llvm-mirror/test/CodeGen/AArch64/PBQP-csr.ll
Daniel Neilson f59acc15ad Remove alignment argument from memcpy/memmove/memset in favour of alignment attributes (Step 1)
Summary:
 This is a resurrection of work first proposed and discussed in Aug 2015:
   http://lists.llvm.org/pipermail/llvm-dev/2015-August/089384.html
and initially landed (but then backed out) in Nov 2015:
   http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151109/312083.html

 The @llvm.memcpy/memmove/memset intrinsics currently have an explicit argument
which is required to be a constant integer. It represents the alignment of the
dest (and source), and so must be the minimum of the actual alignment of the
two.

 This change is the first in a series that allows source and dest to each
have their own alignments by using the alignment attribute on their arguments.

 In this change we:
1) Remove the alignment argument.
2) Add alignment attributes to the source & dest arguments. We, temporarily,
   require that the alignments for source & dest be equal.

 For example, code which used to read:
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 100, i32 4, i1 false)
will now read
  call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %dest, i8* align 4 %src, i32 100, i1 false)

 Downstream users may have to update their lit tests that check for
@llvm.memcpy/memmove/memset call/declaration patterns. The following extended sed script
may help with updating the majority of your tests, but it does not catch all possible
patterns so some manual checking and updating will be required.

s~declare void @llvm\.mem(set|cpy|move)\.p([^(]*)\((.*), i32, i1\)~declare void @llvm.mem\1.p\2(\3, i1)~g
s~call void @llvm\.memset\.p([^(]*)i8\(i8([^*]*)\* (.*), i8 (.*), i8 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i8(i8\2* \3, i8 \4, i8 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i16\(i8([^*]*)\* (.*), i8 (.*), i16 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i16(i8\2* \3, i8 \4, i16 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i32\(i8([^*]*)\* (.*), i8 (.*), i32 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i32(i8\2* \3, i8 \4, i32 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i64\(i8([^*]*)\* (.*), i8 (.*), i64 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i64(i8\2* \3, i8 \4, i64 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i128\(i8([^*]*)\* (.*), i8 (.*), i128 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.memset.p\1i128(i8\2* \3, i8 \4, i128 \5, i1 \6)~g
s~call void @llvm\.memset\.p([^(]*)i8\(i8([^*]*)\* (.*), i8 (.*), i8 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i8(i8\2* align \6 \3, i8 \4, i8 \5, i1 \7)~g
s~call void @llvm\.memset\.p([^(]*)i16\(i8([^*]*)\* (.*), i8 (.*), i16 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i16(i8\2* align \6 \3, i8 \4, i16 \5, i1 \7)~g
s~call void @llvm\.memset\.p([^(]*)i32\(i8([^*]*)\* (.*), i8 (.*), i32 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i32(i8\2* align \6 \3, i8 \4, i32 \5, i1 \7)~g
s~call void @llvm\.memset\.p([^(]*)i64\(i8([^*]*)\* (.*), i8 (.*), i64 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i64(i8\2* align \6 \3, i8 \4, i64 \5, i1 \7)~g
s~call void @llvm\.memset\.p([^(]*)i128\(i8([^*]*)\* (.*), i8 (.*), i128 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.memset.p\1i128(i8\2* align \6 \3, i8 \4, i128 \5, i1 \7)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i8\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i8 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i8(i8\3* \4, i8\5* \6, i8 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i16\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i16 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i16(i8\3* \4, i8\5* \6, i16 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i32\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i32 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i32(i8\3* \4, i8\5* \6, i32 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i64\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i64 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i64(i8\3* \4, i8\5* \6, i64 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i128\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i128 (.*), i32 [01], i1 ([^)]*)\)~call void @llvm.mem\1.p\2i128(i8\3* \4, i8\5* \6, i128 \7, i1 \8)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i8\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i8 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i8(i8\3* align \8 \4, i8\5* align \8 \6, i8 \7, i1 \9)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i16\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i16 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i16(i8\3* align \8 \4, i8\5* align \8 \6, i16 \7, i1 \9)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i32\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i32 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i32(i8\3* align \8 \4, i8\5* align \8 \6, i32 \7, i1 \9)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i64\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i64 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i64(i8\3* align \8 \4, i8\5* align \8 \6, i64 \7, i1 \9)~g
s~call void @llvm\.mem(cpy|move)\.p([^(]*)i128\(i8([^*]*)\* (.*), i8([^*]*)\* (.*), i128 (.*), i32 ([0-9]*), i1 ([^)]*)\)~call void @llvm.mem\1.p\2i128(i8\3* align \8 \4, i8\5* align \8 \6, i128 \7, i1 \9)~g

 The remaining changes in the series will:
Step 2) Expand the IRBuilder API to allow creation of memcpy/memmove with differing
   source and dest alignments.
Step 3) Update Clang to use the new IRBuilder API.
Step 4) Update Polly to use the new IRBuilder API.
Step 5) Update LLVM passes that create memcpy/memmove calls to use the new IRBuilder API,
        and those that use use MemIntrinsicInst::[get|set]Alignment() to use
        getDestAlignment() and getSourceAlignment() instead.
Step 6) Remove the single-alignment IRBuilder API for memcpy/memmove, and the
        MemIntrinsicInst::[get|set]Alignment() methods.

