llvm-project/llvm/test/CodeGen/X86/patchpoint.ll

; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 -disable-fp-elim | FileCheck %s

; Trivial patchpoint codegen
;
define i64 @trivial_patchpoint_codegen(i64 %p1, i64 %p2, i64 %p3, i64 %p4) {
entry:
; CHECK-LABEL: trivial_patchpoint_codegen:
; CHECK:      movabsq $-559038736, %r11
; CHECK-NEXT: callq *%r11
; CHECK-NEXT: xchgw %ax, %ax
; CHECK:      movq %rax, %[[REG:r.+]]
; CHECK:      callq *%r11
; CHECK-NEXT: xchgw %ax, %ax
; CHECK:      movq %[[REG]], %rax
; CHECK:      ret
  %resolveCall2 = inttoptr i64 -559038736 to i8*
  %result = tail call i64 (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i64 2, i32 15, i8* %resolveCall2, i32 4, i64 %p1, i64 %p2, i64 %p3, i64 %p4)
  %resolveCall3 = inttoptr i64 -559038737 to i8*
  tail call void (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i64 3, i32 15, i8* %resolveCall3, i32 2, i64 %p1, i64 %result)
  ret i64 %result
}

; Caller frame metadata with stackmaps. This should not be optimized
; as a leaf function.
;
; CHECK-LABEL: caller_meta_leaf
; CHECK: subq $32, %rsp
; CHECK: Ltmp
; CHECK: addq $32, %rsp
; CHECK: ret
define void @caller_meta_leaf() {
entry:
  %metadata = alloca i64, i32 3, align 8
  store i64 11, i64* %metadata
  store i64 12, i64* %metadata
  store i64 13, i64* %metadata
  call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 4, i32 0, i64* %metadata)
  ret void
}

; Test the webkit_jscc calling convention.
; One argument will be passed in register, the other will be pushed on the stack.
; Return value in $rax.
define void @jscall_patchpoint_codegen(i64 %p1, i64 %p2, i64 %p3, i64 %p4) {
entry:
; CHECK-LABEL: jscall_patchpoint_codegen:
; CHECK:      Ltmp
; CHECK:      movq %r{{.+}}, (%rsp)
; CHECK:      movq %r{{.+}}, %rax
; CHECK:      Ltmp
; CHECK-NEXT: movabsq $-559038736, %r11
; CHECK-NEXT: callq *%r11
; CHECK:      movq %rax, (%rsp)
; CHECK:      callq
  %resolveCall2 = inttoptr i64 -559038736 to i8*
  %result = tail call webkit_jscc i64 (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i64 5, i32 15, i8* %resolveCall2, i32 2, i64 %p4, i64 %p2)
  %resolveCall3 = inttoptr i64 -559038737 to i8*
  tail call webkit_jscc void (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i64 6, i32 15, i8* %resolveCall3, i32 2, i64 %p4, i64 %result)
  ret void
}

; Test if the arguments are properly aligned and that we don't store undef arguments.
define i64 @jscall_patchpoint_codegen2(i64 %callee) {
entry:
; CHECK-LABEL: jscall_patchpoint_codegen2:
; CHECK:      Ltmp
; CHECK:      movq $6, 24(%rsp)
; CHECK-NEXT: movl $4, 16(%rsp)
; CHECK-NEXT: movq $2, (%rsp)
; CHECK:      Ltmp
; CHECK-NEXT: movabsq $-559038736, %r11
; CHECK-NEXT: callq *%r11
  %call = inttoptr i64 -559038736 to i8*
  %result = call webkit_jscc i64 (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i64 7, i32 15, i8* %call, i32 6, i64 %callee, i64 2, i64 undef, i32 4, i32 undef, i64 6)
  ret i64 %result
}

; Test if the arguments are properly aligned and that we don't store undef arguments.
define i64 @jscall_patchpoint_codegen3(i64 %callee) {
entry:
; CHECK-LABEL: jscall_patchpoint_codegen3:
; CHECK:      Ltmp
; CHECK:      movq $10, 48(%rsp)
; CHECK-NEXT: movl  $8, 36(%rsp)
; CHECK-NEXT: movq  $6, 24(%rsp)
; CHECK-NEXT: movl  $4, 16(%rsp)
; CHECK-NEXT: movq  $2, (%rsp)
; CHECK:      Ltmp
; CHECK-NEXT: movabsq $-559038736, %r11
; CHECK-NEXT: callq *%r11
  %call = inttoptr i64 -559038736 to i8*
  %result = call webkit_jscc i64 (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i64 7, i32 15, i8* %call, i32 10, i64 %callee, i64 2, i64 undef, i32 4, i32 undef, i64 6, i32 undef, i32 8, i32 undef, i64 10)
  ret i64 %result
}

; Test patchpoints reusing the same TargetConstant.
; <rdar:15390785> Assertion failed: (CI.getNumArgOperands() >= NumArgs + 4)
; There is no way to verify this, since it depends on memory allocation.
; But I think it's useful to include as a working example.
define i64 @testLowerConstant(i64 %arg, i64 %tmp2, i64 %tmp10, i64* %tmp33, i64 %tmp79) {
entry:
  %tmp80 = add i64 %tmp79, -16
  %tmp81 = inttoptr i64 %tmp80 to i64*
  %tmp82 = load i64* %tmp81, align 8
  tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 14, i32 5, i64 %arg, i64 %tmp2, i64 %tmp10, i64 %tmp82)
  tail call void (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i64 15, i32 30, i8* null, i32 3, i64 %arg, i64 %tmp10, i64 %tmp82)
  %tmp83 = load i64* %tmp33, align 8
  %tmp84 = add i64 %tmp83, -24
  %tmp85 = inttoptr i64 %tmp84 to i64*
  %tmp86 = load i64* %tmp85, align 8
  tail call void (i64, i32, ...)* @llvm.experimental.stackmap(i64 17, i32 5, i64 %arg, i64 %tmp10, i64 %tmp86)
  tail call void (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.void(i64 18, i32 30, i8* null, i32 3, i64 %arg, i64 %tmp10, i64 %tmp86)
  ret i64 10
}

; Test small patchpoints that don't emit calls.
define void @small_patchpoint_codegen(i64 %p1, i64 %p2, i64 %p3, i64 %p4) {
entry:
; CHECK-LABEL: small_patchpoint_codegen:
; CHECK:      Ltmp
; CHECK:      nopl 8(%rax,%rax)
; CHECK-NEXT: popq
; CHECK-NEXT: ret
  %result = tail call i64 (i64, i32, i8*, i32, ...)* @llvm.experimental.patchpoint.i64(i64 5, i32 5, i8* null, i32 2, i64 %p1, i64 %p2)
  ret void
}

declare void @llvm.experimental.stackmap(i64, i32, ...)
declare void @llvm.experimental.patchpoint.void(i64, i32, i8*, i32, ...)
declare i64 @llvm.experimental.patchpoint.i64(i64, i32, i8*, i32, ...)