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[SLP] Add test case for a gather sequence with multiple uses 

llvm-svn: 328133
This commit is contained in:
Matthew Simpson 2018-03-21 19:13:14 +00:00
parent 71349ff07d
commit b17fff79f0
1 changed files with 66 additions and 0 deletions
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llvm/test/Transforms/SLPVectorizer/AArch64/gather-cost.ll Normal file
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; RUN: opt < %s -S -slp-vectorizer -instcombine -pass-remarks-output=%t | FileCheck %s
; RUN: cat %t | FileCheck -check-prefix=REMARK %s
; RUN: opt < %s -S -passes='slp-vectorizer,instcombine' -pass-remarks-output=%t | FileCheck %s
; RUN: cat %t | FileCheck -check-prefix=REMARK %s
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--linux-gnu"
; CHECK-LABEL: @gather_multiple_use(
; CHECK-NEXT: [[TMP00:%.*]] = lshr i32 [[A:%.*]], 15
; CHECK-NEXT: [[TMP01:%.*]] = and i32 [[TMP00]], 65537
; CHECK-NEXT: [[TMP02:%.*]] = mul nuw i32 [[TMP01]], 65535
; CHECK-NEXT: [[TMP03:%.*]] = add i32 [[TMP02]], [[A]]
; CHECK-NEXT: [[TMP04:%.*]] = xor i32 [[TMP03]], [[TMP02]]
; CHECK-NEXT: [[TMP05:%.*]] = lshr i32 [[C:%.*]], 15
; CHECK-NEXT: [[TMP06:%.*]] = and i32 [[TMP05]], 65537
; CHECK-NEXT: [[TMP07:%.*]] = mul nuw i32 [[TMP06]], 65535
; CHECK-NEXT: [[TMP08:%.*]] = add i32 [[TMP07]], [[C]]
; CHECK-NEXT: [[TMP09:%.*]] = xor i32 [[TMP08]], [[TMP07]]
; CHECK-NEXT: [[TMP10:%.*]] = lshr i32 [[B:%.*]], 15
; CHECK-NEXT: [[TMP11:%.*]] = and i32 [[TMP10]], 65537
; CHECK-NEXT: [[TMP12:%.*]] = mul nuw i32 [[TMP11]], 65535
; CHECK-NEXT: [[TMP13:%.*]] = add i32 [[TMP12]], [[B]]
; CHECK-NEXT: [[TMP14:%.*]] = xor i32 [[TMP13]], [[TMP12]]
; CHECK-NEXT: [[TMP15:%.*]] = lshr i32 [[D:%.*]], 15
; CHECK-NEXT: [[TMP16:%.*]] = and i32 [[TMP15]], 65537
; CHECK-NEXT: [[TMP17:%.*]] = mul nuw i32 [[TMP16]], 65535
; CHECK-NEXT: [[TMP18:%.*]] = add i32 [[TMP17]], [[D]]
; CHECK-NEXT: [[TMP19:%.*]] = xor i32 [[TMP18]], [[TMP17]]
; CHECK-NEXT: [[TMP20:%.*]] = add i32 [[TMP09]], [[TMP04]]
; CHECK-NEXT: [[TMP21:%.*]] = add i32 [[TMP20]], [[TMP14]]
; CHECK-NEXT: [[TMP22:%.*]] = add i32 [[TMP21]], [[TMP19]]
; CHECK-NEXT: ret i32 [[TMP22]]
;
; REMARK-LABEL: Function: gather_multiple_use
; REMARK: Args:
; REMARK-NEXT: - String: Vectorizing horizontal reduction is possible
; REMARK-NEXT: - String: 'but not beneficial with cost '
; REMARK-NEXT: - Cost: '2'
;
define internal i32 @gather_multiple_use(i32 %a, i32 %b, i32 %c, i32 %d) {
%tmp00 = lshr i32 %a, 15
%tmp01 = and i32 %tmp00, 65537
%tmp02 = mul nuw i32 %tmp01, 65535
%tmp03 = add i32 %tmp02, %a
%tmp04 = xor i32 %tmp03, %tmp02
%tmp05 = lshr i32 %c, 15
%tmp06 = and i32 %tmp05, 65537
%tmp07 = mul nuw i32 %tmp06, 65535
%tmp08 = add i32 %tmp07, %c
%tmp09 = xor i32 %tmp08, %tmp07
%tmp10 = lshr i32 %b, 15
%tmp11 = and i32 %tmp10, 65537
%tmp12 = mul nuw i32 %tmp11, 65535
%tmp13 = add i32 %tmp12, %b
%tmp14 = xor i32 %tmp13, %tmp12
%tmp15 = lshr i32 %d, 15
%tmp16 = and i32 %tmp15, 65537
%tmp17 = mul nuw i32 %tmp16, 65535
%tmp18 = add i32 %tmp17, %d
%tmp19 = xor i32 %tmp18, %tmp17
%tmp20 = add i32 %tmp09, %tmp04
%tmp21 = add i32 %tmp20, %tmp14
%tmp22 = add i32 %tmp21, %tmp19
ret i32 %tmp22
}