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llvm-project/llvm/test/CodeGen/PowerPC/aix-exception.ll
Maryam Moghadas 8f6f5ec776
[PowerPC] Move __ehinfo TOC entries to the end of the TOC section (#73586) 
On AIX, the __ehinfo toc-entry is never referenced directly using
instructions, therefore we can allocate them with the TE storage mapping
class to move them to the end of TOC.
2023-12-08 15:03:11 -05:00

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LLVM
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; RUN: llc -verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff -mcpu=pwr4 \
; RUN: -mattr=-altivec -simplifycfg-require-and-preserve-domtree=1 < %s | \
; RUN: FileCheck --check-prefixes=ASM,ASMNFS,ASM32 %s
; RUN: llc -verify-machineinstrs -mtriple powerpc64-ibm-aix-xcoff -mcpu=pwr4 \
; RUN: -mattr=-altivec -simplifycfg-require-and-preserve-domtree=1 < %s | \
; RUN: FileCheck --check-prefixes=ASM,ASMNFS,ASM64 %s
; RUN: llc -verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff -mcpu=pwr4 \
; RUN: -mattr=-altivec -simplifycfg-require-and-preserve-domtree=1 \
; RUN: -function-sections < %s | \
; RUN: FileCheck --check-prefixes=ASM,ASMFS,ASM32 %s
; RUN: llc -verify-machineinstrs -mtriple powerpc64-ibm-aix-xcoff -mcpu=pwr4 \
; RUN: -mattr=-altivec -simplifycfg-require-and-preserve-domtree=1 \
; RUN: -function-sections < %s | \
; RUN: FileCheck --check-prefixes=ASM,ASMFS,ASM64 %s
@_ZTIi = external constant ptr
define void @_Z9throwFuncv() {
entry:
%exception = call ptr @__cxa_allocate_exception(i32 4) #2
store i32 1, ptr %exception, align 16
call void @__cxa_throw(ptr %exception, ptr @_ZTIi, ptr null) #3
unreachable
}
; ASMNFS: ._Z9throwFuncv:
; ASMFS: .csect ._Z9throwFuncv[PR],5
; ASM: bl .__cxa_allocate_exception[PR]
; ASM: nop
; ASM32: lwz 4, L..C0(2)
; ASM64: ld 4, L..C0(2)
; ASM: bl .__cxa_throw[PR]
; ASM: nop
define i32 @_Z9catchFuncv() personality ptr @__xlcxx_personality_v1 {
entry:
%retval = alloca i32, align 4
%exn.slot = alloca ptr, align 4
%ehselector.slot = alloca i32, align 4
%0 = alloca i32, align 4
invoke void @_Z9throwFuncv()
to label %invoke.cont unwind label %lpad
invoke.cont: ; preds = %entry
br label %try.cont
lpad: ; preds = %entry
%1 = landingpad { ptr, i32 }
catch ptr @_ZTIi
%2 = extractvalue { ptr, i32 } %1, 0
store ptr %2, ptr %exn.slot, align 4
%3 = extractvalue { ptr, i32 } %1, 1
store i32 %3, ptr %ehselector.slot, align 4
br label %catch.dispatch
catch.dispatch: ; preds = %lpad
%sel = load i32, ptr %ehselector.slot, align 4
%4 = call i32 @llvm.eh.typeid.for(ptr @_ZTIi) #2
%matches = icmp eq i32 %sel, %4
br i1 %matches, label %catch, label %eh.resume
catch: ; preds = %catch.dispatch
%exn = load ptr, ptr %exn.slot, align 4
%5 = call ptr @__cxa_begin_catch(ptr %exn) #2
%6 = load i32, ptr %5, align 4
store i32 %6, ptr %0, align 4
store i32 2, ptr %retval, align 4
call void @__cxa_end_catch() #2
br label %return
try.cont: ; preds = %invoke.cont
store i32 1, ptr %retval, align 4
br label %return
return: ; preds = %try.cont, %catch
%7 = load i32, ptr %retval, align 4
ret i32 %7
eh.resume: ; preds = %catch.dispatch
%exn1 = load ptr, ptr %exn.slot, align 4
%sel2 = load i32, ptr %ehselector.slot, align 4
%lpad.val = insertvalue { ptr, i32 } undef, ptr %exn1, 0
%lpad.val3 = insertvalue { ptr, i32 } %lpad.val, i32 %sel2, 1
resume { ptr, i32 } %lpad.val3
}
; ASMNFS: ._Z9catchFuncv:
; ASMFS: .csect ._Z9catchFuncv[PR],5
; ASM: L..func_begin0:
