[LLVMdev] problem with sgt's on Sparc machine

[Christine Cheng]

Hi,

I compiled the following code on a Sparc machine, basically it produce
different results than a X86 machine.

-------------------------------------------------------------------------------------------------------------------
; MduleID = '<stdin>'
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-n8:16:32"
target triple = "i386-pc-linux-gnu"

@P = global i32 1
@dP = global i32 1

@.str = private constant [4 x i8] c"%d\0A\00", align 1

define i32 @main() nounwind {

entry:
    %. = load i32* @P, align 4
    %t1 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr
inbounds ([4 x i8]* @.str, i32 0, i32 0), i32 %. ) nounwind
    %d. = load i32* @dP, align 4
    %t2 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr
inbounds ([4 x i8]* @.str, i32 0, i32 0), i32 %d. ) nounwind
    %0 = icmp sgt i32 %., 0
  %1 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr inbounds
([4 x i8]* @.str, i32 0, i32 0), i1 %0 ) nounwind
    %2 = icmp sgt i32 %d., 0
    %3 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr
inbounds ([4 x i8]* @.str, i32 0, i32 0), i1 %2 ) nounwind
    %t3 = icmp eq i32 %d., %d.
    %t4 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr
inbounds ([4 x i8]* @.str, i32 0, i32 0), i1 %t3 ) nounwind
    %4 = icmp sgt i32 1, 0
    %5 = icmp sgt i32 1, 0
    %6 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr
inbounds ([4 x i8]* @.str, i32 0, i32 0), i1 %4 ) nounwind
    %7 = tail call i32 (i8*, ...)* @printf(i8* noalias getelementptr
inbounds ([4 x i8]* @.str, i32 0, i32 0), i1 %5 ) nounwind
  ret i32 undef
}

declare i32 @printf(i8* nocapture, ...) nounwind
-------------------------------------------------------------------------------------------------------------------

On Sparc I get:
1
1
0
0
1
1
1

On X86 I get all 1's which I believe is correct.

I used the following command to compile on sparc:
llc -march=sparc llvm_print.bc -o llvm_print.s   ( on a x86 machine)
/usr/sfw/bin/gcc -mcpu=v9 -mtune=v9 llvm_print.s -o llvm_print  (on sparc)


Could anyone give me some clue about what's going on? Is 'sgt' not working
for loaded values?

Thanks,

Christine
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