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llvm-project/llvm/test/Transforms/InstCombine/gep-vector.ll

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[InstCombine] regenerate test checks; NFC llvm-svn: 328325
2018-03-23 23:19:35 +08:00
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
[ConstantFold] Get the correct vector type when folding a getelementptr. Differential Revision: https://reviews.llvm.org/D26014 llvm-svn: 285371
2016-10-28 08:53:16 +08:00
; RUN: opt -instcombine %s -S | FileCheck %s
[ConstantFold] Fix a crash when folding a GEP that has vector index LLVM crashes when factoring out an out-of-bound index into preceding dimension and the preceding dimension uses vector index. Simply bail out now when this case happens. Differential Revision: https://reviews.llvm.org/D38677 llvm-svn: 316824
2017-10-28 10:27:14 +08:00
@block = global [64 x [8192 x i8]] zeroinitializer, align 1
[ConstantFold] Support vector index when factoring out GEP index into preceding dimensions Follow-up of r316824. This patch supports the vector type for both current and previous index when factoring out the current one into the previous one. Differential Revision: https://reviews.llvm.org/D39556 llvm-svn: 319683
2017-12-05 03:56:33 +08:00
define <2 x i8*> @vectorindex1() {
[InstCombine] regenerate test checks; NFC llvm-svn: 328325
2018-03-23 23:19:35 +08:00
; CHECK-LABEL: @vectorindex1(
; CHECK-NEXT: ret <2 x i8*> getelementptr inbounds ([64 x [8192 x i8]], [64 x [8192 x i8]]* @block, <2 x i64> zeroinitializer, <2 x i64> <i64 1, i64 2>, <2 x i64> zeroinitializer)
;
[ConstantFold] Fix a crash when folding a GEP that has vector index LLVM crashes when factoring out an out-of-bound index into preceding dimension and the preceding dimension uses vector index. Simply bail out now when this case happens. Differential Revision: https://reviews.llvm.org/D38677 llvm-svn: 316824
2017-10-28 10:27:14 +08:00
%1 = getelementptr inbounds [64 x [8192 x i8]], [64 x [8192 x i8]]* @block, i64 0, <2 x i64> <i64 0, i64 1>, i64 8192
ret <2 x i8*> %1
}
[ConstantFold] Support vector index when factoring out GEP index into preceding dimensions Follow-up of r316824. This patch supports the vector type for both current and previous index when factoring out the current one into the previous one. Differential Revision: https://reviews.llvm.org/D39556 llvm-svn: 319683
2017-12-05 03:56:33 +08:00
define <2 x i8*> @vectorindex2() {
[InstCombine] regenerate test checks; NFC llvm-svn: 328325
2018-03-23 23:19:35 +08:00
; CHECK-LABEL: @vectorindex2(
; CHECK-NEXT: ret <2 x i8*> getelementptr inbounds ([64 x [8192 x i8]], [64 x [8192 x i8]]* @block, <2 x i64> zeroinitializer, <2 x i64> <i64 1, i64 2>, <2 x i64> <i64 8191, i64 1>)
;
[ConstantFold] Support vector index when factoring out GEP index into preceding dimensions Follow-up of r316824. This patch supports the vector type for both current and previous index when factoring out the current one into the previous one. Differential Revision: https://reviews.llvm.org/D39556 llvm-svn: 319683
2017-12-05 03:56:33 +08:00
%1 = getelementptr inbounds [64 x [8192 x i8]], [64 x [8192 x i8]]* @block, i64 0, i64 1, <2 x i64> <i64 8191, i64 8193>
ret <2 x i8*> %1
}
define <2 x i8*> @vectorindex3() {
[InstCombine] regenerate test checks; NFC llvm-svn: 328325
2018-03-23 23:19:35 +08:00
; CHECK-LABEL: @vectorindex3(
; CHECK-NEXT: ret <2 x i8*> getelementptr inbounds ([64 x [8192 x i8]], [64 x [8192 x i8]]* @block, <2 x i64> zeroinitializer, <2 x i64> <i64 0, i64 2>, <2 x i64> <i64 8191, i64 1>)
;
[ConstantFold] Support vector index when factoring out GEP index into preceding dimensions Follow-up of r316824. This patch supports the vector type for both current and previous index when factoring out the current one into the previous one. Differential Revision: https://reviews.llvm.org/D39556 llvm-svn: 319683
2017-12-05 03:56:33 +08:00
%1 = getelementptr inbounds [64 x [8192 x i8]], [64 x [8192 x i8]]* @block, i64 0, <2 x i64> <i64 0, i64 1>, <2 x i64> <i64 8191, i64 8193>
ret <2 x i8*> %1
}
[InstCombine] regenerate test checks; NFC llvm-svn: 328325
2018-03-23 23:19:35 +08:00
[InstCombine] peek through bitcasted vector/array pointer GEP operand The bitcast may be interfering with other combines or vectorization as shown in PR16739: https://bugs.llvm.org/show_bug.cgi?id=16739 Most pointer-related optimizations are probably able to look through this bitcast, but removing the bitcast shrinks the IR, so it's at least a size savings. Differential Revision: https://reviews.llvm.org/D44833 llvm-svn: 330237
2018-04-18 08:36:40 +08:00
define i32* @bitcast_vec_to_array_gep(<7 x i32>* %x, i64 %y, i64 %z) {
; CHECK-LABEL: @bitcast_vec_to_array_gep(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr <7 x i32>, <7 x i32>* [[X:%.*]], i64 [[Y:%.*]], i64 [[Z:%.*]]
; CHECK-NEXT: ret i32* [[GEP]]
;
%arr_ptr = bitcast <7 x i32>* %x to [7 x i32]*
%gep = getelementptr [7 x i32], [7 x i32]* %arr_ptr, i64 %y, i64 %z
ret i32* %gep
}
define i32* @bitcast_array_to_vec_gep([3 x i32]* %x, i64 %y, i64 %z) {
; CHECK-LABEL: @bitcast_array_to_vec_gep(
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds [3 x i32], [3 x i32]* [[X:%.*]], i64 [[Y:%.*]], i64 [[Z:%.*]]
; CHECK-NEXT: ret i32* [[GEP]]
;
%vec_ptr = bitcast [3 x i32]* %x to <3 x i32>*
%gep = getelementptr inbounds <3 x i32>, <3 x i32>* %vec_ptr, i64 %y, i64 %z
ret i32* %gep
}