; ASM: # %bb.0: # %entry
; ASM: mflr 0
; ASM: L..tmp0:
; ASM: bl ._Z9throwFuncv
; ASM: nop
; ASM: L..tmp1:
; ASM: # %bb.1: # %invoke.cont
; ASM: li 3, 1
; ASM: L..BB1_2: # %return
; ASM: mtlr 0
; ASM: blr
; ASM: L..BB1_3: # %lpad
; ASM: L..tmp2:
; ASM: bl .__cxa_begin_catch[PR]
; ASM: nop
; ASM: bl .__cxa_end_catch[PR]
; ASM: nop
; ASM: b L..BB1_2
; ASM: L.._Z9catchFuncv0:
; ASM: .vbyte 4, 0x00000000 # Traceback table begin
; ASM: .byte 0x00 # Version = 0
; ASM: .byte 0x09 # Language = CPlusPlus
; ASM: .byte 0x20 # -IsGlobaLinkage, -IsOutOfLineEpilogOrPrologue
; ASM: # +HasTraceBackTableOffset, -IsInternalProcedure
; ASM: # -HasControlledStorage, -IsTOCless
; ASM: # -IsFloatingPointPresent
; ASM: # -IsFloatingPointOperationLogOrAbortEnabled
; ASM: .byte 0x41 # -IsInterruptHandler, +IsFunctionNamePresent, -IsAllocaUsed
; ASM: # OnConditionDirective = 0, -IsCRSaved, +IsLRSaved
; ASM: .byte 0x80 # +IsBackChainStored, -IsFixup, NumOfFPRsSaved = 0
; ASM: .byte 0x80 # +HasExtensionTable, -HasVectorInfo, NumOfGPRsSaved = 0
; ASM: .byte 0x00 # NumberOfFixedParms = 0
; ASM: .byte 0x01 # NumberOfFPParms = 0, +HasParmsOnStack
; ASMNFS: .vbyte 4, L.._Z9catchFuncv0-._Z9catchFuncv # Function size
; ASMFS: .vbyte 4, L.._Z9catchFuncv0-._Z9catchFuncv[PR] # Function size
; ASM: .vbyte 2, 0x000d # Function name len = 13
; ASM: .byte "_Z9catchFuncv" # Function Name
; ASM: .byte 0x08 # ExtensionTableFlag = TB_EH_INFO
; ASM: .align 2
; ASM32: .vbyte 4, L..C1-TOC[TC0] # EHInfo Table
; ASM64: .vbyte 8, L..C1-TOC[TC0] # EHInfo Table
; ASM: L..func_end0:
; ASMNFS: .csect .gcc_except_table[RO],2
; ASMFS: .csect .gcc_except_table._Z9catchFuncv[RO],2
; ASM: .align 2
; ASM: GCC_except_table1:
; ASM: L..exception0:
; ASM: .byte 255 # @LPStart Encoding = omit
; ASM32: .byte 187 # @TType Encoding = indirect datarel sdata4
; ASM64: .byte 188 # @TType Encoding = indirect datarel sdata8
; ASM32: .byte 37
; ASM64: .byte 41
; ASM: .byte 3 # Call site Encoding = udata4
; ASM: .byte 26
; ASM: .vbyte 4, L..tmp0-L..func_begin0 # >> Call Site 1 <<
; ASM: .vbyte 4, L..tmp1-L..tmp0 # Call between L..tmp0 and L..tmp1
; ASM: .vbyte 4, L..tmp2-L..func_begin0 # jumps to L..tmp2
; ASM: .byte 1 # On action: 1
; ASM: .vbyte 4, L..tmp1-L..func_begin0 # >> Call Site 2 <<
; ASM: .vbyte 4, L..func_end0-L..tmp1 # Call between L..tmp1 and L..func_end0
; ASM: .vbyte 4, 0 # has no landing pad
; ASM: .byte 0 # On action: cleanup
; ASM: L..cst_end0:
; ASM: .byte 1 # >> Action Record 1 <<
; ASM: # Catch TypeInfo 1
; ASM: .byte 0 # No further actions
; ASM: .align 2
; ASM: # >> Catch TypeInfos <<
; ASM32: .vbyte 4, L..C0-TOC[TC0] # TypeInfo 1
; ASM64: .vbyte 8, L..C0-TOC[TC0] # TypeInfo 1
; ASM: L..ttbase0:
; ASM: .align 2
; ASMNFS: .csect .eh_info_table[RW],2
; ASMFS: .csect .eh_info_table._Z9catchFuncv[RW],2
; ASM: __ehinfo.1:
; ASM: .vbyte 4, 0
; ASM32: .align 2
; ASM32: .vbyte 4, GCC_except_table1
; ASM32: .vbyte 4, __xlcxx_personality_v1[DS]
; ASM64: .align 3
; ASM64: .vbyte 8, GCC_except_table1
; ASM64: .vbyte 8, __xlcxx_personality_v1[DS]
; ASM: .toc
; ASM: L..C0:
; ASM: .tc _ZTIi[TC],_ZTIi[UA]
; ASM: L..C1:
; ASM: .tc __ehinfo.1[TE],__ehinfo.1
declare ptr @__cxa_allocate_exception(i32)
declare void @__cxa_throw(ptr, ptr, ptr)
declare i32 @__xlcxx_personality_v1(...)
declare i32 @llvm.eh.typeid.for(ptr)
declare ptr @__cxa_begin_catch(ptr)
declare void @__cxa_end_catch()
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