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Add a test case for sext bug that Leo found.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33393 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2007-01-20 08:31:45 +00:00
parent 30fe526817
commit 6df4c4576f
1 changed files with 29 additions and 0 deletions
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29
test/Integer/2007-01-19-TruncSext.ll Normal file
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; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
; RUN: diff %t1.ll %t2.ll
; RUN: llvm-as < %s | lli --force-interpreter=true | grep -- '-255'
%ARRAY = global [ 20 x i17 ] zeroinitializer
%FORMAT = constant [ 4 x i8 ] c"%d\0A\00"
declare i32 %printf(i8* %format, ...)
define void %multiply(i32 %index, i32 %X, i32 %Y) {
%Z = mul i32 %X, %Y
%P = getelementptr [20 x i17]* %ARRAY, i32 0, i32 %index
%Result = trunc i32 %Z to i17
store i17 %Result, i17* %P
ret void
}
define i32 %main(i32 %argc, i8** %argc) {
%i = bitcast i32 0 to i32
call void %multiply(i32 %i, i32 -1, i32 255)
%P = getelementptr [20 x i17]* %ARRAY, i32 0, i32 0
%X = load i17* %P
%result = sext i17 %X to i32
%fmt = getelementptr [4 x i8]* %FORMAT, i32 0, i32 0
call i32 (i8*,...)* %printf(i8* %fmt, i32 %result)
ret i32 %result
}