1 ; RUN: opt < %s -instcombine -S | FileCheck %s
3 target datalayout = "e-p:64:64-p1:16:16-p2:32:32:32-p3:64:64:64"
5 %intstruct = type { i32 }
6 %pair = type { i32, i32 }
7 %struct.B = type { double }
8 %struct.A = type { %struct.B, i32, i32 }
9 %struct.C = type { [7 x i8] }
12 @Global = constant [10 x i8] c"helloworld"
13 @Global_as1 = addrspace(1) constant [10 x i8] c"helloworld"
15 ; Test noop elimination
16 define i32* @test1(i32* %I) {
17 %A = getelementptr i32, i32* %I, i64 0
19 ; CHECK-LABEL: @test1(
23 define i32 addrspace(1)* @test1_as1(i32 addrspace(1)* %I) {
24 %A = getelementptr i32, i32 addrspace(1)* %I, i64 0
25 ret i32 addrspace(1)* %A
26 ; CHECK-LABEL: @test1_as1(
27 ; CHECK: ret i32 addrspace(1)* %I
30 ; Test noop elimination
31 define i32* @test2(i32* %I) {
32 %A = getelementptr i32, i32* %I
34 ; CHECK-LABEL: @test2(
38 ; Test that two array indexing geps fold
39 define i32* @test3(i32* %I) {
40 %A = getelementptr i32, i32* %I, i64 17
41 %B = getelementptr i32, i32* %A, i64 4
43 ; CHECK-LABEL: @test3(
44 ; CHECK: getelementptr i32, i32* %I, i64 21
47 ; Test that two getelementptr insts fold
48 define i32* @test4({ i32 }* %I) {
49 %A = getelementptr { i32 }, { i32 }* %I, i64 1
50 %B = getelementptr { i32 }, { i32 }* %A, i64 0, i32 0
52 ; CHECK-LABEL: @test4(
53 ; CHECK: getelementptr { i32 }, { i32 }* %I, i64 1, i32 0
56 define void @test5(i8 %B) {
57 ; This should be turned into a constexpr instead of being an instruction
58 %A = getelementptr [10 x i8], [10 x i8]* @Global, i64 0, i64 4
61 ; CHECK-LABEL: @test5(
62 ; CHECK: store i8 %B, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @Global, i64 0, i64 4)
65 define void @test5_as1(i8 %B) {
66 ; This should be turned into a constexpr instead of being an instruction
67 %A = getelementptr [10 x i8], [10 x i8] addrspace(1)* @Global_as1, i16 0, i16 4
68 store i8 %B, i8 addrspace(1)* %A
70 ; CHECK-LABEL: @test5_as1(
71 ; CHECK: store i8 %B, i8 addrspace(1)* getelementptr inbounds ([10 x i8], [10 x i8] addrspace(1)* @Global_as1, i16 0, i16 4)
74 %as1_ptr_struct = type { i32 addrspace(1)* }
75 %as2_ptr_struct = type { i32 addrspace(2)* }
77 @global_as2 = addrspace(2) global i32 zeroinitializer
78 @global_as1_as2_ptr = addrspace(1) global %as2_ptr_struct { i32 addrspace(2)* @global_as2 }
80 ; This should be turned into a constexpr instead of being an instruction
81 define void @test_evaluate_gep_nested_as_ptrs(i32 addrspace(2)* %B) {
82 ; CHECK-LABEL: @test_evaluate_gep_nested_as_ptrs(
83 ; CHECK-NEXT: store i32 addrspace(2)* %B, i32 addrspace(2)* addrspace(1)* getelementptr inbounds (%as2_ptr_struct, %as2_ptr_struct addrspace(1)* @global_as1_as2_ptr, i16 0, i32 0), align 8
84 ; CHECK-NEXT: ret void
85 %A = getelementptr %as2_ptr_struct, %as2_ptr_struct addrspace(1)* @global_as1_as2_ptr, i16 0, i32 0
86 store i32 addrspace(2)* %B, i32 addrspace(2)* addrspace(1)* %A
90 @arst = addrspace(1) global [4 x i8 addrspace(2)*] zeroinitializer
92 define void @test_evaluate_gep_as_ptrs_array(i8 addrspace(2)* %B) {
93 ; CHECK-LABEL: @test_evaluate_gep_as_ptrs_array(
94 ; CHECK-NEXT: store i8 addrspace(2)* %B, i8 addrspace(2)* addrspace(1)* getelementptr inbounds ([4 x i8 addrspace(2)*], [4 x i8 addrspace(2)*] addrspace(1)* @arst, i16 0, i16 2), align 4
96 ; CHECK-NEXT: ret void
97 %A = getelementptr [4 x i8 addrspace(2)*], [4 x i8 addrspace(2)*] addrspace(1)* @arst, i16 0, i16 2
98 store i8 addrspace(2)* %B, i8 addrspace(2)* addrspace(1)* %A
102 define i32* @test7(i32* %I, i64 %C, i64 %D) {
103 %A = getelementptr i32, i32* %I, i64 %C
104 %B = getelementptr i32, i32* %A, i64 %D
106 ; CHECK-LABEL: @test7(
107 ; CHECK: %A = getelementptr i32, i32* %I, i64 %C
108 ; CHECK: %B = getelementptr i32, i32* %A, i64 %D
111 define i8* @test8([10 x i32]* %X) {
112 ;; Fold into the cast.
