34e70d722d
Every basic block section symbol created by -fbasic-block-sections will contain ".__part." to know that this symbol corresponds to a basic block fragment of the function. This patch solves two problems: a) Like D89617, we want function symbols with suffixes to be properly qualified so that external tools like profile aggregators know exactly what this symbol corresponds to. b) The current basic block naming just adds a ".N" to the symbol name where N is some integer. This collides with how clang creates __cxx_global_var_init.N. clang creates these symbol names to call constructor functions and basic block symbol naming should not use the same style. Fixed all the test cases and added an extra test for __cxx_global_var_init breakage. Differential Revision: https://reviews.llvm.org/D93082
132 lines
4.1 KiB
YAML
132 lines
4.1 KiB
YAML
# Start after bbsections0-prepare and check if the right code is generated.
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# RUN: llc -mtriple x86_64-unknown-linux-gnu -start-after=bbsections-prepare %s -o - | FileCheck %s -check-prefix=CHECK
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# How to generate the input:
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# foo.cc
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# int foo(bool k) {
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# if (k) return 1;
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# return 0;
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# }
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#
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# clang -O0 -S -emit-llvm foo.cc
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# llc < foo.ll -stop-after=bbsections-prepare -basic-block-sections=all
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--- |
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; Function Attrs: noinline nounwind optnone uwtable
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define dso_local i32 @_Z3foob(i1 zeroext %0) #0 {
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%2 = alloca i32, align 4
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%3 = alloca i8, align 1
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%4 = zext i1 %0 to i8
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store i8 %4, i8* %3, align 1
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%5 = load i8, i8* %3, align 1
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%6 = trunc i8 %5 to i1
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br i1 %6, label %7, label %8
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7: ; preds = %1
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store i32 1, i32* %2, align 4
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br label %9
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8: ; preds = %1
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store i32 0, i32* %2, align 4
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br label %9
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9: ; preds = %8, %7
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%10 = load i32, i32* %2, align 4
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ret i32 %10
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}
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attributes #0 = { "frame-pointer"="all" "target-cpu"="x86-64" }
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...
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---
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name: _Z3foob
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alignment: 16
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exposesReturnsTwice: false
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legalized: false
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regBankSelected: false
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selected: false
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failedISel: false
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tracksRegLiveness: true
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hasWinCFI: false
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registers: []
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liveins:
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- { reg: '$edi', virtual-reg: '' }
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frameInfo:
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isFrameAddressTaken: false
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isReturnAddressTaken: false
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hasStackMap: false
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hasPatchPoint: false
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stackSize: 8
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offsetAdjustment: -8
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maxAlignment: 4
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adjustsStack: false
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hasCalls: false
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stackProtector: ''
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maxCallFrameSize: 0
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cvBytesOfCalleeSavedRegisters: 0
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hasOpaqueSPAdjustment: false
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hasVAStart: false
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hasMustTailInVarArgFunc: false
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localFrameSize: 0
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savePoint: ''
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restorePoint: ''
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fixedStack:
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- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
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callee-saved-register: '', callee-saved-restored: true, debug-info-variable: '',
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debug-info-expression: '', debug-info-location: '' }
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stack:
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- { id: 0, type: default, offset: -24, size: 4,
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alignment: 4, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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- { id: 1, type: default, offset: -17, size: 1,
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alignment: 1, stack-id: default, callee-saved-register: '', callee-saved-restored: true,
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debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
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callSites: []
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constants: []
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machineFunctionInfo: {}
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body: |
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bb.0 (%ir-block.1, align 4, bbsections 0):
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successors: %bb.2(0x40000000), %bb.1(0x40000000)
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liveins: $edi
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frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
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CFI_INSTRUCTION def_cfa_offset 16
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CFI_INSTRUCTION offset $rbp, -16
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$rbp = frame-setup MOV64rr $rsp
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CFI_INSTRUCTION def_cfa_register $rbp
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renamable $dil = AND8ri renamable $dil, 1, implicit-def dead $eflags, implicit killed $edi, implicit-def $edi
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MOV8mr $rbp, 1, $noreg, -1, $noreg, renamable $dil, implicit killed $edi :: (store 1 into %ir.3)
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TEST8mi $rbp, 1, $noreg, -1, $noreg, 1, implicit-def $eflags :: (load 1 from %ir.3)
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JCC_1 %bb.2, 4, implicit killed $eflags
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JMP_1 %bb.1
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bb.1 (%ir-block.7, bbsections 1):
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successors: %bb.3(0x80000000)
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MOV32mi $rbp, 1, $noreg, -8, $noreg, 1 :: (store 4 into %ir.2)
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JMP_1 %bb.3
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bb.2 (%ir-block.8, bbsections 2):
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successors: %bb.3(0x80000000)
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MOV32mi $rbp, 1, $noreg, -8, $noreg, 0 :: (store 4 into %ir.2)
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JMP_1 %bb.3
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bb.3 (%ir-block.9, bbsections 3):
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renamable $eax = MOV32rm $rbp, 1, $noreg, -8, $noreg :: (load 4 from %ir.2)
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$rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp
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CFI_INSTRUCTION def_cfa $rsp, 8
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RETQ implicit $eax
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...
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# CHECK: _Z3foob:
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# CHECK: .section .text,"ax",@progbits,unique
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# CHECK: _Z3foob.__part.1:
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# CHECK: .section .text,"ax",@progbits,unique
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# CHECK: _Z3foob.__part.2:
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# CHECK: .section .text,"ax",@progbits,unique
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# CHECK: _Z3foob.__part.3:
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