1 ; RUN: opt < %s -instcombine -S | FileCheck %s
3 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"
4 target triple = "x86_64-apple-darwin10.0.0"
6 ; Bitcasts between vectors and scalars are valid.
8 define i32 @test1(i64 %a) {
9 %t1 = bitcast i64 %a to <2 x i32>
10 %t2 = bitcast i64 %a to <2 x i32>
11 %t3 = xor <2 x i32> %t1, %t2
12 %t4 = extractelement <2 x i32> %t3, i32 0
15 ; CHECK-LABEL: @test1(
19 ; Optimize bitcasts that are extracting low element of vector. This happens
22 define float @test2(<2 x float> %A, <2 x i32> %B) {
23 %tmp28 = bitcast <2 x float> %A to i64 ; <i64> [#uses=2]
24 %tmp23 = trunc i64 %tmp28 to i32 ; <i32> [#uses=1]
25 %tmp24 = bitcast i32 %tmp23 to float ; <float> [#uses=1]
27 %tmp = bitcast <2 x i32> %B to i64
28 %tmp2 = trunc i64 %tmp to i32 ; <i32> [#uses=1]
29 %tmp4 = bitcast i32 %tmp2 to float ; <float> [#uses=1]
31 %add = fadd float %tmp24, %tmp4
34 ; CHECK-LABEL: @test2(
35 ; CHECK-NEXT: %tmp24 = extractelement <2 x float> %A, i32 0
36 ; CHECK-NEXT: bitcast <2 x i32> %B to <2 x float>
37 ; CHECK-NEXT: %tmp4 = extractelement <2 x float> {{.*}}, i32 0
38 ; CHECK-NEXT: %add = fadd float %tmp24, %tmp4
39 ; CHECK-NEXT: ret float %add
42 ; Optimize bitcasts that are extracting other elements of a vector. This
43 ; happens because of SRoA.
45 define float @test3(<2 x float> %A, <2 x i64> %B) {
46 %tmp28 = bitcast <2 x float> %A to i64
47 %tmp29 = lshr i64 %tmp28, 32
48 %tmp23 = trunc i64 %tmp29 to i32
49 %tmp24 = bitcast i32 %tmp23 to float
51 %tmp = bitcast <2 x i64> %B to i128
52 %tmp1 = lshr i128 %tmp, 64
53 %tmp2 = trunc i128 %tmp1 to i32
54 %tmp4 = bitcast i32 %tmp2 to float
56 %add = fadd float %tmp24, %tmp4
59 ; CHECK-LABEL: @test3(
60 ; CHECK-NEXT: %tmp24 = extractelement <2 x float> %A, i32 1
61 ; CHECK-NEXT: bitcast <2 x i64> %B to <4 x float>
62 ; CHECK-NEXT: %tmp4 = extractelement <4 x float> {{.*}}, i32 2
63 ; CHECK-NEXT: %add = fadd float %tmp24, %tmp4
64 ; CHECK-NEXT: ret float %add
67 ; Both bitcasts are unnecessary; change the extractelement.
69 define float @bitcast_extelt1(<2 x float> %A) {
70 %bc1 = bitcast <2 x float> %A to <2 x i32>
71 %ext = extractelement <2 x i32> %bc1, i32 0
72 %bc2 = bitcast i32 %ext to float
75 ; CHECK-LABEL: @bitcast_extelt1(
76 ; CHECK-NEXT: %bc2 = extractelement <2 x float> %A, i32 0
77 ; CHECK-NEXT: ret float %bc2
80 ; Second bitcast can be folded into the first.
82 define i64 @bitcast_extelt2(<4 x float> %A) {
83 %bc1 = bitcast <4 x float> %A to <2 x double>
84 %ext = extractelement <2 x double> %bc1, i32 1
85 %bc2 = bitcast double %ext to i64
88 ; CHECK-LABEL: @bitcast_extelt2(
89 ; CHECK-NEXT: %bc = bitcast <4 x float> %A to <2 x i64>
90 ; CHECK-NEXT: %bc2 = extractelement <2 x i64> %bc, i32 1
91 ; CHECK-NEXT: ret i64 %bc2
94 ; TODO: This should return %A.
96 define <2 x i32> @bitcast_extelt3(<2 x i32> %A) {
97 %bc1 = bitcast <2 x i32> %A to <1 x i64>
98 %ext = extractelement <1 x i64> %bc1, i32 0
99 %bc2 = bitcast i64 %ext to <2 x i32>
102 ; CHECK-LABEL: @bitcast_extelt3(
103 ; CHECK-NEXT: %bc1 = bitcast <2 x i32> %A to <1 x i64>
104 ; CHECK-NEXT: %ext = extractelement <1 x i64> %bc1, i32 0
105 ; CHECK-NEXT: %bc2 = bitcast i64 %ext to <2 x i32>
106 ; CHECK-NEXT: ret <2 x i32> %bc2
109 ; Handle the case where the input is not a vector.
