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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2010-09-30 00:58:35 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2010-09-30 00:58:35 +0000 |
| commit | 9510a2538bcf5e3b42b9ee02ff527fd6681af0ad (patch) | |
| tree | 07a0e448e13c1f3a34e071bdf4c16b437323317a /test/Transforms/SimplifyLibCalls | |
| parent | 3eddd98be31342af81705faf00234b954ff447cf (diff) | |
| download | llvm-9510a2538bcf5e3b42b9ee02ff527fd6681af0ad.tar.gz llvm-9510a2538bcf5e3b42b9ee02ff527fd6681af0ad.tar.bz2 llvm-9510a2538bcf5e3b42b9ee02ff527fd6681af0ad.tar.xz | |
Add constant folding for strspn and strcspn to SimplifyLibCalls.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115116 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/SimplifyLibCalls')
| -rw-r--r-- | test/Transforms/SimplifyLibCalls/StrSpn.ll | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyLibCalls/StrSpn.ll b/test/Transforms/SimplifyLibCalls/StrSpn.ll new file mode 100644 index 0000000000..f77f32c67c --- /dev/null +++ b/test/Transforms/SimplifyLibCalls/StrSpn.ll @@ -0,0 +1,41 @@ +; RUN: opt < %s -simplify-libcalls -S | FileCheck %s + +target datalayout = "-p:64:64:64" + +@abcba = constant [6 x i8] c"abcba\00" +@abc = constant [4 x i8] c"abc\00" +@null = constant [1 x i8] zeroinitializer + +declare i64 @strspn(i8*, i8*) + +define i64 @testspn(i8* %s1, i8* %s2) { + %abcba_p = getelementptr [6 x i8]* @abcba, i32 0, i32 0 + %abc_p = getelementptr [4 x i8]* @abc, i32 0, i32 0 + %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0 + %test1 = call i64 @strspn(i8* %s1, i8* %null_p) + %test2 = call i64 @strspn(i8* %null_p, i8* %s2) + %test3 = call i64 @strspn(i8* %abcba_p, i8* %abc_p) +; CHECK-NOT: call i64 @strspn + %test4 = call i64 @strspn(i8* %s1, i8* %s2) +; CHECK: call i64 @strspn(i8* %s1, i8* %s2) + ret i64 %test3 +; CHECK ret i64 5 +} + +declare i64 @strcspn(i8*, i8*) + +define i64 @testcspn(i8* %s1, i8* %s2) { + %abcba_p = getelementptr [6 x i8]* @abcba, i32 0, i32 0 + %abc_p = getelementptr [4 x i8]* @abc, i32 0, i32 0 + %null_p = getelementptr [1 x i8]* @null, i32 0, i32 0 + %test1 = call i64 @strcspn(i8* %s1, i8* %null_p) +; CHECK: call i64 @strlen(i8* %s1) + %test2 = call i64 @strcspn(i8* %null_p, i8* %s2) + %test3 = call i64 @strcspn(i8* %abcba_p, i8* %abc_p) +; CHECK-NOT: call i64 @strcspn + %test4 = call i64 @strcspn(i8* %s1, i8* %s2) +; CHECK: call i64 @strcspn(i8* %s1, i8* %s2) + %add0 = add i64 %test1, %test3 +; CHECK: add i64 %{{.+}}, 0 + ret i64 %add0 +} |