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llvm-project/llvm/test/CodeGen/X86/avoid-sfb-overlaps.ll
Lama Saba 927468309f [X86] Reduce Store Forward Block issues in HW - Recommit after fixing Bug 36346 
If a load follows a store and reloads data that the store has written to memory, Intel microarchitectures can in many cases forward the data directly from the store to the load, This "store forwarding" saves cycles by enabling the load to directly obtain the data instead of accessing the data from cache or memory.
A "store forward block" occurs in cases that a store cannot be forwarded to the load. The most typical case of store forward block on Intel Core microarchiticutre that a small store cannot be forwarded to a large load.
The estimated penalty for a store forward block is ~13 cycles.

This pass tries to recognize and handle cases where "store forward block" is created by the compiler when lowering memcpy calls to a sequence
of a load and a store.

The pass currently only handles cases where memcpy is lowered to XMM/YMM registers, it tries to break the memcpy into smaller copies.
breaking the memcpy should be possible since there is no atomicity guarantee for loads and stores to XMM/YMM.

Differential revision: https://reviews.llvm.org/D41330

Change-Id: Ib48836ccdf6005989f7d4466fa2035b7b04415d9
llvm-svn: 328973
2018-04-02 13:48:28 +00:00

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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=CHECK
; RUN: llc < %s -mtriple=x86_64-linux --x86-disable-avoid-SFB | FileCheck %s --check-prefix=DISABLED
; RUN: llc < %s -mtriple=x86_64-linux -mcpu=core-avx2 | FileCheck %s -check-prefix=CHECK-AVX2
; RUN: llc < %s -mtriple=x86_64-linux -mcpu=skx | FileCheck %s -check-prefix=CHECK-AVX512
; ModuleID = '../testSFB/testOverlapBlocks.c'
source_filename = "../testSFB/testOverlapBlocks.c"
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Function Attrs: nounwind uwtable
define dso_local void @test_overlap_1(i8* nocapture %A, i32 %x) local_unnamed_addr #0 {
; CHECK-LABEL: test_overlap_1:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movl $7, -8(%rdi)
; CHECK-NEXT: movq -16(%rdi), %rax
; CHECK-NEXT: movq %rax, (%rdi)
; CHECK-NEXT: movl -8(%rdi), %eax
; CHECK-NEXT: movl %eax, 8(%rdi)
; CHECK-NEXT: movl -4(%rdi), %eax
; CHECK-NEXT: movl %eax, 12(%rdi)
; CHECK-NEXT: movslq %esi, %rax
; CHECK-NEXT: movq %rax, -9(%rdi)
; CHECK-NEXT: movq %rax, -16(%rdi)
; CHECK-NEXT: movb $0, -1(%rdi)
; CHECK-NEXT: movq -16(%rdi), %rax
; CHECK-NEXT: movq %rax, 16(%rdi)
; CHECK-NEXT: movl -8(%rdi), %eax
; CHECK-NEXT: movl %eax, 24(%rdi)
; CHECK-NEXT: movzwl -4(%rdi), %eax
; CHECK-NEXT: movw %ax, 28(%rdi)
; CHECK-NEXT: movb -2(%rdi), %al
; CHECK-NEXT: movb %al, 30(%rdi)
; CHECK-NEXT: movb -1(%rdi), %al
; CHECK-NEXT: movb %al, 31(%rdi)
; CHECK-NEXT: retq
;
; DISABLED-LABEL: test_overlap_1:
; DISABLED: # %bb.0: # %entry
; DISABLED-NEXT: movl $7, -8(%rdi)
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, (%rdi)
