llvm/test/CodeGen/AMDGPU/promote-alloca-budget-exhausted.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=kaveri -amdgpu-promote-alloca-to-vector-limit=128 -passes=amdgpu-promote-alloca-to-vector %s -o - | FileCheck %s

; Check that when we see an alloca that's too big to vectorize given the remaining budget,
; we don't give up and we keep looking for other allocas to vectorize.

define amdgpu_kernel void @simple_users_scores() {
; CHECK-LABEL: define amdgpu_kernel void @simple_users_scores(
; CHECK-SAME: ) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT:  [[ENTRY:.*:]]
; CHECK-NEXT:    [[MANYUSERS:%.*]] = alloca [64 x i64], align 4, addrspace(5)
; CHECK-NEXT:    [[MANYUSERS_1:%.*]] = getelementptr i8, ptr addrspace(5) [[MANYUSERS]], i64 2
; CHECK-NEXT:    [[V0:%.*]] = load i8, ptr addrspace(5) [[MANYUSERS_1]], align 1
; CHECK-NEXT:    [[V0_EXT:%.*]] = zext i8 [[V0]] to i64
; CHECK-NEXT:    store i64 [[V0_EXT]], ptr addrspace(5) [[MANYUSERS_1]], align 8
; CHECK-NEXT:    [[MANYUSERS_2:%.*]] = getelementptr i8, ptr addrspace(5) [[MANYUSERS]], i64 1
; CHECK-NEXT:    [[V1:%.*]] = load i8, ptr addrspace(5) [[MANYUSERS_2]], align 1
; CHECK-NEXT:    [[V1_EXT:%.*]] = zext i8 [[V0]] to i64
; CHECK-NEXT:    store i64 [[V1_EXT]], ptr addrspace(5) [[MANYUSERS_2]], align 8
; CHECK-NEXT:    ret void
;
entry:
  ; should get a score of 1
  %simpleuser = alloca [4 x i64], align 4, addrspace(5)
  ; should get a score of 4 and be visited first.
  %manyusers = alloca [64 x i64], align 4, addrspace(5)

  store i64 42, ptr addrspace(5) %simpleuser

  %manyusers.1 = getelementptr i8, ptr addrspace(5) %manyusers, i64 2
  %v0 = load i8, ptr addrspace(5)  %manyusers.1
  %v0.ext = zext i8 %v0 to i64
  store i64 %v0.ext, ptr addrspace(5) %manyusers.1

  %manyusers.2 = getelementptr i8, ptr addrspace(5) %manyusers, i64 1
  %v1 = load i8, ptr addrspace(5)  %manyusers.2
  %v1.ext = zext i8 %v0 to i64
  store i64 %v1.ext, ptr addrspace(5) %manyusers.2

  ret void
}