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3ad7648361
Extend FixupStatepointCallerSaved pass with ability to spill statepoint GC pointer arguments (optionally allowing them on CSRs). Special handling is required for invoke statepoints, because at MI level single landing pad may be shared by multiple statepoints, so we must ensure we spill landing pad's live-ins into the same stack slots. Full statepoint refactoring change set is available at D81603. Reviewed By: skatkov Differential Revision: https://reviews.llvm.org/D81647
87 lines
3.4 KiB
YAML
87 lines
3.4 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -o - %s -fixup-allow-gcptr-in-csr=false -run-pass fixup-statepoint-caller-saved | FileCheck %s
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--- |
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; ModuleID = 'test/CodeGen/X86/statepoint-fixup-call.ll'
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source_filename = "test/CodeGen/X86/statepoint-fixup-call.ll"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-linux-gnu"
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declare void @foo()
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define i8 addrspace(1)* @test_one(i8 addrspace(1)* %p) gc "statepoint-example" {
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entry:
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%token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @foo, i32 0, i32 0, i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* %p) ]
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%p2 = call i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token %token, i32 0, i32 0) ; (%p, %p)
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ret i8 addrspace(1)* %p2
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}
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declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 immarg, i32 immarg, void ()*, i32 immarg, i32 immarg, ...)
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; Function Attrs: nounwind readonly
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declare i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token, i32 immarg, i32 immarg) #0
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; Function Attrs: nounwind
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declare void @llvm.stackprotector(i8*, i8**) #1
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attributes #0 = { nounwind readonly }
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attributes #1 = { nounwind }
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...
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---
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name: test_one
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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: '$rdi', 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: 0
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offsetAdjustment: 0
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maxAlignment: 1
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adjustsStack: false
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hasCalls: true
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stackProtector: ''
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maxCallFrameSize: 4294967295
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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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stack: []
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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.entry:
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liveins: $rdi
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; CHECK-LABEL: name: test_one
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; CHECK: liveins: $rdi
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; CHECK: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
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; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, killed $rdi :: (store 8 into %stack.0)
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; CHECK: STATEPOINT 0, 0, 0, @foo, 2, 0, 2, 0, 2, 0, 1, 8, %stack.0, 0, 1, 8, %stack.0, 0, csr_64, implicit-def $rsp, implicit-def $ssp :: (load store 8 on %stack.0)
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; CHECK: $rdi = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
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; CHECK: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
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; CHECK: $rax = COPY killed renamable $rdi
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; CHECK: RET 0, killed $rax
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ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
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renamable $rdi = STATEPOINT 0, 0, 0, @foo, 2, 0, 2, 0, 2, 0, killed renamable $rdi, renamable $rdi(tied-def 0), csr_64, implicit-def $rsp, implicit-def $ssp
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ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
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$rax = COPY killed renamable $rdi
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RET 0, killed $rax
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...
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