; DISABLED-NEXT: movslq %esi, %rax
; DISABLED-NEXT: movq %rax, -9(%rdi)
; DISABLED-NEXT: movq %rax, -16(%rdi)
; DISABLED-NEXT: movb $0, -1(%rdi)
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, 16(%rdi)
; DISABLED-NEXT: retq
;
; CHECK-AVX2-LABEL: test_overlap_1:
; CHECK-AVX2: # %bb.0: # %entry
; CHECK-AVX2-NEXT: movl $7, -8(%rdi)
; CHECK-AVX2-NEXT: movq -16(%rdi), %rax
; CHECK-AVX2-NEXT: movq %rax, (%rdi)
; CHECK-AVX2-NEXT: movl -8(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 8(%rdi)
; CHECK-AVX2-NEXT: movl -4(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 12(%rdi)
; CHECK-AVX2-NEXT: movslq %esi, %rax
; CHECK-AVX2-NEXT: movq %rax, -9(%rdi)
; CHECK-AVX2-NEXT: movq %rax, -16(%rdi)
; CHECK-AVX2-NEXT: movb $0, -1(%rdi)
; CHECK-AVX2-NEXT: movq -16(%rdi), %rax
; CHECK-AVX2-NEXT: movq %rax, 16(%rdi)
; CHECK-AVX2-NEXT: movl -8(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 24(%rdi)
; CHECK-AVX2-NEXT: movzwl -4(%rdi), %eax
; CHECK-AVX2-NEXT: movw %ax, 28(%rdi)
; CHECK-AVX2-NEXT: movb -2(%rdi), %al
; CHECK-AVX2-NEXT: movb %al, 30(%rdi)
; CHECK-AVX2-NEXT: movb -1(%rdi), %al
; CHECK-AVX2-NEXT: movb %al, 31(%rdi)
; CHECK-AVX2-NEXT: retq
;
; CHECK-AVX512-LABEL: test_overlap_1:
; CHECK-AVX512: # %bb.0: # %entry
; CHECK-AVX512-NEXT: movl $7, -8(%rdi)
; CHECK-AVX512-NEXT: movq -16(%rdi), %rax
; CHECK-AVX512-NEXT: movq %rax, (%rdi)
; CHECK-AVX512-NEXT: movl -8(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 8(%rdi)
; CHECK-AVX512-NEXT: movl -4(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 12(%rdi)
; CHECK-AVX512-NEXT: movslq %esi, %rax
; CHECK-AVX512-NEXT: movq %rax, -9(%rdi)
; CHECK-AVX512-NEXT: movq %rax, -16(%rdi)
; CHECK-AVX512-NEXT: movb $0, -1(%rdi)
; CHECK-AVX512-NEXT: movq -16(%rdi), %rax
; CHECK-AVX512-NEXT: movq %rax, 16(%rdi)
; CHECK-AVX512-NEXT: movl -8(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 24(%rdi)
; CHECK-AVX512-NEXT: movzwl -4(%rdi), %eax
; CHECK-AVX512-NEXT: movw %ax, 28(%rdi)
; CHECK-AVX512-NEXT: movb -2(%rdi), %al
; CHECK-AVX512-NEXT: movb %al, 30(%rdi)
; CHECK-AVX512-NEXT: movb -1(%rdi), %al
; CHECK-AVX512-NEXT: movb %al, 31(%rdi)
; CHECK-AVX512-NEXT: retq
entry:
%add.ptr = getelementptr inbounds i8, i8* %A, i64 -16
%add.ptr1 = getelementptr inbounds i8, i8* %A, i64 -8
%0 = bitcast i8* %add.ptr1 to i32*
store i32 7, i32* %0, align 4
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %A, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
%conv = sext i32 %x to i64
%add.ptr2 = getelementptr inbounds i8, i8* %A, i64 -9
%1 = bitcast i8* %add.ptr2 to i64*
store i64 %conv, i64* %1, align 8
%2 = bitcast i8* %add.ptr to i64*
store i64 %conv, i64* %2, align 8
%add.ptr5 = getelementptr inbounds i8, i8* %A, i64 -1
store i8 0, i8* %add.ptr5, align 1
%add.ptr6 = getelementptr inbounds i8, i8* %A, i64 16
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 %add.ptr6, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
ret void
}
