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39f4e8d9cc
This update was done with the following bash script:
find test/Transforms -name "*.ll" | \
while read NAME; do
echo "$NAME"
if ! grep -q "^; *RUN: *llc" $NAME; then
TEMP=`mktemp -t temp`
cp $NAME $TEMP
sed -n "s/^define [^@]*@\([A-Za-z0-9_]*\)(.*$/\1/p" < $NAME | \
while read FUNC; do
sed -i '' "s/;\(.*\)\([A-Za-z0-9_]*\):\( *\)@$FUNC\([( ]*\)\$/;\1\2-LABEL:\3@$FUNC(/g" $TEMP
done
mv $TEMP $NAME
fi
done
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186268 91177308-0d34-0410-b5e6-96231b3b80d8
98 lines
2.6 KiB
LLVM
98 lines
2.6 KiB
LLVM
; Test that the strlen library call simplifier works correctly.
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;
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; RUN: opt < %s -instcombine -S | FileCheck %s
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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-f80:128:128"
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@hello = constant [6 x i8] c"hello\00"
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@null = constant [1 x i8] zeroinitializer
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@null_hello = constant [7 x i8] c"\00hello\00"
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@nullstring = constant i8 0
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@a = common global [32 x i8] zeroinitializer, align 1
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declare i32 @strlen(i8*)
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; Check strlen(string constant) -> integer constant.
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define i32 @test_simplify1() {
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; CHECK-LABEL: @test_simplify1(
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%hello_p = getelementptr [6 x i8]* @hello, i32 0, i32 0
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%hello_l = call i32 @strlen(i8* %hello_p)
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ret i32 %hello_l
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; CHECK-NEXT: ret i32 5
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}
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define i32 @test_simplify2() {
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; CHECK-LABEL: @test_simplify2(
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%null_p = getelementptr [1 x i8]* @null, i32 0, i32 0
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%null_l = call i32 @strlen(i8* %null_p)
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ret i32 %null_l
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; CHECK-NEXT: ret i32 0
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}
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define i32 @test_simplify3() {
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; CHECK-LABEL: @test_simplify3(
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%null_hello_p = getelementptr [7 x i8]* @null_hello, i32 0, i32 0
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%null_hello_l = call i32 @strlen(i8* %null_hello_p)
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ret i32 %null_hello_l
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; CHECK-NEXT: ret i32 0
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}
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define i32 @test_simplify4() {
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; CHECK-LABEL: @test_simplify4(
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%len = tail call i32 @strlen(i8* @nullstring) nounwind
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ret i32 %len
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; CHECK-NEXT: ret i32 0
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}
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; Check strlen(x) == 0 --> *x == 0.
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define i1 @test_simplify5() {
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; CHECK-LABEL: @test_simplify5(
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%hello_p = getelementptr [6 x i8]* @hello, i32 0, i32 0
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%hello_l = call i32 @strlen(i8* %hello_p)
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%eq_hello = icmp eq i32 %hello_l, 0
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ret i1 %eq_hello
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; CHECK-NEXT: ret i1 false
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}
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define i1 @test_simplify6() {
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; CHECK-LABEL: @test_simplify6(
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%null_p = getelementptr [1 x i8]* @null, i32 0, i32 0
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%null_l = call i32 @strlen(i8* %null_p)
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%eq_null = icmp eq i32 %null_l, 0
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ret i1 %eq_null
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; CHECK-NEXT: ret i1 true
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}
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; Check strlen(x) != 0 --> *x != 0.
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define i1 @test_simplify7() {
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; CHECK-LABEL: @test_simplify7(
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%hello_p = getelementptr [6 x i8]* @hello, i32 0, i32 0
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%hello_l = call i32 @strlen(i8* %hello_p)
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%ne_hello = icmp ne i32 %hello_l, 0
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ret i1 %ne_hello
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; CHECK-NEXT: ret i1 true
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}
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define i1 @test_simplify8() {
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; CHECK-LABEL: @test_simplify8(
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%null_p = getelementptr [1 x i8]* @null, i32 0, i32 0
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%null_l = call i32 @strlen(i8* %null_p)
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%ne_null = icmp ne i32 %null_l, 0
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ret i1 %ne_null
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; CHECK-NEXT: ret i1 false
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}
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; Check cases that shouldn't be simplified.
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define i32 @test_no_simplify1() {
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; CHECK-LABEL: @test_no_simplify1(
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%a_p = getelementptr [32 x i8]* @a, i32 0, i32 0
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%a_l = call i32 @strlen(i8* %a_p)
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; CHECK-NEXT: %a_l = call i32 @strlen
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ret i32 %a_l
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; CHECK-NEXT: ret i32 %a_l
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}
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