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Add a bunch of new tests

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5730 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-03-10 19:16:20 +00:00
parent ea34005404
commit c232870b6f
1 changed files with 30 additions and 0 deletions
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30
test/Transforms/InstCombine/shift.ll
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@ -33,6 +33,11 @@ uint %test5(uint %A) {
ret uint %B
}
uint %test5a(uint %A) {
%B = shl uint %A, ubyte 32 ;; shift all bits out
ret uint %B
}
uint %test6(uint %A) {
%B = shl uint %A, ubyte 1 ;; convert to an add instruction
ret uint %B
@ -42,3 +47,28 @@ int %test7(ubyte %A) {
%B = shr int -1, ubyte %A ;; Always equal to -1
ret int %B
}
ubyte %test8(ubyte %A) { ;; (A << 5) << 3 === A << 8 == 0
%B = shl ubyte %A, ubyte 5
%C = shl ubyte %B, ubyte 3
ret ubyte %C
}
ubyte %test9(ubyte %A) { ;; (A << 7) >> 7 === A & 1
%B = shl ubyte %A, ubyte 7
%C = shr ubyte %B, ubyte 7
ret ubyte %C
}
ubyte %test10(ubyte %A) { ;; (A >> 7) << 7 === A & 128
%B = shr ubyte %A, ubyte 7
%C = shl ubyte %B, ubyte 7
ret ubyte %C
}
ubyte %test11(ubyte %A) { ;; (A >> 3) << 4 == (A & 0x1F) << 1
%B = shr ubyte %A, ubyte 3
%C = shl ubyte %B, ubyte 4
ret ubyte %C
}