Hi,
I compiled the following code on a Sparc machine, basically it produce
different results than a X86 machine.
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; 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
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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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Hi,> 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"if you are using this target data layout and triple on a Sparc machine, I'm not surprised you get wrong results. Ciao, Duncan.> > @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 > > > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
Hi Duncan, Thanks for the reply! There is no LLVM on the Sparc machine so I cannot compile my code there into .s file. How shall I modify the target data layout and triple so it works on Sparc? Basically I got these from compiling C code using llvm-gcc. Best, Christine On Thu, Sep 15, 2011 at 10:20 AM, Duncan Sands <baldrick at free.fr> wrote:> Hi, > > > 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" > > if you are using this target data layout and triple on a Sparc machine, > I'm not surprised you get wrong results. > > Ciao, Duncan. > > > > > @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 > > > > > > > > _______________________________________________ > > LLVM Developers mailing list > > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20110915/79bde85e/attachment.html>