test/CodeGen/X86/taildup-callsiteinfo.mir

# RUN: llc %s -emit-call-site-info -run-pass=block-placement -tail-dup-placement-threshold=4 -o - | FileCheck %s
#
# Test case adapted from test/CodeGen/X86/taildup-heapallocsite.ll.

# CHECK-LABEL: callSites:
# CHECK-NEXT:   - { bb: 1, offset: 1, fwdArgRegs:
# CHECK-NEXT:       - { arg: 0, reg: '$rcx' } }
# CHECK-NEXT:   - { bb: 2, offset: 1, fwdArgRegs:
# CHECK-NEXT:       - { arg: 0, reg: '$rcx' } }

--- |
  target datalayout = "e-m:w-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  target triple = "x86_64-pc-windows-msvc19.22.27905"

  define dso_local void @taildupit(i32* readonly %size_ptr) {
  entry:
    %tobool = icmp eq i32* %size_ptr, null
    br i1 %tobool, label %cond.end, label %cond.true

  cond.true:                                        ; preds = %entry
    %0 = load i32, i32* %size_ptr, align 4
    br label %cond.end

  cond.end:                                         ; preds = %cond.true, %entry
    %cond = phi i32 [ %0, %cond.true ], [ 1, %entry ]
    %call = tail call i8* @alloc(i32 %cond)
    tail call void @f2()
    ret void
  }

  declare dso_local i8* @alloc(i32)

  declare dso_local void @f2()

...
---
name:            taildupit
tracksRegLiveness: true
liveins:
  - { reg: '$rcx', virtual-reg: '' }
callSites:
  - { bb: 3, offset: 0, fwdArgRegs:
      - { arg: 0, reg: '$rcx' } }
body:             |
  bb.0.entry:
    successors: %bb.1(0x30000000), %bb.2(0x50000000)
    liveins: $rcx

    $rsp = frame-setup SUB64ri8 $rsp, 40, implicit-def dead $eflags
    frame-setup SEH_StackAlloc 40
    frame-setup SEH_EndPrologue
    TEST64rr renamable $rcx, renamable $rcx, implicit-def $eflags
    JCC_1 %bb.2, 5, implicit killed $eflags

  bb.1:
    successors: %bb.3(0x80000000)

    renamable $ecx = MOV32ri 1
    JMP_1 %bb.3

  bb.2.cond.true:
    successors: %bb.3(0x80000000)
    liveins: $rcx

    renamable $ecx = MOV32rm killed renamable $rcx, 1, $noreg, 0, $noreg :: (load 4 from %ir.size_ptr)

  bb.3.cond.end:
    liveins: $ecx

    CALL64pcrel32 @alloc, csr_win64, implicit $rsp, implicit $ssp, implicit $ecx, implicit-def $rsp, implicit-def $ssp, implicit-def dead $rax
    SEH_Epilogue
    $rsp = frame-destroy ADD64ri8 $rsp, 40, implicit-def dead $eflags
    TAILJMPd64 @f2, csr_win64, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp

...