; Function Attrs: argmemonly nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1) #1
; Function Attrs: nounwind uwtable
define dso_local void @test_overlap_2(i8* nocapture %A, i32 %x) local_unnamed_addr #0 {
; CHECK-LABEL: test_overlap_2:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movslq %esi, %rax
; CHECK-NEXT: movq %rax, -16(%rdi)
; CHECK-NEXT: movq -16(%rdi), %rcx
; CHECK-NEXT: movq %rcx, (%rdi)
; CHECK-NEXT: movq -8(%rdi), %rcx
; CHECK-NEXT: movq %rcx, 8(%rdi)
; CHECK-NEXT: movq %rax, -8(%rdi)
; CHECK-NEXT: movl $7, -12(%rdi)
; CHECK-NEXT: movl -16(%rdi), %eax
; CHECK-NEXT: movl %eax, 16(%rdi)
; CHECK-NEXT: movl -12(%rdi), %eax
; CHECK-NEXT: movl %eax, 20(%rdi)
; CHECK-NEXT: movq -8(%rdi), %rax
; CHECK-NEXT: movq %rax, 24(%rdi)
; CHECK-NEXT: retq
;
; DISABLED-LABEL: test_overlap_2:
; DISABLED: # %bb.0: # %entry
; DISABLED-NEXT: movslq %esi, %rax
; DISABLED-NEXT: movq %rax, -16(%rdi)
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, (%rdi)
; DISABLED-NEXT: movq %rax, -8(%rdi)
; DISABLED-NEXT: movl $7, -12(%rdi)
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, 16(%rdi)
; DISABLED-NEXT: retq
;
; CHECK-AVX2-LABEL: test_overlap_2:
; CHECK-AVX2: # %bb.0: # %entry
; CHECK-AVX2-NEXT: movslq %esi, %rax
; CHECK-AVX2-NEXT: movq %rax, -16(%rdi)
; CHECK-AVX2-NEXT: movq -16(%rdi), %rcx
; CHECK-AVX2-NEXT: movq %rcx, (%rdi)
; CHECK-AVX2-NEXT: movq -8(%rdi), %rcx
; CHECK-AVX2-NEXT: movq %rcx, 8(%rdi)
; CHECK-AVX2-NEXT: movq %rax, -8(%rdi)
; CHECK-AVX2-NEXT: movl $7, -12(%rdi)
; CHECK-AVX2-NEXT: movl -16(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 16(%rdi)
; CHECK-AVX2-NEXT: movl -12(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 20(%rdi)
; CHECK-AVX2-NEXT: movq -8(%rdi), %rax
; CHECK-AVX2-NEXT: movq %rax, 24(%rdi)
; CHECK-AVX2-NEXT: retq
;
; CHECK-AVX512-LABEL: test_overlap_2:
; CHECK-AVX512: # %bb.0: # %entry
; CHECK-AVX512-NEXT: movslq %esi, %rax
; CHECK-AVX512-NEXT: movq %rax, -16(%rdi)
; CHECK-AVX512-NEXT: movq -16(%rdi), %rcx
; CHECK-AVX512-NEXT: movq %rcx, (%rdi)
; CHECK-AVX512-NEXT: movq -8(%rdi), %rcx
; CHECK-AVX512-NEXT: movq %rcx, 8(%rdi)
; CHECK-AVX512-NEXT: movq %rax, -8(%rdi)
; CHECK-AVX512-NEXT: movl $7, -12(%rdi)
; CHECK-AVX512-NEXT: movl -16(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 16(%rdi)
; CHECK-AVX512-NEXT: movl -12(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 20(%rdi)
; CHECK-AVX512-NEXT: movq -8(%rdi), %rax
; CHECK-AVX512-NEXT: movq %rax, 24(%rdi)
; CHECK-AVX512-NEXT: retq
entry:
%add.ptr = getelementptr inbounds i8, i8* %A, i64 -16
%conv = sext i32 %x to i64
%0 = bitcast i8* %add.ptr to i64*
store i64 %conv, i64* %0, align 8
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %A, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
%add.ptr3 = getelementptr inbounds i8, i8* %A, i64 -8
%1 = bitcast i8* %add.ptr3 to i64*
store i64 %conv, i64* %1, align 8
%add.ptr4 = getelementptr inbounds i8, i8* %A, i64 -12
%2 = bitcast i8* %add.ptr4 to i32*
store i32 7, i32* %2, align 4