111 define double @bitcast_extelt4(i128 %A) {
112 %bc1 = bitcast i128 %A to <2 x i64>
113 %ext = extractelement <2 x i64> %bc1, i32 0
114 %bc2 = bitcast i64 %ext to double
117 ; CHECK-LABEL: @bitcast_extelt4(
118 ; CHECK-NEXT: %bc = bitcast i128 %A to <2 x double>
119 ; CHECK-NEXT: %bc2 = extractelement <2 x double> %bc, i32 0
120 ; CHECK-NEXT: ret double %bc2
123 define <2 x i32> @test4(i32 %A, i32 %B){
124 %tmp38 = zext i32 %A to i64
125 %tmp32 = zext i32 %B to i64
126 %tmp33 = shl i64 %tmp32, 32
127 %ins35 = or i64 %tmp33, %tmp38
128 %tmp43 = bitcast i64 %ins35 to <2 x i32>
130 ; CHECK-LABEL: @test4(
131 ; CHECK-NEXT: insertelement <2 x i32> undef, i32 %A, i32 0
132 ; CHECK-NEXT: insertelement <2 x i32> {{.*}}, i32 %B, i32 1
133 ; CHECK-NEXT: ret <2 x i32>
138 define <2 x float> @test5(float %A, float %B) {
139 %tmp37 = bitcast float %A to i32
140 %tmp38 = zext i32 %tmp37 to i64
141 %tmp31 = bitcast float %B to i32
142 %tmp32 = zext i32 %tmp31 to i64
143 %tmp33 = shl i64 %tmp32, 32
144 %ins35 = or i64 %tmp33, %tmp38
145 %tmp43 = bitcast i64 %ins35 to <2 x float>
146 ret <2 x float> %tmp43
147 ; CHECK-LABEL: @test5(
148 ; CHECK-NEXT: insertelement <2 x float> undef, float %A, i32 0
149 ; CHECK-NEXT: insertelement <2 x float> {{.*}}, float %B, i32 1
150 ; CHECK-NEXT: ret <2 x float>
153 define <2 x float> @test6(float %A){
154 %tmp23 = bitcast float %A to i32 ; <i32> [#uses=1]
155 %tmp24 = zext i32 %tmp23 to i64 ; <i64> [#uses=1]
156 %tmp25 = shl i64 %tmp24, 32 ; <i64> [#uses=1]
157 %mask20 = or i64 %tmp25, 1109917696 ; <i64> [#uses=1]
158 %tmp35 = bitcast i64 %mask20 to <2 x float> ; <<2 x float>> [#uses=1]
159 ret <2 x float> %tmp35
160 ; CHECK-LABEL: @test6(
161 ; CHECK-NEXT: insertelement <2 x float> <float 4.200000e+01, float undef>, float %A, i32 1
165 define i64 @ISPC0(i64 %in) {
166 %out = and i64 %in, xor (i64 bitcast (<4 x i16> <i16 -1, i16 -1, i16 -1, i16 -1> to i64), i64 -1)
168 ; CHECK-LABEL: @ISPC0(
173 define i64 @Vec2(i64 %in) {
174 %out = and i64 %in, xor (i64 bitcast (<4 x i16> <i16 0, i16 0, i16 0, i16 0> to i64), i64 0)
176 ; CHECK-LABEL: @Vec2(
180 define i64 @All11(i64 %in) {
181 %out = and i64 %in, xor (i64 bitcast (<2 x float> bitcast (i64 -1 to <2 x float>) to i64), i64 -1)
183 ; CHECK-LABEL: @All11(
188 define i32 @All111(i32 %in) {
189 %out = and i32 %in, xor (i32 bitcast (<1 x float> bitcast (i32 -1 to <1 x float>) to i32), i32 -1)
191 ; CHECK-LABEL: @All111(
195 define <2 x i16> @BitcastInsert(i32 %a) {
196 %v = insertelement <1 x i32> undef, i32 %a, i32 0
197 %r = bitcast <1 x i32> %v to <2 x i16>
199 ; CHECK-LABEL: @BitcastInsert(
200 ; CHECK: bitcast i32 %a to <2 x i16>
204 define <2 x i64> @test7(<2 x i8*>* %arg) nounwind {
205 %cast = bitcast <2 x i8*>* %arg to <2 x i64>*
206 %load = load <2 x i64>, <2 x i64>* %cast, align 16