Factor a bunch of functionality related to memcpy and memset transforms out of

GVN and into its own pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49419 91177308-0d34-0410-b5e6-96231b3b80d8

7 files changed, 260 insertions, 0 deletions

diff --git a/test/Transforms/MemCpyOpt/2008-02-24-MultipleUseofSRet.ll b/test/Transforms/MemCpyOpt/2008-02-24-MultipleUseofSRet.ll
new file mode 100644
index 0000000000..30d0a6dbeb
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/2008-02-24-MultipleUseofSRet.ll
@@ -0,0 +1,34 @@
+; RUN: llvm-as < %s | opt -memcpyopt -dse | llvm-dis | grep {call.*initialize} | not grep memtmp
+; PR2077
+
+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-f80:32:32"
+target triple = "i386-pc-linux-gnu"
+
+define internal fastcc void @initialize({ x86_fp80, x86_fp80 }* noalias sret  %agg.result) nounwind  {
+entry:
+	%agg.result.03 = getelementptr { x86_fp80, x86_fp80 }* %agg.result, i32 0, i32 0		; <x86_fp80*> [#uses=1]
+	store x86_fp80 0xK00000000000000000000, x86_fp80* %agg.result.03
+	%agg.result.15 = getelementptr { x86_fp80, x86_fp80 }* %agg.result, i32 0, i32 1		; <x86_fp80*> [#uses=1]
+	store x86_fp80 0xK00000000000000000000, x86_fp80* %agg.result.15
+	ret void
+}
+
+declare fastcc x86_fp80 @passed_uninitialized({ x86_fp80, x86_fp80 }* %x) nounwind
+
+define fastcc void @badly_optimized() nounwind  {
+entry:
+	%z = alloca { x86_fp80, x86_fp80 }		; <{ x86_fp80, x86_fp80 }*> [#uses=2]
+	%tmp = alloca { x86_fp80, x86_fp80 }		; <{ x86_fp80, x86_fp80 }*> [#uses=2]
+	%memtmp = alloca { x86_fp80, x86_fp80 }, align 8		; <{ x86_fp80, x86_fp80 }*> [#uses=2]
+	call fastcc void @initialize( { x86_fp80, x86_fp80 }* noalias sret  %memtmp )
+	%tmp1 = bitcast { x86_fp80, x86_fp80 }* %tmp to i8*		; <i8*> [#uses=1]
+	%memtmp2 = bitcast { x86_fp80, x86_fp80 }* %memtmp to i8*		; <i8*> [#uses=1]
+	call void @llvm.memcpy.i32( i8* %tmp1, i8* %memtmp2, i32 24, i32 8 )
+	%z3 = bitcast { x86_fp80, x86_fp80 }* %z to i8*		; <i8*> [#uses=1]
+	%tmp4 = bitcast { x86_fp80, x86_fp80 }* %tmp to i8*		; <i8*> [#uses=1]
+	call void @llvm.memcpy.i32( i8* %z3, i8* %tmp4, i32 24, i32 8 )
+	%tmp5 = call fastcc x86_fp80 @passed_uninitialized( { x86_fp80, x86_fp80 }* %z )		; <x86_fp80> [#uses=0]
+	ret void
+}
+
+declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) nounwind
diff --git a/test/Transforms/MemCpyOpt/2008-03-13-ReturnSlotBitcast.ll b/test/Transforms/MemCpyOpt/2008-03-13-ReturnSlotBitcast.ll
new file mode 100644
index 0000000000..12c9a9d23e
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/2008-03-13-ReturnSlotBitcast.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | opt -memcpyopt | llvm-dis | not grep {call.*memcpy.}
+	%a = type { i32 }
+	%b = type { float }
+
+declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) nounwind 
+declare void @g(%a*)
+
+define float @f() {
+entry:
+	%a_var = alloca %a
+	%b_var = alloca %b
+	call void @g(%a *%a_var)
+	%a_i8 = bitcast %a* %a_var to i8*
+	%b_i8 = bitcast %b* %b_var to i8*
+	call void @llvm.memcpy.i32(i8* %b_i8, i8* %a_i8, i32 4, i32 4)
+	%tmp1 = getelementptr %b* %b_var, i32 0, i32 0
+	%tmp2 = load float* %tmp1
+	ret float %tmp2
+}
diff --git a/test/Transforms/MemCpyOpt/dg.exp b/test/Transforms/MemCpyOpt/dg.exp
new file mode 100644
index 0000000000..879685ca87
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/dg.exp
@@ -0,0 +1,3 @@
+load_lib llvm.exp
+
+RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.{ll,llx,c,cpp,tr}]]
diff --git a/test/Transforms/MemCpyOpt/form-memset.ll b/test/Transforms/MemCpyOpt/form-memset.ll
new file mode 100644
index 0000000000..cdcd00697a
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/form-memset.ll
@@ -0,0 +1,55 @@
+; RUN: llvm-as < %s | opt -memcpyopt -form-memset-from-stores | llvm-dis | not grep store
+; RUN: llvm-as < %s | opt -memcpyopt -form-memset-from-stores | llvm-dis | grep {call.*llvm.memset}
+
+; All the stores in this example should be merged into a single memset.