%add.ptr5 = getelementptr inbounds i8, i8* %A, i64 16
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 %add.ptr5, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
ret void
}
; Function Attrs: nounwind uwtable
define dso_local void @test_overlap_3(i8* nocapture %A, i32 %x) local_unnamed_addr #0 {
; CHECK-LABEL: test_overlap_3:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movl $7, -10(%rdi)
; CHECK-NEXT: movl -16(%rdi), %eax
; CHECK-NEXT: movl %eax, (%rdi)
; CHECK-NEXT: movzwl -12(%rdi), %eax
; CHECK-NEXT: movw %ax, 4(%rdi)
; CHECK-NEXT: movl -10(%rdi), %eax
; CHECK-NEXT: movl %eax, 6(%rdi)
; CHECK-NEXT: movl -6(%rdi), %eax
; CHECK-NEXT: movl %eax, 10(%rdi)
; CHECK-NEXT: movzwl -2(%rdi), %eax
; CHECK-NEXT: movw %ax, 14(%rdi)
; CHECK-NEXT: movslq %esi, %rax
; CHECK-NEXT: movq %rax, -9(%rdi)
; CHECK-NEXT: movq %rax, -16(%rdi)
; CHECK-NEXT: movb $0, -1(%rdi)
; CHECK-NEXT: movq -16(%rdi), %rax
; CHECK-NEXT: movq %rax, 16(%rdi)
; CHECK-NEXT: movzwl -8(%rdi), %eax
; CHECK-NEXT: movw %ax, 24(%rdi)
; CHECK-NEXT: movl -6(%rdi), %eax
; CHECK-NEXT: movl %eax, 26(%rdi)
; CHECK-NEXT: movb -2(%rdi), %al
; CHECK-NEXT: movb %al, 30(%rdi)
; CHECK-NEXT: movb -1(%rdi), %al
; CHECK-NEXT: movb %al, 31(%rdi)
; CHECK-NEXT: retq
;
; DISABLED-LABEL: test_overlap_3:
; DISABLED: # %bb.0: # %entry
; DISABLED-NEXT: movl $7, -10(%rdi)
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, (%rdi)
; DISABLED-NEXT: movslq %esi, %rax
; DISABLED-NEXT: movq %rax, -9(%rdi)
; DISABLED-NEXT: movq %rax, -16(%rdi)
; DISABLED-NEXT: movb $0, -1(%rdi)
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, 16(%rdi)
; DISABLED-NEXT: retq
;
; CHECK-AVX2-LABEL: test_overlap_3:
; CHECK-AVX2: # %bb.0: # %entry
; CHECK-AVX2-NEXT: movl $7, -10(%rdi)
; CHECK-AVX2-NEXT: movl -16(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, (%rdi)
; CHECK-AVX2-NEXT: movzwl -12(%rdi), %eax
; CHECK-AVX2-NEXT: movw %ax, 4(%rdi)
; CHECK-AVX2-NEXT: movl -10(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 6(%rdi)
; CHECK-AVX2-NEXT: movl -6(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 10(%rdi)
; CHECK-AVX2-NEXT: movzwl -2(%rdi), %eax
; CHECK-AVX2-NEXT: movw %ax, 14(%rdi)
; CHECK-AVX2-NEXT: movslq %esi, %rax
; CHECK-AVX2-NEXT: movq %rax, -9(%rdi)
; CHECK-AVX2-NEXT: movq %rax, -16(%rdi)
; CHECK-AVX2-NEXT: movb $0, -1(%rdi)
; CHECK-AVX2-NEXT: movq -16(%rdi), %rax
; CHECK-AVX2-NEXT: movq %rax, 16(%rdi)
; CHECK-AVX2-NEXT: movzwl -8(%rdi), %eax
; CHECK-AVX2-NEXT: movw %ax, 24(%rdi)
; CHECK-AVX2-NEXT: movl -6(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 26(%rdi)
; CHECK-AVX2-NEXT: movb -2(%rdi), %al
; CHECK-AVX2-NEXT: movb %al, 30(%rdi)
; CHECK-AVX2-NEXT: movb -1(%rdi), %al
; CHECK-AVX2-NEXT: movb %al, 31(%rdi)
; CHECK-AVX2-NEXT: retq
;
; CHECK-AVX512-LABEL: test_overlap_3:
; CHECK-AVX512: # %bb.0: # %entry
; CHECK-AVX512-NEXT: movl $7, -10(%rdi)
; CHECK-AVX512-NEXT: movl -16(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, (%rdi)
