llvm/test/CodeGen/NVPTX/addrspacecast-folding.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
; RUN: llc < %s -mcpu=sm_20 -O0 | FileCheck %s
; RUN: %if ptxas %{ llc < %s -mcpu=sm_20 -O0 | %ptxas-verify %}

target triple = "nvptx64-unknown-unknown"

define ptr @test1(ptr %p) {
; CHECK-LABEL: test1(
; CHECK:       {
; CHECK-NEXT:    .reg .b64 %rd<2>;
; CHECK-EMPTY:
; CHECK-NEXT:  // %bb.0:
; CHECK-NEXT:    ld.param.b64 %rd1, [test1_param_0];
; CHECK-NEXT:    st.param.b64 [func_retval0], %rd1;
; CHECK-NEXT:    ret;
  %a = addrspacecast ptr %p to ptr addrspace(5)
  %b = addrspacecast ptr addrspace(5) %a to ptr
  ret ptr %b
}

define ptr addrspace(1) @test2(ptr addrspace(5) %p) {
; CHECK-LABEL: test2(
; CHECK:       {
; CHECK-NEXT:    .reg .b64 %rd<4>;
; CHECK-EMPTY:
; CHECK-NEXT:  // %bb.0:
; CHECK-NEXT:    ld.param.b64 %rd1, [test2_param_0];
; CHECK-NEXT:    cvta.local.u64 %rd2, %rd1;
; CHECK-NEXT:    cvta.to.global.u64 %rd3, %rd2;
; CHECK-NEXT:    st.param.b64 [func_retval0], %rd3;
; CHECK-NEXT:    ret;
  %a = addrspacecast ptr addrspace(5) %p to ptr
  %b = addrspacecast ptr %a to ptr addrspace(1)
  ret ptr addrspace(1) %b
}