Reviewers: pete, hfinkel, lhames, reames, bollu

Reviewed By: reames

Subscribers: niosHD, reames, jholewinski, qcolombet, jfb, sanjoy, arsenm, dschuff, dylanmckay, mehdi_amini, sdardis, nemanjai, david2050, nhaehnle, javed.absar, sbc100, jgravelle-google, eraman, aheejin, kbarton, JDevlieghere, asb, rbar, johnrusso, simoncook, jordy.potman.lists, apazos, sabuasal, llvm-commits

Differential Revision: https://reviews.llvm.org/D41675

llvm-svn: 322965
2018-01-19 17:13:12 +00:00

92 lines
4.4 KiB
LLVM

; RUN: llc < %s -verify-machineinstrs -mtriple=aarch64-none-linux-gnu -mcpu=cortex-a57 -mattr=+neon -fp-contract=fast -regalloc=pbqp -pbqp-coalescing | FileCheck %s
%pl = type { i32, i32, i32, i32, %p*, %l*, double* }
%p = type { i32, %ca*, [27 x %ca*], %v*, %v*, %v*, i32 }
%ca = type { %v, float, i32 }
%v = type { double, double, double }
%l = type opaque
%rs = type { i32, i32, i32, i32, %v*, %v*, [21 x double], %v, %v, %v, double, double, double }
;CHECK-LABEL: test_csr
define void @test_csr(%pl* nocapture readnone %this, %rs* nocapture %r) align 2 {
;CHECK-NOT: stp {{d[0-9]+}}, {{d[0-9]+}}
entry:
%x.i = getelementptr inbounds %rs, %rs* %r, i64 0, i32 7, i32 0
%y.i = getelementptr inbounds %rs, %rs* %r, i64 0, i32 7, i32 1
%z.i = getelementptr inbounds %rs, %rs* %r, i64 0, i32 7, i32 2
%x.i61 = getelementptr inbounds %rs, %rs* %r, i64 0, i32 8, i32 0
%y.i62 = getelementptr inbounds %rs, %rs* %r, i64 0, i32 8, i32 1
%z.i63 = getelementptr inbounds %rs, %rs* %r, i64 0, i32 8, i32 2
%x.i58 = getelementptr inbounds %rs, %rs* %r, i64 0, i32 9, i32 0
%y.i59 = getelementptr inbounds %rs, %rs* %r, i64 0, i32 9, i32 1
%z.i60 = getelementptr inbounds %rs, %rs* %r, i64 0, i32 9, i32 2
%na = getelementptr inbounds %rs, %rs* %r, i64 0, i32 0
%0 = bitcast double* %x.i to i8*
call void @llvm.memset.p0i8.i64(i8* align 8 %0, i8 0, i64 72, i1 false)
%1 = load i32, i32* %na, align 4
%cmp70 = icmp sgt i32 %1, 0
br i1 %cmp70, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %entry
%fn = getelementptr inbounds %rs, %rs* %r, i64 0, i32 4
%2 = load %v*, %v** %fn, align 8
%fs = getelementptr inbounds %rs, %rs* %r, i64 0, i32 5
%3 = load %v*, %v** %fs, align 8
%4 = sext i32 %1 to i64
br label %for.body
for.body: ; preds = %for.body.lr.ph, %for.body
%5 = phi double [ 0.000000e+00, %for.body.lr.ph ], [ %add6.i, %for.body ]
%indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
%6 = phi <2 x double> [ zeroinitializer, %for.body.lr.ph ], [ %17, %for.body ]
%7 = phi <2 x double> [ zeroinitializer, %for.body.lr.ph ], [ %22, %for.body ]
%8 = phi <2 x double> [ zeroinitializer, %for.body.lr.ph ], [ %26, %for.body ]
%9 = phi <2 x double> [ zeroinitializer, %for.body.lr.ph ], [ %28, %for.body ]
%x.i54 = getelementptr inbounds %v, %v* %2, i64 %indvars.iv, i32 0
%x1.i = getelementptr inbounds %v, %v* %3, i64 %indvars.iv, i32 0
%y.i56 = getelementptr inbounds %v, %v* %2, i64 %indvars.iv, i32 1
%10 = bitcast double* %x.i54 to <2 x double>*
%11 = load <2 x double>, <2 x double>* %10, align 8
%y2.i = getelementptr inbounds %v, %v* %3, i64 %indvars.iv, i32 1
%12 = bitcast double* %x1.i to <2 x double>*
%13 = load <2 x double>, <2 x double>* %12, align 8
%14 = fadd fast <2 x double> %13, %11
%z.i57 = getelementptr inbounds %v, %v* %2, i64 %indvars.iv, i32 2
%15 = load double, double* %z.i57, align 8
%z4.i = getelementptr inbounds %v, %v* %3, i64 %indvars.iv, i32 2
%16 = load double, double* %z4.i, align 8
%add5.i = fadd fast double %16, %15
%17 = fadd fast <2 x double> %6, %11
%18 = bitcast double* %x.i to <2 x double>*
store <2 x double> %17, <2 x double>* %18, align 8
%19 = load double, double* %x1.i, align 8
%20 = insertelement <2 x double> undef, double %15, i32 0
%21 = insertelement <2 x double> %20, double %19, i32 1
%22 = fadd fast <2 x double> %7, %21
%23 = bitcast double* %z.i to <2 x double>*
store <2 x double> %22, <2 x double>* %23, align 8
%24 = bitcast double* %y2.i to <2 x double>*
%25 = load <2 x double>, <2 x double>* %24, align 8
%26 = fadd fast <2 x double> %8, %25
%27 = bitcast double* %y.i62 to <2 x double>*
store <2 x double> %26, <2 x double>* %27, align 8
%28 = fadd fast <2 x double> %14, %9
%29 = bitcast double* %x.i58 to <2 x double>*
store <2 x double> %28, <2 x double>* %29, align 8
%add6.i = fadd fast double %add5.i, %5
store double %add6.i, double* %z.i60, align 8
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%cmp = icmp slt i64 %indvars.iv.next, %4
br i1 %cmp, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
; Function Attrs: nounwind
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1)