113 %A = getelementptr [10 x i32], [10 x i32]* %X, i64 0, i64 0
114 %B = bitcast i32* %A to i8*
116 ; CHECK-LABEL: @test8(
117 ; CHECK: bitcast [10 x i32]* %X to i8*
120 define i32 @test9() {
121 %A = getelementptr { i32, double }, { i32, double }* null, i32 0, i32 1
122 %B = ptrtoint double* %A to i32
124 ; CHECK-LABEL: @test9(
128 define i1 @test10({ i32, i32 }* %x, { i32, i32 }* %y) {
129 %tmp.1 = getelementptr { i32, i32 }, { i32, i32 }* %x, i32 0, i32 1
130 %tmp.3 = getelementptr { i32, i32 }, { i32, i32 }* %y, i32 0, i32 1
132 %tmp.4 = icmp eq i32* %tmp.1, %tmp.3
134 ; CHECK-LABEL: @test10(
135 ; CHECK: icmp eq { i32, i32 }* %x, %y
138 define i1 @test11({ i32, i32 }* %X) {
139 %P = getelementptr { i32, i32 }, { i32, i32 }* %X, i32 0, i32 0
140 %Q = icmp eq i32* %P, null
142 ; CHECK-LABEL: @test11(
143 ; CHECK: icmp eq { i32, i32 }* %X, null
148 define i32 @test12(%struct.A* %a) {
150 %g3 = getelementptr %struct.A, %struct.A* %a, i32 0, i32 1
151 store i32 10, i32* %g3, align 4
153 %g4 = getelementptr %struct.A, %struct.A* %a, i32 0, i32 0
155 %new_a = bitcast %struct.B* %g4 to %struct.A*
157 %g5 = getelementptr %struct.A, %struct.A* %new_a, i32 0, i32 1
158 %a_a = load i32, i32* %g5, align 4
160 ; CHECK-LABEL: @test12(
161 ; CHECK: getelementptr %struct.A, %struct.A* %a, i64 0, i32 1
162 ; CHECK-NEXT: store i32 10, i32* %g3
163 ; CHECK-NEXT: ret i32 10
168 %S = type { i32, [ 100 x i32] }
169 define i1 @test13(i64 %X, %S* %P) {
170 %A = getelementptr inbounds %S, %S* %P, i32 0, i32 1, i64 %X
171 %B = getelementptr inbounds %S, %S* %P, i32 0, i32 0
172 %C = icmp eq i32* %A, %B
174 ; CHECK-LABEL: @test13(
175 ; CHECK: %C = icmp eq i64 %X, -1
178 define <2 x i1> @test13_vector(<2 x i64> %X, <2 x %S*> %P) nounwind {
179 ; CHECK-LABEL: @test13_vector(
180 ; CHECK-NEXT: shl nuw <2 x i64> %X, <i64 2, i64 2>
181 ; CHECK-NEXT: add <2 x i64> %A.idx, <i64 4, i64 4>
182 ; CHECK-NEXT: icmp eq <2 x i64> %A.offs, zeroinitializer
183 %A = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> zeroinitializer, <2 x i32> <i32 1, i32 1>, <2 x i64> %X
184 %B = getelementptr inbounds %S, <2 x %S*> %P, <2 x i64> <i64 0, i64 0>, <2 x i32> <i32 0, i32 0>
185 %C = icmp eq <2 x i32*> %A, %B
189 define i1 @test13_as1(i16 %X, %S addrspace(1)* %P) {
190 ; CHECK-LABEL: @test13_as1(
191 ; CHECK-NEXT: %C = icmp eq i16 %X, -1
192 ; CHECK-NEXT: ret i1 %C
193 %A = getelementptr inbounds %S, %S addrspace(1)* %P, i16 0, i32 1, i16 %X
194 %B = getelementptr inbounds %S, %S addrspace(1)* %P, i16 0, i32 0
195 %C = icmp eq i32 addrspace(1)* %A, %B
199 define <2 x i1> @test13_vector_as1(<2 x i16> %X, <2 x %S addrspace(1)*> %P) {
200 ; CHECK-LABEL: @test13_vector_as1(
201 ; CHECK-NEXT: shl nuw <2 x i16> %X, <i16 2, i16 2>
202 ; CHECK-NEXT: add <2 x i16> %A.idx, <i16 4, i16 4>
203 ; CHECK-NEXT: icmp eq <2 x i16> %A.offs, zeroinitializer
204 ; CHECK-NEXT: ret <2 x i1>
205 %A = getelementptr inbounds %S, <2 x %S addrspace(1)*> %P, <2 x i16> <i16 0, i16 0>, <2 x i32> <i32 1, i32 1>, <2 x i16> %X
206 %B = getelementptr inbounds %S, <2 x %S addrspace(1)*> %P, <2 x i16> <i16 0, i16 0>, <2 x i32> <i32 0, i32 0>
207 %C = icmp eq <2 x i32 addrspace(1)*> %A, %B
211 define i1 @test13_i32(i32 %X, %S* %P) {
212 ; CHECK-LABEL: @test13_i32(
213 ; CHECK: %C = icmp eq i32 %X, -1
214 %A = getelementptr inbounds %S, %S* %P, i32 0, i32 1, i32 %X
215 %B = getelementptr inbounds %S, %S* %P, i32 0, i32 0
216 %C = icmp eq i32* %A, %B
220 define i1 @test13_i16(i16 %X, %S* %P) {
221 ; CHECK-LABEL: @test13_i16(
222 ; CHECK: %C = icmp eq i16 %X, -1
223 %A = getelementptr inbounds %S, %S* %P, i16 0, i32 1, i16 %X
224 %B = getelementptr inbounds %S, %S* %P, i16 0, i32 0
225 %C = icmp eq i32* %A, %B
229 define i1 @test13_i128(i128 %X, %S* %P) {
230 ; CHECK-LABEL: @test13_i128(
231 ; CHECK: %C = icmp eq i64 %1, -1
232 %A = getelementptr inbounds %S, %S* %P, i128 0, i32 1, i128 %X
233 %B = getelementptr inbounds %S, %S* %P, i128 0, i32 0
234 %C = icmp eq i32* %A, %B
239 @G = external global [3 x i8]
240 define i8* @test14(i32 %Idx) {
241 %idx = zext i32 %Idx to i64
242 %tmp = getelementptr i8, i8* getelementptr ([3 x i8], [3 x i8]* @G, i32 0, i32 0), i64 %idx
244 ; CHECK-LABEL: @test14(
245 ; CHECK: getelementptr [3 x i8], [3 x i8]* @G, i64 0, i64 %idx
249 ; Test folding of constantexpr geps into normal geps.
