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Summary: In function PPCAIXAsmPrinter::emitTracebackTable() ,the bit "IsBackChainStored" of traceback table always set true, it will cause aix debug tools "dbx" emit an error info "libdebug assertion "(framep->getGpr(STKP, &addr) == DB_SUCCESS && *nextStkpp == addr)" when debug a leaf functions with no stack frame. If a a leaf functions with no stack frame , the bit IsBackChainStored should be unset. Reviewers: ChenZheng Differential Revision: https://reviews.llvm.org/D146071
37 lines
2.5 KiB
LLVM
37 lines
2.5 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff -mcpu=pwr7 \
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; RUN: -mattr=+altivec -vec-extabi -xcoff-traceback-table=true 2>&1 < %s | \
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; RUN: FileCheck --check-prefixes=CHECK-ASM %s
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;; void f(vector float vf, ...) {
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;;}
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define void @f(<4 x float> %vf, ...) #0 {
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entry:
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%vf.addr = alloca <4 x float>, align 16
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store <4 x float> %vf, ptr %vf.addr, align 16
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ret void
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}
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;CHECK-ASM: .vbyte 4, 0x00000000 # Traceback table begin
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;CHECK-ASM-NEXT: .byte 0x00 # Version = 0
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;CHECK-ASM-NEXT: .byte 0x09 # Language = CPlusPlus
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;CHECK-ASM-NEXT: .byte 0x20 # -IsGlobaLinkage, -IsOutOfLineEpilogOrPrologue
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;CHECK-ASM-NEXT: # +HasTraceBackTableOffset, -IsInternalProcedure
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;CHECK-ASM-NEXT: # -HasControlledStorage, -IsTOCless
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;CHECK-ASM-NEXT: # -IsFloatingPointPresent
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;CHECK-ASM-NEXT: # -IsFloatingPointOperationLogOrAbortEnabled
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;CHECK-ASM-NEXT: .byte 0x40 # -IsInterruptHandler, +IsFunctionNamePresent, -IsAllocaUsed
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;CHECK-ASM-NEXT: # OnConditionDirective = 0, -IsCRSaved, -IsLRSaved
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;CHECK-ASM-NEXT: .byte 0x00 # -IsBackChainStored, -IsFixup, NumOfFPRsSaved = 0
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;CHECK-ASM-NEXT: .byte 0x40 # -HasExtensionTable, +HasVectorInfo, NumOfGPRsSaved = 0
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;CHECK-ASM-NEXT: .byte 0x00 # NumberOfFixedParms = 0
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;CHECK-ASM-NEXT: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
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;CHECK-ASM-NEXT: .vbyte 4, L..f0-.f # Function size
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;CHECK-ASM-NEXT: .vbyte 2, 0x0001 # Function name len = 1
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;CHECK-ASM-NEXT: .byte 102 # Function Name
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;CHECK-ASM-NEXT: .byte 0x01 # NumOfVRsSaved = 0, -IsVRSavedOnStack, +HasVarArgs
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;CHECK-ASM-NEXT: .byte 0x03 # NumOfVectorParams = 1, +HasVMXInstruction
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;CHECK-ASM-NEXT: .vbyte 4, 0xc0000000 # Vector Parameter type = vf
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;CHECK-ASM-NEXT: .vbyte 2, 0x0000 # Padding
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;CHECK-ASM-NEXT: # -- End function
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