Test for PR2401

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51849 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/MemCpyOpt/2008-06-01-MemCpy-MemMove.ll b/test/Transforms/MemCpyOpt/2008-06-01-MemCpy-MemMove.ll
new file mode 100644 (file)
index 0000000..5980209
--- /dev/null
+++ b/test/Transforms/MemCpyOpt/2008-06-01-MemCpy-MemMove.ll
@@ -0,0 +1,107 @@
+; RUN: llvm-as < %s | opt -memcpyopt | llvm-dis | grep {call.*memcpy.*}
+; PR2401
+
+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 = "i686-pc-linux-gnu"
+       %struct.Info = type <{ i32, i32, i8*, i8*, i8*, [32 x i8*], i32, [32 x i32], i32, i32, i32, [32 x i32] }>
+       %struct.S98 = type <{ [31 x double] }>
+       %struct._IO_FILE = type <{ i32, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, %struct._IO_marker*, %struct._IO_FILE*, i32, i32, i32, i16, i8, [1 x i8], i8*, i64, i8*, i8*, i8*, i8*, i32, i32, [40 x i8] }>
+       %struct._IO_marker = type <{ %struct._IO_marker*, %struct._IO_FILE*, i32 }>
+       %struct.anon = type <{  }>
+       %union.anon = type {  }
+@info = common global %struct.Info zeroinitializer, align 4            ; <%struct.Info*> [#uses=13]
+@fails = common global i32 0, align 4          ; <i32*> [#uses=37]
+@s98 = common global %struct.S98 zeroinitializer, align 4              ; <%struct.S98*> [#uses=2]
+@a98 = common global [5 x %struct.S98] zeroinitializer, align 4                ; <[5 x %struct.S98]*> [#uses=5]
+@stdout = external global %struct._IO_FILE*            ; <%struct._IO_FILE**> [#uses=1]
+
+declare void @llvm.memmove.i32(i8*, i8*, i32, i32) nounwind 
+
+define void @test98() nounwind  {
+entry:
+       %arg = alloca %struct.S98, align 8              ; <%struct.S98*> [#uses=2]
+       %tmp13 = alloca %struct.S98             ; <%struct.S98*> [#uses=2]
+       %tmp14 = alloca %struct.S98             ; <%struct.S98*> [#uses=2]
+       %tmp15 = alloca %struct.S98             ; <%struct.S98*> [#uses=2]
+       %tmp17 = alloca %struct.S98             ; <%struct.S98*> [#uses=2]
+       %tmp21 = alloca %struct.S98             ; <%struct.S98*> [#uses=0]
+       %tmp23 = alloca %struct.S98             ; <%struct.S98*> [#uses=0]
+       %tmp25 = alloca %struct.S98             ; <%struct.S98*> [#uses=0]
+       %tmp27 = alloca %struct.S98             ; <%struct.S98*> [#uses=0]
+       %tmp29 = alloca %struct.S98             ; <%struct.S98*> [#uses=0]
+       %tmp31 = alloca %struct.S98             ; <%struct.S98*> [#uses=0]
+       %tmp33 = alloca %struct.S98             ; <%struct.S98*> [#uses=0]
+       call void @llvm.memset.i32( i8* bitcast (%struct.S98* @s98 to i8*), i8 0, i32 248, i32 4 )
+       call void @llvm.memset.i32( i8* bitcast ([5 x %struct.S98]* @a98 to i8*), i8 0, i32 1240, i32 4 )
+       call void @llvm.memset.i32( i8* bitcast (%struct.Info* @info to i8*), i8 0, i32 420, i32 4 )
+       store i8* bitcast (%struct.S98* @s98 to i8*), i8** getelementptr (%struct.Info* @info, i32 0, i32 2)
+       store i8* bitcast ([5 x %struct.S98]* @a98 to i8*), i8** getelementptr (%struct.Info* @info, i32 0, i32 3)
+       store i8* bitcast (%struct.S98* getelementptr ([5 x %struct.S98]* @a98, i32 0, i32 3) to i8*), i8** getelementptr (%struct.Info* @info, i32 0, i32 4)
+       store i32 248, i32* getelementptr (%struct.Info* @info, i32 0, i32 6)
+       store i32 4, i32* getelementptr (%struct.Info* @info, i32 0, i32 8)
+       store i32 4, i32* getelementptr (%struct.Info* @info, i32 0, i32 9)
+       store i32 4, i32* getelementptr (%struct.Info* @info, i32 0, i32 10)
+       %tmp = load i32* getelementptr (%struct.Info* @info, i32 0, i32 8)              ; <i32> [#uses=1]