+
+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"
+target triple = "i386-apple-darwin8"
+
+define void @foo(i8 signext  %c) nounwind  {
+entry:
+	%x = alloca [19 x i8]		; <[19 x i8]*> [#uses=20]
+	%tmp = getelementptr [19 x i8]* %x, i32 0, i32 0		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp, align 1
+	%tmp5 = getelementptr [19 x i8]* %x, i32 0, i32 1		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp5, align 1
+	%tmp9 = getelementptr [19 x i8]* %x, i32 0, i32 2		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp9, align 1
+	%tmp13 = getelementptr [19 x i8]* %x, i32 0, i32 3		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp13, align 1
+	%tmp17 = getelementptr [19 x i8]* %x, i32 0, i32 4		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp17, align 1
+	%tmp21 = getelementptr [19 x i8]* %x, i32 0, i32 5		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp21, align 1
+	%tmp25 = getelementptr [19 x i8]* %x, i32 0, i32 6		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp25, align 1
+	%tmp29 = getelementptr [19 x i8]* %x, i32 0, i32 7		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp29, align 1
+	%tmp33 = getelementptr [19 x i8]* %x, i32 0, i32 8		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp33, align 1
+	%tmp37 = getelementptr [19 x i8]* %x, i32 0, i32 9		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp37, align 1
+	%tmp41 = getelementptr [19 x i8]* %x, i32 0, i32 10		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp41, align 1
+	%tmp45 = getelementptr [19 x i8]* %x, i32 0, i32 11		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp45, align 1
+	%tmp49 = getelementptr [19 x i8]* %x, i32 0, i32 12		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp49, align 1
+	%tmp53 = getelementptr [19 x i8]* %x, i32 0, i32 13		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp53, align 1
+	%tmp57 = getelementptr [19 x i8]* %x, i32 0, i32 14		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp57, align 1
+	%tmp61 = getelementptr [19 x i8]* %x, i32 0, i32 15		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp61, align 1
+	%tmp65 = getelementptr [19 x i8]* %x, i32 0, i32 16		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp65, align 1
+	%tmp69 = getelementptr [19 x i8]* %x, i32 0, i32 17		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp69, align 1
+	%tmp73 = getelementptr [19 x i8]* %x, i32 0, i32 18		; <i8*> [#uses=1]
+	store i8 %c, i8* %tmp73, align 1
+	%tmp76 = call i32 (...)* @bar( [19 x i8]* %x ) nounwind 		; <i32> [#uses=0]
+	ret void
+}
+
+declare i32 @bar(...)
