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;=========================== begin_copyright_notice ============================
;
; Copyright (C) 2024 Intel Corporation
;
; SPDX-License-Identifier: MIT
;
;============================ end_copyright_notice =============================
; REQUIRES: llvm-14-plus
;
; RUN: igc_opt -opaque-pointers -igc-legalization -S -dce < %s | FileCheck %s
; ------------------------------------------------
; Legalization: ret
; ------------------------------------------------
; Checks unificataion of multiple ret
; to one unified bb
define void @test_ret_void(i1 %cc, ptr %p1, ptr %p2) {
; CHECK-LABEL: define void @test_ret_void(
; CHECK-SAME: i1 [[CC:%.*]], ptr [[P1:%.*]], ptr [[P2:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br i1 [[CC]], label %[[B1:.*]], label %[[B2:.*]]
; CHECK: [[B1]]:
; CHECK-NEXT: store i32 13, ptr [[P1]], align 4
; CHECK-NEXT: br label %[[UNIFIEDRETURNBLOCK:.*]]
; CHECK: [[B2]]:
; CHECK-NEXT: store i32 144, ptr [[P2]], align 4
; CHECK-NEXT: br label %[[UNIFIEDRETURNBLOCK]]
; CHECK: [[UNIFIEDRETURNBLOCK]]:
; CHECK-NEXT: ret void
;
entry:
br i1 %cc, label %b1, label %b2
b1: ; preds = %entry
store i32 13, ptr %p1, align 4
ret void
b2: ; preds = %entry
store i32 144, ptr %p2, align 4
ret void
}
define i32 @test_ret_i32(i1 %cc, i32 %s1) {
; CHECK-LABEL: define i32 @test_ret_i32(
; CHECK-SAME: i1 [[CC:%.*]], i32 [[S1:%.*]]) {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: br i1 [[CC]], label %[[B1:.*]], label %[[B2:.*]]
; CHECK: [[B1]]:
; CHECK-NEXT: br label %[[UNIFIEDRETURNBLOCK:.*]]
; CHECK: [[B2]]:
; CHECK-NEXT: br label %[[UNIFIEDRETURNBLOCK]]
; CHECK: [[UNIFIEDRETURNBLOCK]]:
; CHECK-NEXT: [[UNIFIEDRETVAL:%.*]] = phi i32 [ [[S1]], %[[B1]] ], [ 144, %[[B2]] ]
; CHECK-NEXT: ret i32 [[UNIFIEDRETVAL]]
;
entry:
br i1 %cc, label %b1, label %b2
b1: ; preds = %entry
ret i32 %s1
b2: ; preds = %entry
ret i32 144
}
!igc.functions = !{!0, !1}
!0 = !{ptr @test_ret_void, !1}
!1 = distinct !{ptr @test_ret_i32, !1}
|
