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https://github.com/RPCS3/llvm-mirror.git
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f59acc15ad
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
302 lines
15 KiB
LLVM
302 lines
15 KiB
LLVM
; RUN: opt < %s -memcpyopt -S | FileCheck %s
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; All the stores in this example should be merged into a single memset.
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "i386-apple-darwin8"
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define void @test1(i8 signext %c) nounwind {
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entry:
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%x = alloca [19 x i8] ; <[19 x i8]*> [#uses=20]
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%tmp = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 0 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp, align 1
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%tmp5 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 1 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp5, align 1
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%tmp9 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 2 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp9, align 1
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%tmp13 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 3 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp13, align 1
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%tmp17 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 4 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp17, align 1
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%tmp21 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 5 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp21, align 1
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%tmp25 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 6 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp25, align 1
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%tmp29 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 7 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp29, align 1
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%tmp33 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 8 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp33, align 1
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%tmp37 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 9 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp37, align 1
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%tmp41 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 10 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp41, align 1
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%tmp45 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 11 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp45, align 1
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%tmp49 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 12 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp49, align 1
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%tmp53 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 13 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp53, align 1
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%tmp57 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 14 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp57, align 1
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%tmp61 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 15 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp61, align 1
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%tmp65 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 16 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp65, align 1
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%tmp69 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 17 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp69, align 1
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%tmp73 = getelementptr [19 x i8], [19 x i8]* %x, i32 0, i32 18 ; <i8*> [#uses=1]
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store i8 %c, i8* %tmp73, align 1
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%tmp76 = call i32 (...) @bar( [19 x i8]* %x ) nounwind
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ret void
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; CHECK-LABEL: @test1(
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; CHECK-NOT: store
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; CHECK: call void @llvm.memset.p0i8.i64
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; CHECK-NOT: store
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; CHECK: ret
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}
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declare i32 @bar(...)
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%struct.MV = type { i16, i16 }
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define void @test2() nounwind {
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entry:
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%ref_idx = alloca [8 x i8] ; <[8 x i8]*> [#uses=8]
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%left_mvd = alloca [8 x %struct.MV] ; <[8 x %struct.MV]*> [#uses=17]
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%up_mvd = alloca [8 x %struct.MV] ; <[8 x %struct.MV]*> [#uses=17]
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%tmp20 = getelementptr [8 x i8], [8 x i8]* %ref_idx, i32 0, i32 7 ; <i8*> [#uses=1]
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store i8 -1, i8* %tmp20, align 1
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%tmp23 = getelementptr [8 x i8], [8 x i8]* %ref_idx, i32 0, i32 6 ; <i8*> [#uses=1]
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store i8 -1, i8* %tmp23, align 1
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%tmp26 = getelementptr [8 x i8], [8 x i8]* %ref_idx, i32 0, i32 5 ; <i8*> [#uses=1]
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store i8 -1, i8* %tmp26, align 1
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%tmp29 = getelementptr [8 x i8], [8 x i8]* %ref_idx, i32 0, i32 4 ; <i8*> [#uses=1]
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store i8 -1, i8* %tmp29, align 1
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%tmp32 = getelementptr [8 x i8], [8 x i8]* %ref_idx, i32 0, i32 3 ; <i8*> [#uses=1]
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store i8 -1, i8* %tmp32, align 1
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%tmp35 = getelementptr [8 x i8], [8 x i8]* %ref_idx, i32 0, i32 2 ; <i8*> [#uses=1]
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store i8 -1, i8* %tmp35, align 1
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%tmp38 = getelementptr [8 x i8], [8 x i8]* %ref_idx, i32 0, i32 1 ; <i8*> [#uses=1]
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store i8 -1, i8* %tmp38, align 1
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%tmp41 = getelementptr [8 x i8], [8 x i8]* %ref_idx, i32 0, i32 0 ; <i8*> [#uses=2]
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store i8 -1, i8* %tmp41, align 1
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%tmp43 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 7, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp43, align 2
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%tmp46 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 7, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp46, align 2
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%tmp57 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 6, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp57, align 2
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%tmp60 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 6, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp60, align 2