+
diff --git a/test/Transforms/MemCpyOpt/form-memset2.ll b/test/Transforms/MemCpyOpt/form-memset2.ll
new file mode 100644
index 0000000000..46eb6b479d
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/form-memset2.ll
@@ -0,0 +1,99 @@
+; RUN: llvm-as < %s | opt -memcpyopt -form-memset-from-stores | llvm-dis | not grep store
+; RUN: llvm-as < %s | opt -memcpyopt -form-memset-from-stores | llvm-dis | grep {call.*llvm.memset} | count 3
+
+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"
+target triple = "i386-apple-darwin8"
+	%struct.MV = type { i16, i16 }
+
+define i32 @t() nounwind  {
+entry:
+	%ref_idx = alloca [8 x i8]		; <[8 x i8]*> [#uses=8]
+	%left_mvd = alloca [8 x %struct.MV]		; <[8 x %struct.MV]*> [#uses=17]
+	%up_mvd = alloca [8 x %struct.MV]		; <[8 x %struct.MV]*> [#uses=17]
+	%tmp20 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 7		; <i8*> [#uses=1]
+	store i8 -1, i8* %tmp20, align 1
+	%tmp23 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 6		; <i8*> [#uses=1]
+	store i8 -1, i8* %tmp23, align 1
+	%tmp26 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 5		; <i8*> [#uses=1]
+	store i8 -1, i8* %tmp26, align 1
+	%tmp29 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 4		; <i8*> [#uses=1]
+	store i8 -1, i8* %tmp29, align 1
+	%tmp32 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 3		; <i8*> [#uses=1]
+	store i8 -1, i8* %tmp32, align 1
+	%tmp35 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 2		; <i8*> [#uses=1]
+	store i8 -1, i8* %tmp35, align 1
+	%tmp38 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 1		; <i8*> [#uses=1]
+	store i8 -1, i8* %tmp38, align 1
+	%tmp41 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 0		; <i8*> [#uses=2]
+	store i8 -1, i8* %tmp41, align 1
+	%tmp43 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 7, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp43, align 2
+	%tmp46 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 7, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp46, align 2
+	%tmp57 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 6, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp57, align 2
+	%tmp60 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 6, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp60, align 2
+	%tmp71 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 5, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp71, align 2
+	%tmp74 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 5, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp74, align 2
+	%tmp85 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 4, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp85, align 2
+	%tmp88 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 4, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp88, align 2
+	%tmp99 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 3, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp99, align 2
+	%tmp102 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 3, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp102, align 2
+	%tmp113 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 2, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp113, align 2
+	%tmp116 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 2, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp116, align 2
+	%tmp127 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 1, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp127, align 2
+	%tmp130 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 1, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp130, align 2
+	%tmp141 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 0, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp141, align 8
+	%tmp144 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 0, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp144, align 2
+	%tmp148 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 7, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp148, align 2
+	%tmp151 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 7, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp151, align 2
+	%tmp162 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 6, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp162, align 2
+	%tmp165 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 6, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp165, align 2
+	%tmp176 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 5, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp176, align 2
+	%tmp179 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 5, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp179, align 2
+	%tmp190 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 4, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp190, align 2