250 @Array = external global [40 x i32]
251 define i32 *@test15(i64 %X) {
252 %A = getelementptr i32, i32* getelementptr ([40 x i32], [40 x i32]* @Array, i64 0, i64 0), i64 %X
254 ; CHECK-LABEL: @test15(
255 ; CHECK: getelementptr [40 x i32], [40 x i32]* @Array, i64 0, i64 %X
259 define i32* @test16(i32* %X, i32 %Idx) {
260 %R = getelementptr i32, i32* %X, i32 %Idx
262 ; CHECK-LABEL: @test16(
263 ; CHECK: sext i32 %Idx to i64
267 define i1 @test17(i16* %P, i32 %I, i32 %J) {
268 %X = getelementptr inbounds i16, i16* %P, i32 %I
269 %Y = getelementptr inbounds i16, i16* %P, i32 %J
270 %C = icmp ult i16* %X, %Y
272 ; CHECK-LABEL: @test17(
273 ; CHECK: %C = icmp slt i32 %I, %J
276 define i1 @test18(i16* %P, i32 %I) {
277 %X = getelementptr inbounds i16, i16* %P, i32 %I
278 %C = icmp ult i16* %X, %P
280 ; CHECK-LABEL: @test18(
281 ; CHECK: %C = icmp slt i32 %I, 0
284 ; Larger than the pointer size for a non-zero address space
285 define i1 @test18_as1(i16 addrspace(1)* %P, i32 %I) {
286 ; CHECK-LABEL: @test18_as1(
287 ; CHECK-NEXT: %1 = trunc i32 %I to i16
288 ; CHECK-NEXT: %C = icmp slt i16 %1, 0
289 ; CHECK-NEXT: ret i1 %C
290 %X = getelementptr inbounds i16, i16 addrspace(1)* %P, i32 %I
291 %C = icmp ult i16 addrspace(1)* %X, %P
295 ; Smaller than the pointer size for a non-zero address space
296 define i1 @test18_as1_i32(i16 addrspace(1)* %P, i32 %I) {
297 ; CHECK-LABEL: @test18_as1_i32(
298 ; CHECK-NEXT: %1 = trunc i32 %I to i16
299 ; CHECK-NEXT: %C = icmp slt i16 %1, 0
300 ; CHECK-NEXT: ret i1 %C
301 %X = getelementptr inbounds i16, i16 addrspace(1)* %P, i32 %I
302 %C = icmp ult i16 addrspace(1)* %X, %P
306 ; Smaller than pointer size
307 define i1 @test18_i16(i16* %P, i16 %I) {
308 ; CHECK-LABEL: @test18_i16(
309 ; CHECK: %C = icmp slt i16 %I, 0
310 %X = getelementptr inbounds i16, i16* %P, i16 %I
311 %C = icmp ult i16* %X, %P
315 ; Same as pointer size
316 define i1 @test18_i64(i16* %P, i64 %I) {
317 ; CHECK-LABEL: @test18_i64(
318 ; CHECK: %C = icmp slt i64 %I, 0
319 %X = getelementptr inbounds i16, i16* %P, i64 %I
320 %C = icmp ult i16* %X, %P
324 ; Larger than the pointer size
325 define i1 @test18_i128(i16* %P, i128 %I) {
326 ; CHECK-LABEL: @test18_i128(
327 ; CHECK: %C = icmp slt i64 %1, 0
328 %X = getelementptr inbounds i16, i16* %P, i128 %I
329 %C = icmp ult i16* %X, %P
333 define i32 @test19(i32* %P, i32 %A, i32 %B) {
334 %tmp.4 = getelementptr inbounds i32, i32* %P, i32 %A
335 %tmp.9 = getelementptr inbounds i32, i32* %P, i32 %B
336 %tmp.10 = icmp eq i32* %tmp.4, %tmp.9
337 %tmp.11 = zext i1 %tmp.10 to i32
339 ; CHECK-LABEL: @test19(
340 ; CHECK: icmp eq i32 %A, %B
343 define i32 @test20(i32* %P, i32 %A, i32 %B) {
344 %tmp.4 = getelementptr inbounds i32, i32* %P, i32 %A
345 %tmp.6 = icmp eq i32* %tmp.4, %P
346 %tmp.7 = zext i1 %tmp.6 to i32
348 ; CHECK-LABEL: @test20(
349 ; CHECK: icmp eq i32 %A, 0
352 define i32 @test20_as1(i32 addrspace(1)* %P, i32 %A, i32 %B) {
353 %tmp.4 = getelementptr inbounds i32, i32 addrspace(1)* %P, i32 %A
354 %tmp.6 = icmp eq i32 addrspace(1)* %tmp.4, %P
355 %tmp.7 = zext i1 %tmp.6 to i32
357 ; CHECK-LABEL: @test20_as1(
358 ; CHECK: icmp eq i16 %1, 0
362 define i32 @test21() {
363 %pbob1 = alloca %intstruct
364 %pbob2 = getelementptr %intstruct, %intstruct* %pbob1
365 %pbobel = getelementptr %intstruct, %intstruct* %pbob2, i64 0, i32 0
366 %rval = load i32, i32* %pbobel
368 ; CHECK-LABEL: @test21(
369 ; CHECK: getelementptr %intstruct, %intstruct* %pbob1, i64 0, i32 0
373 @A = global i32 1 ; <i32*> [#uses=1]
374 @B = global i32 2 ; <i32*> [#uses=1]
376 define i1 @test22() {
377 %C = icmp ult i32* getelementptr (i32, i32* @A, i64 1),
378 getelementptr (i32, i32* @B, i64 2)
