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; RUN: llc -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
;; The set of valid inputs for get_num_groups depends on the runtime NDRange,
;; but inputs outside of [0, 2] always return 1.
;; Here we assume Itanium mangling for function name.
declare i64 @_Z14get_num_groupsj(i32)
define i64 @foo(i32 %dim) {
%x = call i64 @_Z14get_num_groupsj(i32 0)
%y = call i64 @_Z14get_num_groupsj(i32 5)
%acc = add i64 %x, %y
%unknown = call i64 @_Z14get_num_groupsj(i32 %dim)
%ret = add i64 %acc, %unknown
ret i64 %ret
}
;; Capabilities:
; CHECK-DAG: OpCapability Kernel
; CHECK-DAG: OpCapability Int64
; CHECK-NOT: DAG-FENCE
;; Decorations:
; CHECK-DAG: OpDecorate %[[#GET_NUM_GROUPS:]] BuiltIn NumWorkgroups
; CHECK-DAG: OpDecorate %[[#GET_NUM_GROUPS]] Constant
; CHECK-NOT: DAG-FENCE
;; Types, Constants and Variables:
; CHECK-DAG: %[[#BOOL:]] = OpTypeBool
; CHECK-DAG: %[[#I32:]] = OpTypeInt 32 0
; CHECK-DAG: %[[#I64:]] = OpTypeInt 64 0
; CHECK-DAG: %[[#VEC:]] = OpTypeVector %[[#I64]] 3
; CHECK-DAG: %[[#PTR:]] = OpTypePointer Input %[[#VEC]]
; CHECK-DAG: %[[#FN:]] = OpTypeFunction %[[#I64]] %[[#I32]]
; CHECK-DAG: %[[#GET_NUM_GROUPS]] = OpVariable %[[#PTR]] Input
; CHECK-DAG: %[[#ONE:]] = OpConstant %[[#I64]] 1
; CHECK-DAG: %[[#THREE:]] = OpConstant %[[#I32]] 3
;; Functions:
; CHECK: OpFunction %[[#I64]] None %[[#FN]]
; CHECK: %[[#DIM:]] = OpFunctionParameter %[[#I32]]
;; get_num_groups(0): OpLoad + OpCompositeExtract.
; CHECK: %[[#TMP1:]] = OpLoad %[[#VEC]] %[[#GET_NUM_GROUPS]]
; CHECK: %[[#X:]] = OpCompositeExtract %[[#I64]] %[[#TMP1]] 0
;; get_num_groups(5): OpConstant of one.
; CHECK: OpIAdd %[[#I64]] %[[#X]] %[[#ONE]]
;; get_num_groups(dim): Implementation using OpSelect.
; CHECK-DAG: %[[#TMP2:]] = OpLoad %[[#VEC]] %[[#GET_NUM_GROUPS]]
; CHECK-DAG: %[[#TMP3:]] = OpVectorExtractDynamic %[[#I64]] %[[#TMP2]] %[[#DIM]]
; CHECK-DAG: %[[#COND:]] = OpULessThan %[[#BOOL]] %[[#DIM]] %[[#THREE]]
; CHECK: %[[#UNKNOWN:]] = OpSelect %[[#I64]] %[[#COND]] %[[#TMP3]] %[[#ONE]]
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