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llvm-project/llvm/test/ExecutionEngine/2007-12-10-APIntLoadStore.ll

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Adding a basic ELF dynamic loader and MC-JIT for ELF. Functionality is currently basic and will be enhanced with future patches. Patch developed by Andy Kaylor and Daniel Malea. Reviewed on llvm-commits. llvm-svn: 148231
2012-01-16 16:56:09 +08:00
; RUN: %lli -force-interpreter %s
Fix PR1836: in the interpreter, read and write apints using the minimum possible number of bytes. For little endian targets run on little endian machines, apints are stored in memory from LSB to MSB as before. For big endian targets on big endian machines they are stored from MSB to LSB which wasn't always the case before (if the target and host endianness doesn't match values are stored according to the host's endianness). Doing this requires knowing the endianness of the host, which is determined when configuring - thanks go to Anton for this. Only having access to little endian machines I was unable to properly test the big endian part, which is also the most complicated... llvm-svn: 44796
2007-12-11 01:43:13 +08:00
; PR1836
define i32 @main() {
entry:
%retval = alloca i32 ; <i32*> [#uses=2]
%tmp = alloca i32 ; <i32*> [#uses=2]
%x = alloca i75, align 16 ; <i75*> [#uses=1]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store i75 999, i75* %x, align 16
store i32 0, i32* %tmp, align 4
%tmp1 = load i32* %tmp, align 4 ; <i32> [#uses=1]
store i32 %tmp1, i32* %retval, align 4
br label %return
return: ; preds = %entry
%retval2 = load i32* %retval ; <i32> [#uses=1]
ret i32 %retval2
}