+       %sub = add i32 %tmp, -1         ; <i32> [#uses=1]
+       %and = and i32 %sub, ptrtoint (%struct.S98* getelementptr ([5 x %struct.S98]* @a98, i32 0, i32 3) to i32)               ; <i32> [#uses=1]
+       %tobool = icmp eq i32 %and, 0           ; <i1> [#uses=1]
+       br i1 %tobool, label %ifend, label %ifthen
+
+ifthen:                ; preds = %entry
+       %tmp3 = load i32* @fails                ; <i32> [#uses=1]
+       %inc = add i32 %tmp3, 1         ; <i32> [#uses=1]
+       store i32 %inc, i32* @fails
+       br label %ifend
+
+ifend:         ; preds = %ifthen, %entry
+       store i8* bitcast (double* getelementptr (%struct.S98* @s98, i32 0, i32 0, i32 18) to i8*), i8** getelementptr (%struct.Info* @info, i32 0, i32 5, i32 0)
+       store i32 8, i32* getelementptr (%struct.Info* @info, i32 0, i32 7, i32 0)
+       store i32 4, i32* getelementptr (%struct.Info* @info, i32 0, i32 11, i32 0)
+       store double 0xC1075E4620000000, double* getelementptr (%struct.S98* @s98, i32 0, i32 0, i32 18)
+       store double 0x410CD219E0000000, double* getelementptr ([5 x %struct.S98]* @a98, i32 0, i32 2, i32 0, i32 18)
+       store i32 1, i32* getelementptr (%struct.Info* @info, i32 0, i32 0)
+       store i32 0, i32* getelementptr (%struct.Info* @info, i32 0, i32 1)
+       %tmp16 = bitcast %struct.S98* %tmp15 to i8*             ; <i8*> [#uses=1]
+       call void @llvm.memmove.i32( i8* %tmp16, i8* bitcast (%struct.S98* @s98 to i8*), i32 248, i32 4 )
+       %tmp18 = bitcast %struct.S98* %tmp17 to i8*             ; <i8*> [#uses=1]
+       call void @llvm.memmove.i32( i8* %tmp18, i8* bitcast (%struct.S98* getelementptr ([5 x %struct.S98]* @a98, i32 0, i32 2) to i8*), i32 248, i32 4 )
+       call void @check98( %struct.S98* sret  %tmp14, %struct.S98* byval  %tmp15, %struct.S98* getelementptr ([5 x %struct.S98]* @a98, i32 0, i32 1), %struct.S98* byval  %tmp17 )
+       %tmp19 = bitcast %struct.S98* %tmp13 to i8*             ; <i8*> [#uses=1]
+       %tmp20 = bitcast %struct.S98* %tmp14 to i8*             ; <i8*> [#uses=1]
+       call void @llvm.memmove.i32( i8* %tmp19, i8* %tmp20, i32 248, i32 8 )
+       %tmp1 = bitcast %struct.S98* %arg to i8*                ; <i8*> [#uses=1]
+       %tmp2 = bitcast %struct.S98* %tmp13 to i8*              ; <i8*> [#uses=1]
+       call void @llvm.memcpy.i64( i8* %tmp1, i8* %tmp2, i64 248, i32 8 )
+       %arrayidx.i = getelementptr %struct.S98* %arg, i32 0, i32 0, i32 18             ; <double*> [#uses=1]
+       %tmp1.i = load double* %arrayidx.i, align 8             ; <double> [#uses=1]
+       %tmp2.i = load double* getelementptr (%struct.S98* @s98, i32 0, i32 0, i32 18)          ; <double> [#uses=1]
+       %cmp.i = fcmp une double %tmp1.i, %tmp2.i               ; <i1> [#uses=1]
+       br i1 %cmp.i, label %ifthen.i, label %checkx98.exit
+
+ifthen.i:              ; preds = %ifend
+       %tmp3.i = load i32* @fails              ; <i32> [#uses=1]
+       %inc.i = add i32 %tmp3.i, 1             ; <i32> [#uses=1]
+       store i32 %inc.i, i32* @fails
+       br label %checkx98.exit
+
+checkx98.exit:         ; preds = %ifthen.i, %ifend
+       ret void
+}
+
+declare void @check98(%struct.S98* sret  %agg.result, %struct.S98* byval  %arg0, %struct.S98* %arg1, %struct.S98* byval  %arg2) nounwind
+
+declare void @llvm.va_start(i8*) nounwind 
+
+declare void @llvm.va_end(i8*) nounwind 
+
+declare i32 @main() noreturn
+
+declare i32 @fflush(%struct._IO_FILE*)
+
+declare void @abort() noreturn nounwind 
+
+declare void @exit(i32) noreturn nounwind 
+
+declare void @llvm.memset.i32(i8*, i8, i32, i32) nounwind 
+
+declare void @llvm.memcpy.i64(i8*, i8*, i64, i32) nounwind