380 ; CHECK-LABEL: @test22(
381 ; CHECK: icmp ult (i32* getelementptr inbounds (i32, i32* @A, i64 1), i32* getelementptr (i32, i32* @B, i64 2))
385 %X = type { [10 x i32], float }
387 define i1 @test23() {
388 %A = getelementptr %X, %X* null, i64 0, i32 0, i64 0 ; <i32*> [#uses=1]
389 %B = icmp ne i32* %A, null ; <i1> [#uses=1]
391 ; CHECK-LABEL: @test23(
392 ; CHECK: ret i1 false
395 define void @test25() {
397 %tmp = getelementptr { i64, i64, i64, i64 }, { i64, i64, i64, i64 }* null, i32 0, i32 3 ; <i64*> [#uses=1]
398 %tmp.upgrd.1 = load i64, i64* %tmp ; <i64> [#uses=1]
399 %tmp8.ui = load i64, i64* null ; <i64> [#uses=1]
400 %tmp8 = bitcast i64 %tmp8.ui to i64 ; <i64> [#uses=1]
401 %tmp9 = and i64 %tmp8, %tmp.upgrd.1 ; <i64> [#uses=1]
402 %sext = trunc i64 %tmp9 to i32 ; <i32> [#uses=1]
403 %tmp27.i = sext i32 %sext to i64 ; <i64> [#uses=1]
404 tail call void @foo25( i32 0, i64 %tmp27.i )
406 ; CHECK-LABEL: @test25(
409 declare void @foo25(i32, i64)
413 define i1 @test26(i8* %arr) {
414 %X = getelementptr i8, i8* %arr, i32 1
415 %Y = getelementptr i8, i8* %arr, i32 1
416 %test = icmp uge i8* %X, %Y
418 ; CHECK-LABEL: @test26(
422 %struct.__large_struct = type { [100 x i64] }
423 %struct.compat_siginfo = type { i32, i32, i32, { [29 x i32] } }
424 %struct.siginfo_t = type { i32, i32, i32, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] } }
425 %struct.sigval_t = type { i8* }
427 define i32 @test27(%struct.compat_siginfo* %to, %struct.siginfo_t* %from) {
429 %from_addr = alloca %struct.siginfo_t*
430 %tmp344 = load %struct.siginfo_t*, %struct.siginfo_t** %from_addr, align 8
431 %tmp345 = getelementptr %struct.siginfo_t, %struct.siginfo_t* %tmp344, i32 0, i32 3
432 %tmp346 = getelementptr { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }, { { i32, i32, [0 x i8], %struct.sigval_t, i32 }, [88 x i8] }* %tmp345, i32 0, i32 0
433 %tmp346347 = bitcast { i32, i32, [0 x i8], %struct.sigval_t, i32 }* %tmp346 to { i32, i32, %struct.sigval_t }*
434 %tmp348 = getelementptr { i32, i32, %struct.sigval_t }, { i32, i32, %struct.sigval_t }* %tmp346347, i32 0, i32 2
435 %tmp349 = getelementptr %struct.sigval_t, %struct.sigval_t* %tmp348, i32 0, i32 0
436 %tmp349350 = bitcast i8** %tmp349 to i32*
437 %tmp351 = load i32, i32* %tmp349350, align 8
438 %tmp360 = call i32 asm sideeffect "...",
439 "=r,ir,*m,i,0,~{dirflag},~{fpsr},~{flags}"( i32 %tmp351,
440 %struct.__large_struct* null, i32 -14, i32 0 )
442 ; CHECK-LABEL: @test27(
446 %struct.x = type <{ i8 }>
447 @.str = internal constant [6 x i8] c"Main!\00"
448 @.str1 = internal constant [12 x i8] c"destroy %p\0A\00"
450 define i32 @test28() nounwind {
452 %orientations = alloca [1 x [1 x %struct.x]]
453 %tmp3 = call i32 @puts( i8* getelementptr ([6 x i8], [6 x i8]* @.str, i32 0, i32 0) ) nounwind
454 %tmp45 = getelementptr inbounds [1 x [1 x %struct.x]], [1 x [1 x %struct.x]]* %orientations, i32 1, i32 0, i32 0
455 %orientations62 = getelementptr [1 x [1 x %struct.x]], [1 x [1 x %struct.x]]* %orientations, i32 0, i32 0, i32 0
459 %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb10 ]
460 %tmp.0.reg2mem.0.rec = mul i32 %indvar, -1
461 %tmp12.rec = add i32 %tmp.0.reg2mem.0.rec, -1
462 %tmp12 = getelementptr inbounds %struct.x, %struct.x* %tmp45, i32 %tmp12.rec
463 %tmp16 = call i32 (i8*, ...) @printf( i8* getelementptr ([12 x i8], [12 x i8]* @.str1, i32 0, i32 0), %struct.x* %tmp12 ) nounwind
464 %tmp84 = icmp eq %struct.x* %tmp12, %orientations62
465 %indvar.next = add i32 %indvar, 1
466 br i1 %tmp84, label %bb17, label %bb10
470 ; CHECK-LABEL: @test28(
471 ; CHECK: icmp eq i32 %indvar, 0
474 declare i32 @puts(i8*)
476 declare i32 @printf(i8*, ...)
