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* Break tests into individual cases so its easier to see what's going on.

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* Add four new cases to handle the new optimizations for strlen, dealing
  with:
    strlen(x) != 0 -> *x != 0
    strlen(x) == 0 -> *x == 0
  for each of two cases: strlen(x) != 0 and strlen(x) == 0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21767 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2005-05-07 20:21:04 +00:00
parent 789082af03
commit 29a5bf5f0f
1 changed files with 42 additions and 9 deletions
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51
test/Transforms/SimplifyLibCalls/StrLen.ll
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@ -8,15 +8,48 @@ declare uint %strlen(sbyte*)
implementation ; Functions:
int %main () {
uint %test1() {
%hello_p = getelementptr [6 x sbyte]* %hello, int 0, int 0
%null_p = getelementptr [1 x sbyte]* %null, int 0, int 0
%null_hello_p = getelementptr [7 x sbyte]* %null_hello, int 0, int 0
%hello_l = call uint %strlen(sbyte* %hello_p)
%null_l = call uint %strlen(sbyte* %null_p)
%null_hello_l = call uint %strlen(sbyte* %null_hello_p)
%sum1 = add uint %hello_l, %null_l
%sum2 = add uint %sum1, %null_hello_l
%result = cast uint %sum2 to int
ret int %result
ret uint %hello_l
}
uint %test2() {
%null_p = getelementptr [1 x sbyte]* %null, int 0, int 0
%null_l = call uint %strlen(sbyte* %null_p)
ret uint %null_l
}
uint %test3() {
%null_hello_p = getelementptr [7 x sbyte]* %null_hello, int 0, int 0
%null_hello_l = call uint %strlen(sbyte* %null_hello_p)
ret uint %null_hello_l
}
bool %test4() {
%hello_p = getelementptr [6 x sbyte]* %hello, int 0, int 0
%hello_l = call uint %strlen(sbyte* %hello_p)
%eq_hello = seteq uint %hello_l, 0
ret bool %eq_hello
}
bool %test5() {
%null_p = getelementptr [1 x sbyte]* %null, int 0, int 0
%null_l = call uint %strlen(sbyte* %null_p)
%eq_null = seteq uint %null_l, 0
ret bool %eq_null
}
bool %test6() {
%hello_p = getelementptr [6 x sbyte]* %hello, int 0, int 0
%hello_l = call uint %strlen(sbyte* %hello_p)
%ne_hello = setne uint %hello_l, 0
ret bool %ne_hello
}
bool %test7() {
%null_p = getelementptr [1 x sbyte]* %null, int 0, int 0
%null_l = call uint %strlen(sbyte* %null_p)
%ne_null = setne uint %null_l, 0
ret bool %ne_null
}