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%tmp71 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 5, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp71, align 2
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%tmp74 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 5, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp74, align 2
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%tmp85 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 4, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp85, align 2
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%tmp88 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 4, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp88, align 2
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%tmp99 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 3, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp99, align 2
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%tmp102 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 3, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp102, align 2
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%tmp113 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 2, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp113, align 2
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%tmp116 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 2, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp116, align 2
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%tmp127 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 1, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp127, align 2
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%tmp130 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 1, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp130, align 2
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%tmp141 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 0, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp141, align 8
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%tmp144 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 0, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp144, align 2
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%tmp148 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 7, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp148, align 2
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%tmp151 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 7, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp151, align 2
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%tmp162 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 6, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp162, align 2
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%tmp165 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 6, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp165, align 2
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%tmp176 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 5, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp176, align 2
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%tmp179 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 5, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp179, align 2
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%tmp190 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 4, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp190, align 2
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%tmp193 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 4, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp193, align 2
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%tmp204 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 3, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp204, align 2
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%tmp207 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 3, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp207, align 2
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%tmp218 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 2, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp218, align 2
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%tmp221 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 2, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp221, align 2
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%tmp232 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 1, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp232, align 2
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%tmp235 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 1, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp235, align 2
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%tmp246 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 0, i32 0 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp246, align 8
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%tmp249 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 0, i32 1 ; <i16*> [#uses=1]
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store i16 0, i16* %tmp249, align 2
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%up_mvd252 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %up_mvd, i32 0, i32 0 ; <%struct.MV*> [#uses=1]
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%left_mvd253 = getelementptr [8 x %struct.MV], [8 x %struct.MV]* %left_mvd, i32 0, i32 0 ; <%struct.MV*> [#uses=1]
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call void @foo( %struct.MV* %up_mvd252, %struct.MV* %left_mvd253, i8* %tmp41 ) nounwind
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ret void
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; CHECK-LABEL: @test2(
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; CHECK-NOT: store
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; CHECK: call void @llvm.memset.p0i8.i64(i8* align 1 %tmp41, i8 -1, i64 8, i1 false)
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; CHECK-NOT: store
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; CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 %0, i8 0, i64 32, i1 false)
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; CHECK-NOT: store
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 8 %1, i8 0, i64 32, i1 false)
|
|
; CHECK-NOT: store
|
|
; CHECK: ret
|
|
}
|
|
|
|
declare void @foo(%struct.MV*, %struct.MV*, i8*)
|
|
|
|
|
|
; Store followed by memset.
|
|
define void @test3(i32* nocapture %P) nounwind ssp {
|
|
entry:
|
|
%arrayidx = getelementptr inbounds i32, i32* %P, i64 1
|
|
store i32 0, i32* %arrayidx, align 4
|
|
%add.ptr = getelementptr inbounds i32, i32* %P, i64 2
|
|
%0 = bitcast i32* %add.ptr to i8*
|
|
tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 11, i1 false)
|
|
ret void
|
|
; CHECK-LABEL: @test3(
|
|
; CHECK-NOT: store
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %1, i8 0, i64 15, i1 false)
|
|
}
|
|
|
|
; store followed by memset, different offset scenario
|
|
define void @test4(i32* nocapture %P) nounwind ssp {
|
|
entry:
|
|
store i32 0, i32* %P, align 4
|
|
%add.ptr = getelementptr inbounds i32, i32* %P, i64 1
|
|
%0 = bitcast i32* %add.ptr to i8*
|
|
tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 11, i1 false)
|
|
ret void
|
|
; CHECK-LABEL: @test4(
|
|
; CHECK-NOT: store
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %1, i8 0, i64 15, i1 false)
|
|
}
|
|
|
|
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) nounwind
|
|
|
|
; Memset followed by store.
|
|
define void @test5(i32* nocapture %P) nounwind ssp {
|
|
entry:
|
|
%add.ptr = getelementptr inbounds i32, i32* %P, i64 2
|
|
%0 = bitcast i32* %add.ptr to i8*
|
|
tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 11, i1 false)
|
|
%arrayidx = getelementptr inbounds i32, i32* %P, i64 1
|
|
store i32 0, i32* %arrayidx, align 4
|
|
ret void
|
|
; CHECK-LABEL: @test5(
|
|
; CHECK-NOT: store
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %1, i8 0, i64 15, i1 false)
|
|
}
|
|
|
|
;; Memset followed by memset.