482 %T = type <{ i64, i64, i64 }>
483 define i32 @test29(i8* %start, i32 %X) nounwind {
485 %tmp3 = load i64, i64* null
486 %add.ptr = getelementptr i8, i8* %start, i64 %tmp3
487 %tmp158 = load i32, i32* null
488 %add.ptr159 = getelementptr %T, %T* null, i32 %tmp158
489 %add.ptr209 = getelementptr i8, i8* %start, i64 0
490 %add.ptr212 = getelementptr i8, i8* %add.ptr209, i32 %X
491 %cmp214 = icmp ugt i8* %add.ptr212, %add.ptr
492 br i1 %cmp214, label %if.then216, label %if.end363
499 ; CHECK-LABEL: @test29(
504 define i32 @test30(i32 %m, i32 %n) nounwind {
506 %0 = alloca i32, i32 %n, align 4
507 %1 = bitcast i32* %0 to [0 x i32]*
508 call void @test30f(i32* %0) nounwind
509 %2 = getelementptr [0 x i32], [0 x i32]* %1, i32 0, i32 %m
510 %3 = load i32, i32* %2, align 4
512 ; CHECK-LABEL: @test30(
513 ; CHECK: getelementptr i32
516 declare void @test30f(i32*)
520 define i1 @test31(i32* %A) {
521 %B = getelementptr i32, i32* %A, i32 1
522 %C = getelementptr i32, i32* %A, i64 1
523 %V = icmp eq i32* %B, %C
525 ; CHECK-LABEL: @test31(
531 define i8* @test32(i8* %v) {
532 %A = alloca [4 x i8*], align 16
533 %B = getelementptr [4 x i8*], [4 x i8*]* %A, i32 0, i32 0
534 store i8* null, i8** %B
535 %C = bitcast [4 x i8*]* %A to { [16 x i8] }*
536 %D = getelementptr { [16 x i8] }, { [16 x i8] }* %C, i32 0, i32 0, i32 8
537 %E = bitcast i8* %D to i8**
538 store i8* %v, i8** %E
539 %F = getelementptr [4 x i8*], [4 x i8*]* %A, i32 0, i32 2
540 %G = load i8*, i8** %F
542 ; CHECK-LABEL: @test32(
543 ; CHECK: %D = getelementptr [4 x i8*], [4 x i8*]* %A, i64 0, i64 1
544 ; CHECK: %F = getelementptr [4 x i8*], [4 x i8*]* %A, i64 0, i64 2
548 %struct.Key = type { { i32, i32 } }
549 %struct.anon = type <{ i8, [3 x i8], i32 }>
551 define i32* @test33(%struct.Key* %A) {
552 ; CHECK-LABEL: @test33(
553 ; CHECK: getelementptr %struct.Key, %struct.Key* %A, i64 0, i32 0, i32 1
554 %B = bitcast %struct.Key* %A to %struct.anon*
555 %C = getelementptr %struct.anon, %struct.anon* %B, i32 0, i32 2
559 define i32 addrspace(1)* @test33_as1(%struct.Key addrspace(1)* %A) {
560 ; CHECK-LABEL: @test33_as1(
561 ; CHECK: getelementptr %struct.Key, %struct.Key addrspace(1)* %A, i16 0, i32 0, i32 1
562 %B = bitcast %struct.Key addrspace(1)* %A to %struct.anon addrspace(1)*
563 %C = getelementptr %struct.anon, %struct.anon addrspace(1)* %B, i32 0, i32 2
564 ret i32 addrspace(1)* %C
567 define i32 addrspace(1)* @test33_array_as1([10 x i32] addrspace(1)* %A) {
568 ; CHECK-LABEL: @test33_array_as1(
569 ; CHECK: getelementptr [10 x i32], [10 x i32] addrspace(1)* %A, i16 0, i16 2
570 %B = bitcast [10 x i32] addrspace(1)* %A to [5 x i32] addrspace(1)*
571 %C = getelementptr [5 x i32], [5 x i32] addrspace(1)* %B, i32 0, i32 2
572 ret i32 addrspace(1)* %C
575 ; Make sure the GEP indices use the right pointer sized integer
576 define i32 addrspace(1)* @test33_array_struct_as1([10 x %struct.Key] addrspace(1)* %A) {
577 ; CHECK-LABEL: @test33_array_struct_as1(
578 ; CHECK: getelementptr [10 x %struct.Key], [10 x %struct.Key] addrspace(1)* %A, i16 0, i16 1, i32 0, i32 0
579 %B = bitcast [10 x %struct.Key] addrspace(1)* %A to [20 x i32] addrspace(1)*
580 %C = getelementptr [20 x i32], [20 x i32] addrspace(1)* %B, i32 0, i32 2
581 ret i32 addrspace(1)* %C
584 define i32 addrspace(1)* @test33_addrspacecast(%struct.Key* %A) {
585 ; CHECK-LABEL: @test33_addrspacecast(
586 ; CHECK: %C = getelementptr %struct.Key, %struct.Key* %A, i64 0, i32 0, i32 1
587 ; CHECK-NEXT: addrspacecast i32* %C to i32 addrspace(1)*
589 %B = addrspacecast %struct.Key* %A to %struct.anon addrspace(1)*
590 %C = getelementptr %struct.anon, %struct.anon addrspace(1)* %B, i32 0, i32 2
591 ret i32 addrspace(1)* %C
594 %T2 = type { i8*, i8 }
595 define i8* @test34(i8* %Val, i64 %V) nounwind {
597 %A = alloca %T2, align 8
598 %mrv_gep = bitcast %T2* %A to i64*
599 %B = getelementptr %T2, %T2* %A, i64 0, i32 0
601 store i64 %V, i64* %mrv_gep
602 %C = load i8*, i8** %B, align 8
604 ; CHECK-LABEL: @test34(
605 ; CHECK: %[[C:.*]] = inttoptr i64 %V to i8*
606 ; CHECK: ret i8* %[[C]]
609 %t0 = type { i8*, [19 x i8] }
610 %t1 = type { i8*, [0 x i8] }
612 @array = external global [11 x i8]
614 @s = external global %t0
615 @"\01LC8" = external constant [17 x i8]
617 ; Instcombine should be able to fold this getelementptr.