; CHECK-AVX512-NEXT: movzwl -12(%rdi), %eax
; CHECK-AVX512-NEXT: movw %ax, 4(%rdi)
; CHECK-AVX512-NEXT: movl -10(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 6(%rdi)
; CHECK-AVX512-NEXT: movl -6(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 10(%rdi)
; CHECK-AVX512-NEXT: movzwl -2(%rdi), %eax
; CHECK-AVX512-NEXT: movw %ax, 14(%rdi)
; CHECK-AVX512-NEXT: movslq %esi, %rax
; CHECK-AVX512-NEXT: movq %rax, -9(%rdi)
; CHECK-AVX512-NEXT: movq %rax, -16(%rdi)
; CHECK-AVX512-NEXT: movb $0, -1(%rdi)
; CHECK-AVX512-NEXT: movq -16(%rdi), %rax
; CHECK-AVX512-NEXT: movq %rax, 16(%rdi)
; CHECK-AVX512-NEXT: movzwl -8(%rdi), %eax
; CHECK-AVX512-NEXT: movw %ax, 24(%rdi)
; CHECK-AVX512-NEXT: movl -6(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 26(%rdi)
; CHECK-AVX512-NEXT: movb -2(%rdi), %al
; CHECK-AVX512-NEXT: movb %al, 30(%rdi)
; CHECK-AVX512-NEXT: movb -1(%rdi), %al
; CHECK-AVX512-NEXT: movb %al, 31(%rdi)
; CHECK-AVX512-NEXT: retq
entry:
%add.ptr = getelementptr inbounds i8, i8* %A, i64 -16
%add.ptr1 = getelementptr inbounds i8, i8* %A, i64 -10
%0 = bitcast i8* %add.ptr1 to i32*
store i32 7, i32* %0, align 4
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %A, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
%conv = sext i32 %x to i64
%add.ptr2 = getelementptr inbounds i8, i8* %A, i64 -9
%1 = bitcast i8* %add.ptr2 to i64*
store i64 %conv, i64* %1, align 8
%2 = bitcast i8* %add.ptr to i64*
store i64 %conv, i64* %2, align 8
%add.ptr5 = getelementptr inbounds i8, i8* %A, i64 -1
store i8 0, i8* %add.ptr5, align 1
%add.ptr6 = getelementptr inbounds i8, i8* %A, i64 16
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 %add.ptr6, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
ret void
}
; Function Attrs: nounwind uwtable
define dso_local void @test_overlap_4(i8* nocapture %A, i32 %x) local_unnamed_addr #0 {
; CHECK-LABEL: test_overlap_4:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movups -16(%rdi), %xmm0
; CHECK-NEXT: movups %xmm0, (%rdi)
; CHECK-NEXT: movslq %esi, %rax
; CHECK-NEXT: movq %rax, -8(%rdi)
; CHECK-NEXT: movl %eax, -16(%rdi)
; CHECK-NEXT: movl $0, -11(%rdi)
; CHECK-NEXT: movl -16(%rdi), %eax
; CHECK-NEXT: movl %eax, 16(%rdi)
; CHECK-NEXT: movb -12(%rdi), %al
; CHECK-NEXT: movb %al, 20(%rdi)
; CHECK-NEXT: movl -11(%rdi), %eax
; CHECK-NEXT: movl %eax, 21(%rdi)
; CHECK-NEXT: movl -7(%rdi), %eax
; CHECK-NEXT: movl %eax, 25(%rdi)
; CHECK-NEXT: movzwl -3(%rdi), %eax
; CHECK-NEXT: movw %ax, 29(%rdi)
; CHECK-NEXT: movb -1(%rdi), %al
; CHECK-NEXT: movb %al, 31(%rdi)
; CHECK-NEXT: retq
;
; DISABLED-LABEL: test_overlap_4:
; DISABLED: # %bb.0: # %entry
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, (%rdi)
; DISABLED-NEXT: movslq %esi, %rax
; DISABLED-NEXT: movq %rax, -8(%rdi)
; DISABLED-NEXT: movl %eax, -16(%rdi)
; DISABLED-NEXT: movl $0, -11(%rdi)
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, 16(%rdi)
; DISABLED-NEXT: retq
;
; CHECK-AVX2-LABEL: test_overlap_4:
; CHECK-AVX2: # %bb.0: # %entry
