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| author | Eric Christopher <echristo@apple.com> | 2011-07-14 06:23:09 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@apple.com> | 2011-07-14 06:23:09 +0000 |
| commit | 0c666b46642d30ef063e5ead76525b81509fcfda (patch) | |
| tree | 5ab34552e94ac8434ba2b487660d5f2349f7bed4 /llvm/test/CodeGen/ARM/fold-const.ll | |
| parent | e71ccde2498bd7f51107d2a9d37e3ca44a5061d3 (diff) | |
| download | bcm5719-llvm-0c666b46642d30ef063e5ead76525b81509fcfda.tar.gz bcm5719-llvm-0c666b46642d30ef063e5ead76525b81509fcfda.zip | |
Add a testcase for r135123.
Part of rdar://9761830
llvm-svn: 135133
Diffstat (limited to 'llvm/test/CodeGen/ARM/fold-const.ll')
| -rw-r--r-- | llvm/test/CodeGen/ARM/fold-const.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/ARM/fold-const.ll b/llvm/test/CodeGen/ARM/fold-const.ll new file mode 100644 index 00000000000..227e4e8aaa2 --- /dev/null +++ b/llvm/test/CodeGen/ARM/fold-const.ll @@ -0,0 +1,14 @@ +; RUN: llc < %s -march=arm -mattr=+v7 | FileCheck %s + +define i32 @f(i32 %a) nounwind readnone optsize ssp { +entry: + %conv = zext i32 %a to i64 + %tmp1 = tail call i64 @llvm.ctlz.i64(i64 %conv) +; CHECK: clz +; CHECK-NOT: adds + %cast = trunc i64 %tmp1 to i32 + %sub = sub nsw i32 63, %cast + ret i32 %sub +} + +declare i64 @llvm.ctlz.i64(i64) nounwind readnone |