619 define i32 @test35() nounwind {
620 call i32 (i8*, ...) @printf(i8* getelementptr ([17 x i8], [17 x i8]* @"\01LC8", i32 0, i32 0),
621 i8* getelementptr (%t1, %t1* bitcast (%t0* @s to %t1*), i32 0, i32 1, i32 0)) nounwind
623 ; CHECK-LABEL: @test35(
624 ; CHECK: call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @"\01LC8", i64 0, i64 0), i8* getelementptr inbounds (%t0, %t0* @s, i64 0, i32 1, i64 0)) [[NUW:#[0-9]+]]
627 ; Instcombine should constant-fold the GEP so that indices that have
628 ; static array extents are within bounds of those array extents.
629 ; In the below, -1 is not in the range [0,11). After the transformation,
630 ; the same address is computed, but 3 is in the range of [0,11).
632 define i8* @test36() nounwind {
633 ret i8* getelementptr ([11 x i8], [11 x i8]* @array, i32 0, i64 -1)
634 ; CHECK-LABEL: @test36(
635 ; CHECK: ret i8* getelementptr ([11 x i8], [11 x i8]* @array, i64 1676976733973595601, i64 4)
638 ; Instcombine shouldn't assume that gep(A,0,1) != gep(A,1,0).
639 @A37 = external constant [1 x i8]
640 define i1 @test37() nounwind {
641 ; CHECK-LABEL: @test37(
643 %t = icmp eq i8* getelementptr ([1 x i8], [1 x i8]* @A37, i64 0, i64 1),
644 getelementptr ([1 x i8], [1 x i8]* @A37, i64 1, i64 0)
648 ; Test index promotion
649 define i32* @test38(i32* %I, i32 %n) {
650 %A = getelementptr i32, i32* %I, i32 %n
652 ; CHECK-LABEL: @test38(
653 ; CHECK: = sext i32 %n to i64
654 ; CHECK: %A = getelementptr i32, i32* %I, i64 %
657 ; Test that we don't duplicate work when the second gep is a "bitcast".
658 %pr10322_t = type { i8* }
659 declare void @pr10322_f2(%pr10322_t*)
660 declare void @pr10322_f3(i8**)
661 define void @pr10322_f1(%pr10322_t* %foo) {
663 %arrayidx8 = getelementptr inbounds %pr10322_t, %pr10322_t* %foo, i64 2
664 call void @pr10322_f2(%pr10322_t* %arrayidx8) nounwind
665 %tmp2 = getelementptr inbounds %pr10322_t, %pr10322_t* %arrayidx8, i64 0, i32 0
666 call void @pr10322_f3(i8** %tmp2) nounwind
669 ; CHECK-LABEL: @pr10322_f1(
670 ; CHECK: %tmp2 = getelementptr inbounds %pr10322_t, %pr10322_t* %arrayidx8, i64 0, i32 0
673 ; Test that we combine the last two geps in this sequence, before we
674 ; would wait for gep1 and gep2 to be combined and never combine 2 and 3.
