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;CHECKSYM-NEXT: StabInfoIndex: 0x0
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;CHECKSYM-NEXT: StabSectNum: 0x0
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: Symbol {
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;CHECKSYM-NEXT: Index: [[#Index+2]]
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;CHECKSYM-NEXT: Name: .L__const.main.cnst32
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;CHECKSYM-NEXT: Value (RelocatableAddress): 0x10
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;CHECKSYM-NEXT: Section: .text
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;CHECKSYM-NEXT: Type: 0x0
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;CHECKSYM-NEXT: StorageClass: C_HIDEXT (0x6B)
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;CHECKSYM-NEXT: NumberOfAuxEntries: 1
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;CHECKSYM-NEXT: CSECT Auxiliary Entry {
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;CHECKSYM-NEXT: Index: [[#Index+3]]
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;CHECKSYM-NEXT: ContainingCsectSymbolIndex: [[#Index]]
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;CHECKSYM-NEXT: ParameterHashIndex: 0x0
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;CHECKSYM-NEXT: TypeChkSectNum: 0x0
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;CHECKSYM-NEXT: SymbolAlignmentLog2: 0
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;CHECKSYM-NEXT: SymbolType: XTY_LD (0x2)
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;CHECKSYM-NEXT: StorageMappingClass: XMC_RO (0x1)
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;CHECKSYM-NEXT: StabInfoIndex: 0x0
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;CHECKSYM-NEXT: StabSectNum: 0x0
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: Symbol {
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;CHECKSYM-NEXT: Index: [[#Index+4]]
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;CHECKSYM-NEXT: Name: .L__const.main.cnst16
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;CHECKSYM-NEXT: Value (RelocatableAddress): 0x30
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;CHECKSYM-NEXT: Section: .text
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;CHECKSYM-NEXT: Type: 0x0
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;CHECKSYM-NEXT: StorageClass: C_HIDEXT (0x6B)
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;CHECKSYM-NEXT: NumberOfAuxEntries: 1
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;CHECKSYM-NEXT: CSECT Auxiliary Entry {
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;CHECKSYM-NEXT: Index: [[#Index+5]]
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;CHECKSYM-NEXT: ContainingCsectSymbolIndex: [[#Index]]
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;CHECKSYM-NEXT: ParameterHashIndex: 0x0
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;CHECKSYM-NEXT: TypeChkSectNum: 0x0
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;CHECKSYM-NEXT: SymbolAlignmentLog2: 0
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;CHECKSYM-NEXT: SymbolType: XTY_LD (0x2)
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;CHECKSYM-NEXT: StorageMappingClass: XMC_RO (0x1)
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;CHECKSYM-NEXT: StabInfoIndex: 0x0
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;CHECKSYM-NEXT: StabSectNum: 0x0
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: Symbol {
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;CHECKSYM-NEXT: Index: [[#Index+6]]
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;CHECKSYM-NEXT: Name: .L__const.main.cnst8
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;CHECKSYM-NEXT: Value (RelocatableAddress): 0x40
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;CHECKSYM-NEXT: Section: .text
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;CHECKSYM-NEXT: Type: 0x0
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;CHECKSYM-NEXT: StorageClass: C_HIDEXT (0x6B)
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;CHECKSYM-NEXT: NumberOfAuxEntries: 1
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;CHECKSYM-NEXT: CSECT Auxiliary Entry {
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;CHECKSYM-NEXT: Index: [[#Index+7]]
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;CHECKSYM-NEXT: ContainingCsectSymbolIndex: [[#Index]]
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;CHECKSYM-NEXT: ParameterHashIndex: 0x0
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;CHECKSYM-NEXT: TypeChkSectNum: 0x0
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;CHECKSYM-NEXT: SymbolAlignmentLog2: 0
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;CHECKSYM-NEXT: SymbolType: XTY_LD (0x2)
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;CHECKSYM-NEXT: StorageMappingClass: XMC_RO (0x1)
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;CHECKSYM-NEXT: StabInfoIndex: 0x0
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;CHECKSYM-NEXT: StabSectNum: 0x0
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: Symbol {
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;CHECKSYM-NEXT: Index: [[#Index+8]]
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;CHECKSYM-NEXT: Name: .L__const.main.cnst4
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;CHECKSYM-NEXT: Value (RelocatableAddress): 0x48
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;CHECKSYM-NEXT: Section: .text
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;CHECKSYM-NEXT: Type: 0x0
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;CHECKSYM-NEXT: StorageClass: C_HIDEXT (0x6B)
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;CHECKSYM-NEXT: NumberOfAuxEntries: 1
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;CHECKSYM-NEXT: CSECT Auxiliary Entry {
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;CHECKSYM-NEXT: Index: [[#Index+9]]
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;CHECKSYM-NEXT: ContainingCsectSymbolIndex: [[#Index]]
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;CHECKSYM-NEXT: ParameterHashIndex: 0x0
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;CHECKSYM-NEXT: TypeChkSectNum: 0x0
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;CHECKSYM-NEXT: SymbolAlignmentLog2: 0
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;CHECKSYM-NEXT: SymbolType: XTY_LD (0x2)
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;CHECKSYM-NEXT: StorageMappingClass: XMC_RO (0x1)
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;CHECKSYM-NEXT: StabInfoIndex: 0x0
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;CHECKSYM-NEXT: StabSectNum: 0x0
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;CHECKSYM-NEXT: }
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;CHECKSYM-NEXT: }
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