; CHECK-AVX2-NEXT: vmovups -16(%rdi), %xmm0
; CHECK-AVX2-NEXT: vmovups %xmm0, (%rdi)
; CHECK-AVX2-NEXT: movslq %esi, %rax
; CHECK-AVX2-NEXT: movq %rax, -8(%rdi)
; CHECK-AVX2-NEXT: movl %eax, -16(%rdi)
; CHECK-AVX2-NEXT: movl $0, -11(%rdi)
; CHECK-AVX2-NEXT: movl -16(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 16(%rdi)
; CHECK-AVX2-NEXT: movb -12(%rdi), %al
; CHECK-AVX2-NEXT: movb %al, 20(%rdi)
; CHECK-AVX2-NEXT: movl -11(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 21(%rdi)
; CHECK-AVX2-NEXT: movl -7(%rdi), %eax
; CHECK-AVX2-NEXT: movl %eax, 25(%rdi)
; CHECK-AVX2-NEXT: movzwl -3(%rdi), %eax
; CHECK-AVX2-NEXT: movw %ax, 29(%rdi)
; CHECK-AVX2-NEXT: movb -1(%rdi), %al
; CHECK-AVX2-NEXT: movb %al, 31(%rdi)
; CHECK-AVX2-NEXT: retq
;
; CHECK-AVX512-LABEL: test_overlap_4:
; CHECK-AVX512: # %bb.0: # %entry
; CHECK-AVX512-NEXT: vmovups -16(%rdi), %xmm0
; CHECK-AVX512-NEXT: vmovups %xmm0, (%rdi)
; CHECK-AVX512-NEXT: movslq %esi, %rax
; CHECK-AVX512-NEXT: movq %rax, -8(%rdi)
; CHECK-AVX512-NEXT: movl %eax, -16(%rdi)
; CHECK-AVX512-NEXT: movl $0, -11(%rdi)
; CHECK-AVX512-NEXT: movl -16(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 16(%rdi)
; CHECK-AVX512-NEXT: movb -12(%rdi), %al
; CHECK-AVX512-NEXT: movb %al, 20(%rdi)
; CHECK-AVX512-NEXT: movl -11(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 21(%rdi)
; CHECK-AVX512-NEXT: movl -7(%rdi), %eax
; CHECK-AVX512-NEXT: movl %eax, 25(%rdi)
; CHECK-AVX512-NEXT: movzwl -3(%rdi), %eax
; CHECK-AVX512-NEXT: movw %ax, 29(%rdi)
; CHECK-AVX512-NEXT: movb -1(%rdi), %al
; CHECK-AVX512-NEXT: movb %al, 31(%rdi)
; CHECK-AVX512-NEXT: retq
entry:
%add.ptr = getelementptr inbounds i8, i8* %A, i64 -16
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %A, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
%conv = sext i32 %x to i64
%add.ptr1 = getelementptr inbounds i8, i8* %A, i64 -8
%0 = bitcast i8* %add.ptr1 to i64*
store i64 %conv, i64* %0, align 8
%1 = bitcast i8* %add.ptr to i32*
store i32 %x, i32* %1, align 4
%add.ptr3 = getelementptr inbounds i8, i8* %A, i64 -11
%2 = bitcast i8* %add.ptr3 to i32*
store i32 0, i32* %2, align 4
%add.ptr4 = getelementptr inbounds i8, i8* %A, i64 16
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 %add.ptr4, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
ret void
}
; Function Attrs: nounwind uwtable
define dso_local void @test_overlap_5(i8* nocapture %A, i32 %x) local_unnamed_addr #0 {
; CHECK-LABEL: test_overlap_5:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movups -16(%rdi), %xmm0
; CHECK-NEXT: movups %xmm0, (%rdi)
; CHECK-NEXT: movslq %esi, %rax
; CHECK-NEXT: movq %rax, -16(%rdi)
; CHECK-NEXT: movb %al, -14(%rdi)
; CHECK-NEXT: movb $0, -11(%rdi)
; CHECK-NEXT: movzwl -16(%rdi), %eax
; CHECK-NEXT: movw %ax, 16(%rdi)
; CHECK-NEXT: movb -14(%rdi), %al
; CHECK-NEXT: movb %al, 18(%rdi)
; CHECK-NEXT: movzwl -13(%rdi), %eax
; CHECK-NEXT: movw %ax, 19(%rdi)
; CHECK-NEXT: movb -11(%rdi), %al
; CHECK-NEXT: movb %al, 21(%rdi)