675 %three_gep_t = type {i32}
676 %three_gep_t2 = type {%three_gep_t}
678 define void @three_gep_f(%three_gep_t2* %x) {
679 %gep1 = getelementptr %three_gep_t2, %three_gep_t2* %x, i64 2
680 call void @three_gep_h(%three_gep_t2* %gep1)
681 %gep2 = getelementptr %three_gep_t2, %three_gep_t2* %gep1, i64 0, i32 0
682 %gep3 = getelementptr %three_gep_t, %three_gep_t* %gep2, i64 0, i32 0
683 call void @three_gep_g(i32* %gep3)
685 ; CHECK-LABEL: @three_gep_f(
686 ; CHECK: %gep3 = getelementptr %three_gep_t2, %three_gep_t2* %gep1, i64 0, i32 0, i32 0
690 declare void @three_gep_g(i32*)
691 declare void @three_gep_h(%three_gep_t2*)
693 %struct.ham = type { i32, %struct.zot*, %struct.zot*, %struct.zot* }
694 %struct.zot = type { i64, i8 }
696 define void @test39(%struct.ham* %arg, i8 %arg1) nounwind {
697 %tmp = getelementptr inbounds %struct.ham, %struct.ham* %arg, i64 0, i32 2
698 %tmp2 = load %struct.zot*, %struct.zot** %tmp, align 8
699 %tmp3 = bitcast %struct.zot* %tmp2 to i8*
700 %tmp4 = getelementptr inbounds i8, i8* %tmp3, i64 -8
701 store i8 %arg1, i8* %tmp4, align 8
704 ; CHECK-LABEL: @test39(
705 ; CHECK: getelementptr inbounds %struct.ham, %struct.ham* %arg, i64 0, i32 2
706 ; CHECK: getelementptr inbounds i8, i8* %{{.+}}, i64 -8
709 define i1 @pr16483([1 x i8]* %a, [1 x i8]* %b) {
710 %c = getelementptr [1 x i8], [1 x i8]* %a, i32 0, i32 0
711 %d = getelementptr [1 x i8], [1 x i8]* %b, i32 0, i32 0
712 %cmp = icmp ult i8* %c, %d
715 ; CHECK-LABEL: @pr16483(
716 ; CHECK-NEXT: icmp ult [1 x i8]* %a, %b
719 define i8 @test_gep_bitcast_as1(i32 addrspace(1)* %arr, i16 %N) {
720 ; CHECK-LABEL: @test_gep_bitcast_as1(
721 ; CHECK: getelementptr i32, i32 addrspace(1)* %arr, i16 %N
723 %cast = bitcast i32 addrspace(1)* %arr to i8 addrspace(1)*
725 %t = getelementptr i8, i8 addrspace(1)* %cast, i16 %V
726 %x = load i8, i8 addrspace(1)* %t
730 ; The element size of the array matches the element size of the pointer
731 define i64 @test_gep_bitcast_array_same_size_element([100 x double]* %arr, i64 %N) {
732 ; CHECK-LABEL: @test_gep_bitcast_array_same_size_element(
733 ; CHECK: getelementptr [100 x double], [100 x double]* %arr, i64 0, i64 %V
735 %cast = bitcast [100 x double]* %arr to i64*
737 %t = getelementptr i64, i64* %cast, i64 %V
738 %x = load i64, i64* %t
742 ; gep should be done in the original address space.
743 define i64 @test_gep_bitcast_array_same_size_element_addrspacecast([100 x double]* %arr, i64 %N) {
744 ; CHECK-LABEL: @test_gep_bitcast_array_same_size_element_addrspacecast(
745 ; CHECK: getelementptr [100 x double], [100 x double]* %arr, i64 0, i64 %V
746 ; CHECK-NEXT: bitcast double*
747 ; CHECK-NEXT: %t = addrspacecast i64*
748 ; CHECK: load i64, i64 addrspace(3)* %t
749 %cast = addrspacecast [100 x double]* %arr to i64 addrspace(3)*
751 %t = getelementptr i64, i64 addrspace(3)* %cast, i64 %V
752 %x = load i64, i64 addrspace(3)* %t
756 ; The element size of the array is different the element size of the pointer
757 define i8 @test_gep_bitcast_array_different_size_element([100 x double]* %arr, i64 %N) {
758 ; CHECK-LABEL: @test_gep_bitcast_array_different_size_element(
759 ; CHECK: getelementptr [100 x double], [100 x double]* %arr, i64 0, i64 %N
761 %cast = bitcast [100 x double]* %arr to i8*
763 %t = getelementptr i8, i8* %cast, i64 %V
768 define i64 @test_gep_bitcast_array_same_size_element_as1([100 x double] addrspace(1)* %arr, i16 %N) {
769 ; CHECK-LABEL: @test_gep_bitcast_array_same_size_element_as1(
770 ; CHECK: getelementptr [100 x double], [100 x double] addrspace(1)* %arr, i16 0, i16 %V
772 %cast = bitcast [100 x double] addrspace(1)* %arr to i64 addrspace(1)*
774 %t = getelementptr i64, i64 addrspace(1)* %cast, i16 %V
775 %x = load i64, i64 addrspace(1)* %t
779 define i8 @test_gep_bitcast_array_different_size_element_as1([100 x double] addrspace(1)* %arr, i16 %N) {
780 ; CHECK-LABEL: @test_gep_bitcast_array_different_size_element_as1(
781 ; CHECK: getelementptr [100 x double], [100 x double] addrspace(1)* %arr, i16 0, i16 %N
783 %cast = bitcast [100 x double] addrspace(1)* %arr to i8 addrspace(1)*
785 %t = getelementptr i8, i8 addrspace(1)* %cast, i16 %V
786 %x = load i8, i8 addrspace(1)* %t
790 define i64 @test40() {
791 %array = alloca [3 x i32], align 4
