1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=instcombine -S | FileCheck %s
4 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"
6 define i16 @test1(i16 %a) {
8 ; CHECK-NEXT: [[C:%.*]] = lshr i16 [[A:%.*]], 8
9 ; CHECK-NEXT: [[D:%.*]] = mul i16 [[A]], 5
10 ; CHECK-NEXT: [[E:%.*]] = or i16 [[C]], [[D]]
11 ; CHECK-NEXT: ret i16 [[E]]
13 %b = zext i16 %a to i32 ; <i32> [#uses=2]
14 %c = lshr i32 %b, 8 ; <i32> [#uses=1]
15 %d = mul i32 %b, 5 ; <i32> [#uses=1]
16 %e = or i32 %c, %d ; <i32> [#uses=1]
17 %f = trunc i32 %e to i16 ; <i16> [#uses=1]
21 define <2 x i16> @test1_vec(<2 x i16> %a) {
22 ; CHECK-LABEL: @test1_vec(
23 ; CHECK-NEXT: [[C:%.*]] = lshr <2 x i16> [[A:%.*]], <i16 8, i16 8>
24 ; CHECK-NEXT: [[D:%.*]] = mul <2 x i16> [[A]], <i16 5, i16 5>
25 ; CHECK-NEXT: [[E:%.*]] = or <2 x i16> [[C]], [[D]]
26 ; CHECK-NEXT: ret <2 x i16> [[E]]
28 %b = zext <2 x i16> %a to <2 x i32>
29 %c = lshr <2 x i32> %b, <i32 8, i32 8>
30 %d = mul <2 x i32> %b, <i32 5, i32 5>
31 %e = or <2 x i32> %c, %d
32 %f = trunc <2 x i32> %e to <2 x i16>
36 define <2 x i16> @test1_vec_nonuniform(<2 x i16> %a) {
37 ; CHECK-LABEL: @test1_vec_nonuniform(
38 ; CHECK-NEXT: [[C:%.*]] = lshr <2 x i16> [[A:%.*]], <i16 8, i16 9>
39 ; CHECK-NEXT: [[D:%.*]] = mul <2 x i16> [[A]], <i16 5, i16 6>
40 ; CHECK-NEXT: [[E:%.*]] = or <2 x i16> [[C]], [[D]]
41 ; CHECK-NEXT: ret <2 x i16> [[E]]
43 %b = zext <2 x i16> %a to <2 x i32>
44 %c = lshr <2 x i32> %b, <i32 8, i32 9>
45 %d = mul <2 x i32> %b, <i32 5, i32 6>
46 %e = or <2 x i32> %c, %d
47 %f = trunc <2 x i32> %e to <2 x i16>
51 define <2 x i16> @test1_vec_undef(<2 x i16> %a) {
52 ; CHECK-LABEL: @test1_vec_undef(
53 ; CHECK-NEXT: [[B:%.*]] = zext <2 x i16> [[A:%.*]] to <2 x i32>
54 ; CHECK-NEXT: [[C:%.*]] = lshr <2 x i32> [[B]], <i32 8, i32 undef>
55 ; CHECK-NEXT: [[D:%.*]] = mul <2 x i32> [[B]], <i32 5, i32 undef>
56 ; CHECK-NEXT: [[E:%.*]] = or <2 x i32> [[C]], [[D]]
57 ; CHECK-NEXT: [[F:%.*]] = trunc <2 x i32> [[E]] to <2 x i16>
58 ; CHECK-NEXT: ret <2 x i16> [[F]]
60 %b = zext <2 x i16> %a to <2 x i32>
61 %c = lshr <2 x i32> %b, <i32 8, i32 undef>
62 %d = mul <2 x i32> %b, <i32 5, i32 undef>
63 %e = or <2 x i32> %c, %d
64 %f = trunc <2 x i32> %e to <2 x i16>