; CHECK-NEXT: movq -10(%rdi), %rax
; CHECK-NEXT: movq %rax, 22(%rdi)
; CHECK-NEXT: movzwl -2(%rdi), %eax
; CHECK-NEXT: movw %ax, 30(%rdi)
; CHECK-NEXT: retq
;
; DISABLED-LABEL: test_overlap_5:
; DISABLED: # %bb.0: # %entry
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, (%rdi)
; DISABLED-NEXT: movslq %esi, %rax
; DISABLED-NEXT: movq %rax, -16(%rdi)
; DISABLED-NEXT: movb %al, -14(%rdi)
; DISABLED-NEXT: movb $0, -11(%rdi)
; DISABLED-NEXT: movups -16(%rdi), %xmm0
; DISABLED-NEXT: movups %xmm0, 16(%rdi)
; DISABLED-NEXT: retq
;
; CHECK-AVX2-LABEL: test_overlap_5:
; CHECK-AVX2: # %bb.0: # %entry
; CHECK-AVX2-NEXT: vmovups -16(%rdi), %xmm0
; CHECK-AVX2-NEXT: vmovups %xmm0, (%rdi)
; CHECK-AVX2-NEXT: movslq %esi, %rax
; CHECK-AVX2-NEXT: movq %rax, -16(%rdi)
; CHECK-AVX2-NEXT: movb %al, -14(%rdi)
; CHECK-AVX2-NEXT: movb $0, -11(%rdi)
; CHECK-AVX2-NEXT: movzwl -16(%rdi), %eax
; CHECK-AVX2-NEXT: movw %ax, 16(%rdi)
; CHECK-AVX2-NEXT: movb -14(%rdi), %al
; CHECK-AVX2-NEXT: movb %al, 18(%rdi)
; CHECK-AVX2-NEXT: movzwl -13(%rdi), %eax
; CHECK-AVX2-NEXT: movw %ax, 19(%rdi)
; CHECK-AVX2-NEXT: movb -11(%rdi), %al
; CHECK-AVX2-NEXT: movb %al, 21(%rdi)
; CHECK-AVX2-NEXT: movq -10(%rdi), %rax
; CHECK-AVX2-NEXT: movq %rax, 22(%rdi)
; CHECK-AVX2-NEXT: movzwl -2(%rdi), %eax
; CHECK-AVX2-NEXT: movw %ax, 30(%rdi)
; CHECK-AVX2-NEXT: retq
;
; CHECK-AVX512-LABEL: test_overlap_5:
; CHECK-AVX512: # %bb.0: # %entry
; CHECK-AVX512-NEXT: vmovups -16(%rdi), %xmm0
; CHECK-AVX512-NEXT: vmovups %xmm0, (%rdi)
; CHECK-AVX512-NEXT: movslq %esi, %rax
; CHECK-AVX512-NEXT: movq %rax, -16(%rdi)
; CHECK-AVX512-NEXT: movb %al, -14(%rdi)
; CHECK-AVX512-NEXT: movb $0, -11(%rdi)
; CHECK-AVX512-NEXT: movzwl -16(%rdi), %eax
; CHECK-AVX512-NEXT: movw %ax, 16(%rdi)
; CHECK-AVX512-NEXT: movb -14(%rdi), %al
; CHECK-AVX512-NEXT: movb %al, 18(%rdi)
; CHECK-AVX512-NEXT: movzwl -13(%rdi), %eax
; CHECK-AVX512-NEXT: movw %ax, 19(%rdi)
; CHECK-AVX512-NEXT: movb -11(%rdi), %al
; CHECK-AVX512-NEXT: movb %al, 21(%rdi)
; CHECK-AVX512-NEXT: movq -10(%rdi), %rax
; CHECK-AVX512-NEXT: movq %rax, 22(%rdi)
; CHECK-AVX512-NEXT: movzwl -2(%rdi), %eax
; CHECK-AVX512-NEXT: movw %ax, 30(%rdi)
; CHECK-AVX512-NEXT: retq
entry:
%add.ptr = getelementptr inbounds i8, i8* %A, i64 -16
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %A, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
%conv = sext i32 %x to i64
%0 = bitcast i8* %add.ptr to i64*
store i64 %conv, i64* %0, align 8
%conv2 = trunc i32 %x to i8
%add.ptr3 = getelementptr inbounds i8, i8* %A, i64 -14
store i8 %conv2, i8* %add.ptr3, align 1
%add.ptr4 = getelementptr inbounds i8, i8* %A, i64 -11
store i8 0, i8* %add.ptr4, align 1
%add.ptr5 = getelementptr inbounds i8, i8* %A, i64 16
tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 %add.ptr5, i8* nonnull align 4 %add.ptr, i64 16, i1 false)
ret void
}
attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { argmemonly nounwind }
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