+	%tmp193 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 4, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp193, align 2
+	%tmp204 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 3, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp204, align 2
+	%tmp207 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 3, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp207, align 2
+	%tmp218 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 2, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp218, align 2
+	%tmp221 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 2, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp221, align 2
+	%tmp232 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 1, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp232, align 2
+	%tmp235 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 1, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp235, align 2
+	%tmp246 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 0, i32 0		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp246, align 8
+	%tmp249 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 0, i32 1		; <i16*> [#uses=1]
+	store i16 0, i16* %tmp249, align 2
+	%up_mvd252 = getelementptr [8 x %struct.MV]* %up_mvd, i32 0, i32 0		; <%struct.MV*> [#uses=1]
+	%left_mvd253 = getelementptr [8 x %struct.MV]* %left_mvd, i32 0, i32 0		; <%struct.MV*> [#uses=1]
+	call void @foo( %struct.MV* %up_mvd252, %struct.MV* %left_mvd253, i8* %tmp41 ) nounwind 
+	ret i32 undef
+}
+
+declare void @foo(%struct.MV*, %struct.MV*, i8*)
diff --git a/test/Transforms/MemCpyOpt/memcpy.ll b/test/Transforms/MemCpyOpt/memcpy.ll
new file mode 100644
index 0000000000..c5cdc29a5c
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/memcpy.ll
@@ -0,0 +1,22 @@
+; RUN: llvm-as < %s | opt -memcpyopt -dse | llvm-dis | grep {call.*memcpy} | count 1
+
+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"
+target triple = "i686-apple-darwin9"
+
+define void @ccosl({ x86_fp80, x86_fp80 }* sret  %agg.result, x86_fp80 %z.0, x86_fp80 %z.1) nounwind  {
+entry:
+	%tmp2 = alloca { x86_fp80, x86_fp80 }		; <{ x86_fp80, x86_fp80 }*> [#uses=1]
+	%memtmp = alloca { x86_fp80, x86_fp80 }, align 16		; <{ x86_fp80, x86_fp80 }*> [#uses=2]
+	%tmp5 = sub x86_fp80 0xK80000000000000000000, %z.1		; <x86_fp80> [#uses=1]
+	call void @ccoshl( { x86_fp80, x86_fp80 }* sret  %memtmp, x86_fp80 %tmp5, x86_fp80 %z.0 ) nounwind 
+	%tmp219 = bitcast { x86_fp80, x86_fp80 }* %tmp2 to i8*		; <i8*> [#uses=2]
+	%memtmp20 = bitcast { x86_fp80, x86_fp80 }* %memtmp to i8*		; <i8*> [#uses=1]
+	call void @llvm.memcpy.i32( i8* %tmp219, i8* %memtmp20, i32 32, i32 16 )
+	%agg.result21 = bitcast { x86_fp80, x86_fp80 }* %agg.result to i8*		; <i8*> [#uses=1]
+	call void @llvm.memcpy.i32( i8* %agg.result21, i8* %tmp219, i32 32, i32 16 )
+	ret void
+}
+
+declare void @ccoshl({ x86_fp80, x86_fp80 }* sret , x86_fp80, x86_fp80) nounwind 
+
+declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) nounwind 
diff --git a/test/Transforms/MemCpyOpt/sret.ll b/test/Transforms/MemCpyOpt/sret.ll
new file mode 100644
index 0000000000..1ac11aa959
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/sret.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-as < %s | opt -memcpyopt | llvm-dis | not grep {call.*memcpy}
+
+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"
+target triple = "i686-apple-darwin9"
+
+define void @ccosl({ x86_fp80, x86_fp80 }* noalias sret  %agg.result, { x86_fp80, x86_fp80 }* byval  %z) nounwind  {
+entry:
+	%iz = alloca { x86_fp80, x86_fp80 }		; <{ x86_fp80, x86_fp80 }*> [#uses=3]
+	%memtmp = alloca { x86_fp80, x86_fp80 }, align 16		; <{ x86_fp80, x86_fp80 }*> [#uses=2]
+	%tmp1 = getelementptr { x86_fp80, x86_fp80 }* %z, i32 0, i32 1		; <x86_fp80*> [#uses=1]
+	%tmp2 = load x86_fp80* %tmp1, align 16		; <x86_fp80> [#uses=1]
+	%tmp3 = sub x86_fp80 0xK80000000000000000000, %tmp2		; <x86_fp80> [#uses=1]
+	%tmp4 = getelementptr { x86_fp80, x86_fp80 }* %iz, i32 0, i32 1		; <x86_fp80*> [#uses=1]
+	%real = getelementptr { x86_fp80, x86_fp80 }* %iz, i32 0, i32 0		; <x86_fp80*> [#uses=1]
+	%tmp7 = getelementptr { x86_fp80, x86_fp80 }* %z, i32 0, i32 0		; <x86_fp80*> [#uses=1]
+	%tmp8 = load x86_fp80* %tmp7, align 16		; <x86_fp80> [#uses=1]
+	store x86_fp80 %tmp3, x86_fp80* %real, align 16
+	store x86_fp80 %tmp8, x86_fp80* %tmp4, align 16
+	call void @ccoshl( { x86_fp80, x86_fp80 }* noalias sret  %memtmp, { x86_fp80, x86_fp80 }* byval  %iz ) nounwind 
+	%memtmp14 = bitcast { x86_fp80, x86_fp80 }* %memtmp to i8*		; <i8*> [#uses=1]
+	%agg.result15 = bitcast { x86_fp80, x86_fp80 }* %agg.result to i8*		; <i8*> [#uses=1]
+	call void @llvm.memcpy.i32( i8* %agg.result15, i8* %memtmp14, i32 32, i32 16 )
+	ret void
+}
+
+declare void @ccoshl({ x86_fp80, x86_fp80 }* noalias sret , { x86_fp80, x86_fp80 }* byval ) nounwind 
+
+declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) nounwind