792 %gep = getelementptr inbounds [3 x i32], [3 x i32]* %array, i64 0, i64 2
793 %gepi8 = bitcast i32* %gep to i8*
794 %p = ptrtoint [3 x i32]* %array to i64
796 %gep2 = getelementptr i8, i8* %gepi8, i64 %np
797 %ret = ptrtoint i8* %gep2 to i64
800 ; CHECK-LABEL: @test40
801 ; CHECK-NEXT: ret i64 8
804 define i16 @test41([3 x i32] addrspace(1)* %array) {
805 %gep = getelementptr inbounds [3 x i32], [3 x i32] addrspace(1)* %array, i16 0, i16 2
806 %gepi8 = bitcast i32 addrspace(1)* %gep to i8 addrspace(1)*
807 %p = ptrtoint [3 x i32] addrspace(1)* %array to i16
809 %gep2 = getelementptr i8, i8 addrspace(1)* %gepi8, i16 %np
810 %ret = ptrtoint i8 addrspace(1)* %gep2 to i16
813 ; CHECK-LABEL: @test41(
814 ; CHECK-NEXT: ret i16 8
817 define i8* @test42(i8* %c1, i8* %c2) {
818 %ptrtoint = ptrtoint i8* %c1 to i64
819 %sub = sub i64 0, %ptrtoint
820 %gep = getelementptr inbounds i8, i8* %c2, i64 %sub
823 ; CHECK-LABEL: @test42(
824 ; CHECK-NEXT: [[PTRTOINT1:%.*]] = ptrtoint i8* %c1 to i64
825 ; CHECK-NEXT: [[PTRTOINT2:%.*]] = ptrtoint i8* %c2 to i64
826 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[PTRTOINT2]], [[PTRTOINT1]]
827 ; CHECK-NEXT: [[INTTOPTR:%.*]] = inttoptr i64 [[SUB]] to i8*
828 ; CHECK-NEXT: ret i8* [[INTTOPTR]]
831 define i16* @test43(i16* %c1, i16* %c2) {
832 %ptrtoint = ptrtoint i16* %c1 to i64
833 %sub = sub i64 0, %ptrtoint
834 %shr = ashr i64 %sub, 1
835 %gep = getelementptr inbounds i16, i16* %c2, i64 %shr
838 ; CHECK-LABEL: @test43(
839 ; CHECK-NEXT: [[PTRTOINT1:%.*]] = ptrtoint i16* %c1 to i64
840 ; CHECK-NEXT: [[PTRTOINT2:%.*]] = ptrtoint i16* %c2 to i64
841 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[PTRTOINT2]], [[PTRTOINT1]]
842 ; CHECK-NEXT: [[INTTOPTR:%.*]] = inttoptr i64 [[SUB]] to i16*
843 ; CHECK-NEXT: ret i16* [[INTTOPTR]]
846 define %struct.C* @test44(%struct.C* %c1, %struct.C* %c2) {
847 %ptrtoint = ptrtoint %struct.C* %c1 to i64
848 %sub = sub i64 0, %ptrtoint
849 %shr = sdiv i64 %sub, 7
850 %gep = getelementptr inbounds %struct.C, %struct.C* %c2, i64 %shr
853 ; CHECK-LABEL: @test44(
854 ; CHECK-NEXT: [[PTRTOINT1:%.*]] = ptrtoint %struct.C* %c1 to i64
855 ; CHECK-NEXT: [[PTRTOINT2:%.*]] = ptrtoint %struct.C* %c2 to i64
856 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 [[PTRTOINT2]], [[PTRTOINT1]]
857 ; CHECK-NEXT: [[INTTOPTR:%.*]] = inttoptr i64 [[SUB]] to %struct.C*
858 ; CHECK-NEXT: ret %struct.C* [[INTTOPTR]]
861 define %struct.C* @test45(%struct.C* %c1, %struct.C** %c2) {
862 %ptrtoint1 = ptrtoint %struct.C* %c1 to i64
863 %ptrtoint2 = ptrtoint %struct.C** %c2 to i64
864 %sub = sub i64 %ptrtoint2, %ptrtoint1 ; C2 - C1
865 %shr = sdiv i64 %sub, 7
866 %gep = getelementptr inbounds %struct.C, %struct.C* %c1, i64 %shr ; C1 + (C2 - C1)
869 ; CHECK-LABEL: @test45(
870 ; CHECK-NEXT: [[BITCAST:%.*]] = bitcast %struct.C** %c2 to %struct.C*
871 ; CHECK-NEXT: ret %struct.C* [[BITCAST]]
874 define %struct.C* @test46(%struct.C* %c1, %struct.C* %c2, i64 %N) {
875 %ptrtoint = ptrtoint %struct.C* %c1 to i64
876 %sub = sub i64 0, %ptrtoint
877 %sdiv = sdiv i64 %sub, %N
878 %gep = getelementptr inbounds %struct.C, %struct.C* %c2, i64 %sdiv
881 ; CHECK-LABEL: @test46(
882 ; CHECK-NEXT: [[PTRTOINT:%.*]] = ptrtoint %struct.C* %c1 to i64
883 ; CHECK-NEXT: [[SUB:%.*]] = sub i64 0, [[PTRTOINT]]
884 ; CHECK-NEXT: [[SDIV:%.*]] = sdiv i64 [[SUB]], %N
885 ; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds %struct.C, %struct.C* %c2, i64 %sdiv
886 ; CHECK-NEXT: ret %struct.C* [[GEP]]
889 define i32 addrspace(1)* @ascast_0_gep(i32* %p) nounwind {
890 ; CHECK-LABEL: @ascast_0_gep(
891 ; CHECK-NOT: getelementptr
893 %gep = getelementptr i32, i32* %p, i32 0
894 %x = addrspacecast i32* %gep to i32 addrspace(1)*
895 ret i32 addrspace(1)* %x
898 ; Do not merge the GEP and the addrspacecast, because it would undo the
899 ; addrspacecast canonicalization.
900 define i32 addrspace(1)* @ascast_0_0_gep([128 x i32]* %p) nounwind {
901 ; CHECK-LABEL: @ascast_0_0_gep(
902 ; CHECK-NEXT: getelementptr [128 x i32]
903 ; CHECK-NEXT: addrspacecast i32*
904 ; CHECK-NEXT: ret i32 addrspace(1)*
905 %gep = getelementptr [128 x i32], [128 x i32]* %p, i32 0, i32 0
906 %x = addrspacecast i32* %gep to i32 addrspace(1)*
907 ret i32 addrspace(1)* %x
910 ; CHECK: attributes [[NUW]] = { nounwind }