test/Transforms/InstCombine/gep-addrspace.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-pc-win32"

%myStruct = type { float, [3 x float], [4 x float], i32 }

; make sure that we are not crashing when creating an illegal type
define void @func(ptr addrspace(1) nocapture %p) nounwind {
; CHECK-LABEL: @func(
; CHECK-NEXT:    ret void
;
  %B = addrspacecast ptr addrspace(1) %p to ptr
  %C = getelementptr inbounds %myStruct, ptr %B, i32 0, i32 1
  %D = getelementptr inbounds [3 x float], ptr %C, i32 0, i32 2
  %E = load float, ptr %D, align 4
  %F = fsub float %E, undef
  ret void
}

@array = internal addrspace(3) global [256 x float] zeroinitializer, align 4
@scalar = internal addrspace(3) global float 0.000000e+00, align 4

define void @keep_necessary_addrspacecast(i64 %i, ptr %out0, ptr %out1) {
; CHECK-LABEL: @keep_necessary_addrspacecast(
; CHECK-NEXT:    [[T0:%.*]] = getelementptr [256 x float], ptr addrspacecast (ptr addrspace(3) @array to ptr), i64 0, i64 [[I:%.*]]
; CHECK-NEXT:    [[T1:%.*]] = getelementptr [0 x float], ptr addrspacecast (ptr addrspace(3) @scalar to ptr), i64 0, i64 [[I]]
; CHECK-NEXT:    store ptr [[T0]], ptr [[OUT0:%.*]], align 4
; CHECK-NEXT:    store ptr [[T1]], ptr [[OUT1:%.*]], align 4
; CHECK-NEXT:    ret void
;
  %t0 = getelementptr [256 x float], ptr addrspacecast (ptr addrspace(3) @array to ptr), i64 0, i64 %i
  %t1 = getelementptr [0 x float], ptr addrspacecast (ptr addrspace(3) @scalar to ptr), i64 0, i64 %i
  store ptr %t0, ptr %out0, align 4
  store ptr %t1, ptr %out1, align 4
  ret void
}

declare void @escape_alloca(ptr)

; check that addrspacecast is stripped when trying to mark a GEP as inbounds
define { i8, i8 } @inbounds_after_addrspacecast() {
; CHECK-LABEL: @inbounds_after_addrspacecast(
; CHECK-NEXT:    [[T0:%.*]] = alloca i16, align 2
; CHECK-NEXT:    call void @escape_alloca(ptr nonnull [[T0]])
; CHECK-NEXT:    [[T1:%.*]] = addrspacecast ptr [[T0]] to ptr addrspace(11)
; CHECK-NEXT:    [[T2:%.*]] = getelementptr inbounds [2 x i8], ptr addrspace(11) [[T1]], i64 0, i64 1
; CHECK-NEXT:    [[T3:%.*]] = load i8, ptr addrspace(11) [[T2]], align 1
; CHECK-NEXT:    [[INSERT:%.*]] = insertvalue { i8, i8 } zeroinitializer, i8 [[T3]], 1
; CHECK-NEXT:    ret { i8, i8 } [[INSERT]]
;
  %t0 = alloca i16, align 2
  call void @escape_alloca(ptr %t0)
  %t1 = addrspacecast ptr %t0 to ptr addrspace(11)
  %t2 = getelementptr [2 x i8], ptr addrspace(11) %t1, i64 0, i64 1
  %t3 = load i8, ptr addrspace(11) %t2, align 1
  %insert = insertvalue { i8, i8 } zeroinitializer, i8 %t3, 1
  ret { i8, i8 } %insert
}


declare spir_func <16 x i32> @my_extern_func()

; check that a bitcast is not generated when we need an addrspace cast
define void @bitcast_after_gep(ptr %t0) {
; CHECK-LABEL: @bitcast_after_gep(
; CHECK-NEXT:    [[T2:%.*]] = addrspacecast ptr [[T0:%.*]] to ptr addrspace(3)
; CHECK-NEXT:    [[CALL:%.*]] = call spir_func <16 x i32> @my_extern_func()
; CHECK-NEXT:    store <16 x i32> [[CALL]], ptr addrspace(3) [[T2]], align 64
; CHECK-NEXT:    ret void
;
  %t2 = addrspacecast ptr %t0 to ptr addrspace(3)
  %call = call spir_func <16 x i32> @my_extern_func()
  store <16 x i32> %call, ptr addrspace(3) %t2
  ret void
}