|
|
define void @test6(i32* nocapture %P) nounwind ssp {
|
|
entry:
|
|
%0 = bitcast i32* %P to i8*
|
|
tail call void @llvm.memset.p0i8.i64(i8* %0, i8 0, i64 12, i1 false)
|
|
%add.ptr = getelementptr inbounds i32, i32* %P, i64 3
|
|
%1 = bitcast i32* %add.ptr to i8*
|
|
tail call void @llvm.memset.p0i8.i64(i8* %1, i8 0, i64 12, i1 false)
|
|
ret void
|
|
; CHECK-LABEL: @test6(
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %2, i8 0, i64 24, i1 false)
|
|
}
|
|
|
|
; More aggressive heuristic
|
|
; rdar://9892684
|
|
define void @test7(i32* nocapture %c) nounwind optsize {
|
|
store i32 -1, i32* %c, align 4
|
|
%1 = getelementptr inbounds i32, i32* %c, i32 1
|
|
store i32 -1, i32* %1, align 4
|
|
%2 = getelementptr inbounds i32, i32* %c, i32 2
|
|
store i32 -1, i32* %2, align 4
|
|
%3 = getelementptr inbounds i32, i32* %c, i32 3
|
|
store i32 -1, i32* %3, align 4
|
|
%4 = getelementptr inbounds i32, i32* %c, i32 4
|
|
store i32 -1, i32* %4, align 4
|
|
; CHECK-LABEL: @test7(
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %5, i8 -1, i64 20, i1 false)
|
|
ret void
|
|
}
|
|
|
|
%struct.test8 = type { [4 x i32] }
|
|
|
|
define void @test8() {
|
|
entry:
|
|
%memtmp = alloca %struct.test8, align 16
|
|
%0 = bitcast %struct.test8* %memtmp to <4 x i32>*
|
|
store <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, <4 x i32>* %0, align 16
|
|
ret void
|
|
; CHECK-LABEL: @test8(
|
|
; CHECK: store <4 x i32> <i32 -1, i32 -1, i32 -1, i32 -1>, <4 x i32>* %0, align 16
|
|
}
|
|
|
|
@test9buf = internal unnamed_addr global [16 x i64] zeroinitializer, align 16
|
|
|
|
define void @test9() nounwind {
|
|
store i8 -1, i8* bitcast ([16 x i64]* @test9buf to i8*), align 16
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 1), align 1
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 2), align 2
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 3), align 1
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 4), align 4
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 5), align 1
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 6), align 2
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 7), align 1
|
|
store i8 -1, i8* bitcast (i64* getelementptr inbounds ([16 x i64], [16 x i64]* @test9buf, i64 0, i64 1) to i8*), align 8
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 9), align 1
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 10), align 2
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 11), align 1
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 12), align 4
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 13), align 1
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 14), align 2
|
|
store i8 -1, i8* getelementptr (i8, i8* bitcast ([16 x i64]* @test9buf to i8*), i64 15), align 1
|
|
ret void
|
|
; CHECK-LABEL: @test9(
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 16 bitcast ([16 x i64]* @test9buf to i8*), i8 -1, i64 16, i1 false)
|
|
}
|
|
|
|
; PR19092
|
|
define void @test10(i8* nocapture %P) nounwind {
|
|
tail call void @llvm.memset.p0i8.i64(i8* %P, i8 0, i64 42, i1 false)
|
|
tail call void @llvm.memset.p0i8.i64(i8* %P, i8 0, i64 23, i1 false)
|
|
ret void
|
|
; CHECK-LABEL: @test10(
|
|
; CHECK-NOT: memset
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 1 %P, i8 0, i64 42, i1 false)
|
|
; CHECK-NOT: memset
|
|
; CHECK: ret void
|
|
}
|
|
|
|
; Memset followed by odd store.
|
|
define void @test11(i32* nocapture %P) nounwind ssp {
|
|
entry:
|
|
%add.ptr = getelementptr inbounds i32, i32* %P, i64 3
|
|
%0 = bitcast i32* %add.ptr to i8*
|
|
tail call void @llvm.memset.p0i8.i64(i8* %0, i8 1, i64 11, i1 false)
|
|
%arrayidx = getelementptr inbounds i32, i32* %P, i64 0
|
|
%arrayidx.cast = bitcast i32* %arrayidx to i96*
|
|
store i96 310698676526526814092329217, i96* %arrayidx.cast, align 4
|
|
ret void
|
|
; CHECK-LABEL: @test11(
|
|
; CHECK-NOT: store
|
|
; CHECK: call void @llvm.memset.p0i8.i64(i8* align 4 %1, i8 1, i64 23, i1 false)
|
|
}
|