test/CodeGen/AMDGPU/amdgpu-attributor-trap-leaf.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes --check-globals all --version 6
; RUN: opt -S -mtriple=amdgcn-amd-amdhsa -mcpu=gfx90a -passes=amdgpu-attributor %s | FileCheck %s

; Trap-like intrinsics such as llvm.trap and llvm.debugtrap do not have the
; nocallback attribute, so the AMDGPU attributor used to conservatively drop
; all implicitly-known inputs and AGPR allocation information. Make sure we
; still infer that no implicit inputs are required and that the AGPR allocation
; stays at zero.

declare void @llvm.trap()

declare void @llvm.debugtrap()

define amdgpu_kernel void @trap_kernel() {
; CHECK-LABEL: define amdgpu_kernel void @trap_kernel(
; CHECK-SAME: ) #[[ATTR2:[0-9]+]] {
; CHECK-NEXT:    call void @llvm.trap()
; CHECK-NEXT:    ret void
;
  call void @llvm.trap()
  ret void
}

define amdgpu_kernel void @trap_kernel_with_handler() {
; CHECK-LABEL: define amdgpu_kernel void @trap_kernel_with_handler(
; CHECK-SAME: ) #[[ATTR3:[0-9]+]] {
; CHECK-NEXT:    call void @llvm.trap() #[[ATTR4:[0-9]+]]
; CHECK-NEXT:    ret void
;
  call void @llvm.trap() #0
  ret void
}

define amdgpu_kernel void @debugtrap_kernel() {
; CHECK-LABEL: define amdgpu_kernel void @debugtrap_kernel(
; CHECK-SAME: ) #[[ATTR2]] {
; CHECK-NEXT:    call void @llvm.debugtrap()
; CHECK-NEXT:    ret void
;
  call void @llvm.debugtrap()
  ret void
}

; Test that a trap with both trap-func-name and nocallback is still safe
define amdgpu_kernel void @trap_kernel_with_handler_and_nocallback() {
; CHECK-LABEL: define amdgpu_kernel void @trap_kernel_with_handler_and_nocallback(
; CHECK-SAME: ) #[[ATTR2]] {
; CHECK-NEXT:    call void @llvm.trap() #[[ATTR5:[0-9]+]]
; CHECK-NEXT:    ret void
;
  call void @llvm.trap() #1
  ret void
}

attributes #0 = { "trap-func-name"="handler" }
attributes #1 = { nocallback "trap-func-name"="handler" }

;.
; CHECK: attributes #[[ATTR0:[0-9]+]] = { cold noreturn nounwind memory(inaccessiblemem: write) "target-cpu"="gfx90a" }
; CHECK: attributes #[[ATTR1:[0-9]+]] = { nounwind "target-cpu"="gfx90a" }
; CHECK: attributes #[[ATTR2]] = { "amdgpu-agpr-alloc"="0" "amdgpu-no-cluster-id-x" "amdgpu-no-cluster-id-y" "amdgpu-no-cluster-id-z" "amdgpu-no-completion-action" "amdgpu-no-default-queue" "amdgpu-no-dispatch-id" "amdgpu-no-dispatch-ptr" "amdgpu-no-flat-scratch-init" "amdgpu-no-heap-ptr" "amdgpu-no-hostcall-ptr" "amdgpu-no-implicitarg-ptr" "amdgpu-no-lds-kernel-id" "amdgpu-no-multigrid-sync-arg" "amdgpu-no-queue-ptr" "amdgpu-no-workgroup-id-x" "amdgpu-no-workgroup-id-y" "amdgpu-no-workgroup-id-z" "amdgpu-no-workitem-id-x" "amdgpu-no-workitem-id-y" "amdgpu-no-workitem-id-z" "target-cpu"="gfx90a" "uniform-work-group-size"="false" }
; CHECK: attributes #[[ATTR3]] = { "amdgpu-no-cluster-id-x" "amdgpu-no-cluster-id-y" "amdgpu-no-cluster-id-z" "amdgpu-no-completion-action" "amdgpu-no-default-queue" "amdgpu-no-dispatch-id" "amdgpu-no-dispatch-ptr" "amdgpu-no-flat-scratch-init" "amdgpu-no-heap-ptr" "amdgpu-no-hostcall-ptr" "amdgpu-no-implicitarg-ptr" "amdgpu-no-lds-kernel-id" "amdgpu-no-multigrid-sync-arg" "amdgpu-no-queue-ptr" "amdgpu-no-workgroup-id-x" "amdgpu-no-workgroup-id-y" "amdgpu-no-workgroup-id-z" "amdgpu-no-workitem-id-x" "amdgpu-no-workitem-id-y" "amdgpu-no-workitem-id-z" "target-cpu"="gfx90a" "uniform-work-group-size"="false" }
; CHECK: attributes #[[ATTR4]] = { "trap-func-name"="handler" }
; CHECK: attributes #[[ATTR5]] = { nocallback "trap-func-name"="handler" }
;.