ca2396e673
Summary: For better vectorization result we should take into consideration the cost of the user insertelement instructions when we try to vectorize sequences that build the whole vector. I.e. if we have the following scalar code: ``` <Scalar code> insertelement <ScalarCode>, ... ``` we should consider the cost of the last `insertelement ` instructions as the cost of the scalar code. Reviewers: RKSimon, spatel, hfinkel, mkuper Subscribers: javed.absar, llvm-commits Differential Revision: https://reviews.llvm.org/D42657 llvm-svn: 324893
50 lines
3.1 KiB
LLVM
50 lines
3.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -slp-vectorizer -S -mtriple=x86_64-unknown-linux -mattr=+sse4.2 | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@a = common local_unnamed_addr global [4 x i32] zeroinitializer, align 4
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@b = common local_unnamed_addr global [4 x i32] zeroinitializer, align 4
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define i32 @fn1() {
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; CHECK-LABEL: @fn1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* getelementptr inbounds ([4 x i32], [4 x i32]* @b, i64 0, i32 0), align 4
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; CHECK-NEXT: [[TMP1:%.*]] = load <2 x i32>, <2 x i32>* bitcast (i32* getelementptr inbounds ([4 x i32], [4 x i32]* @b, i64 0, i32 1) to <2 x i32>*), align 4
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; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* getelementptr inbounds ([4 x i32], [4 x i32]* @b, i64 0, i32 3), align 4
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; CHECK-NEXT: [[TMP3:%.*]] = extractelement <2 x i32> [[TMP1]], i32 0
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; CHECK-NEXT: [[TMP4:%.*]] = insertelement <4 x i32> undef, i32 [[TMP3]], i32 0
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; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x i32> [[TMP1]], i32 1
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; CHECK-NEXT: [[TMP6:%.*]] = insertelement <4 x i32> [[TMP4]], i32 [[TMP5]], i32 1
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; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x i32> [[TMP6]], i32 [[TMP2]], i32 2
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; CHECK-NEXT: [[TMP8:%.*]] = insertelement <4 x i32> [[TMP7]], i32 [[TMP0]], i32 3
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; CHECK-NEXT: [[TMP9:%.*]] = icmp sgt <4 x i32> [[TMP8]], zeroinitializer
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; CHECK-NEXT: [[TMP10:%.*]] = insertelement <4 x i32> [[TMP4]], i32 ptrtoint (i32 ()* @fn1 to i32), i32 1
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; CHECK-NEXT: [[TMP11:%.*]] = insertelement <4 x i32> [[TMP10]], i32 ptrtoint (i32 ()* @fn1 to i32), i32 2
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; CHECK-NEXT: [[TMP12:%.*]] = insertelement <4 x i32> [[TMP11]], i32 8, i32 3
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; CHECK-NEXT: [[TMP13:%.*]] = select <4 x i1> [[TMP9]], <4 x i32> [[TMP12]], <4 x i32> <i32 6, i32 0, i32 0, i32 0>
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; CHECK-NEXT: store <4 x i32> [[TMP13]], <4 x i32>* bitcast ([4 x i32]* @a to <4 x i32>*), align 4
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%0 = load i32, i32* getelementptr ([4 x i32], [4 x i32]* @b, i64 0, i32 0), align 4
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%cmp = icmp sgt i32 %0, 0
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%cond = select i1 %cmp, i32 8, i32 0
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store i32 %cond, i32* getelementptr inbounds ([4 x i32], [4 x i32]* @a, i64 0, i32 3), align 4
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%1 = load i32, i32* getelementptr ([4 x i32], [4 x i32]* @b, i64 0, i32 1), align 4
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%cmp1 = icmp sgt i32 %1, 0
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%. = select i1 %cmp1, i32 %1, i32 6
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store i32 %., i32* getelementptr inbounds ([4 x i32], [4 x i32]* @a, i64 0, i32 0), align 4
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%2 = load i32, i32* getelementptr ([4 x i32], [4 x i32]* @b, i64 0, i32 2), align 4
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%cmp4 = icmp sgt i32 %2, 0
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%3 = select i1 %cmp4, i32 ptrtoint (i32 ()* @fn1 to i32), i32 0
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store i32 %3, i32* getelementptr inbounds ([4 x i32], [4 x i32]* @a, i64 0, i32 1), align 4
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%4 = load i32, i32* getelementptr ([4 x i32], [4 x i32]* @b, i64 0, i32 3), align 4
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%cmp6 = icmp sgt i32 %4, 0
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%5 = select i1 %cmp6, i32 ptrtoint (i32 ()* @fn1 to i32), i32 0
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store i32 %5, i32* getelementptr inbounds ([4 x i32], [4 x i32]* @a, i64 0, i32 2), align 4
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ret i32 0
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}
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