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| author | Stephen Hines <srhines@google.com> | 2015-04-01 18:49:24 +0000 |
|---|---|---|
| committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2015-04-01 18:49:26 +0000 |
| commit | 3fa16bd6062e23bcdb82ed4dd965674792e6b761 (patch) | |
| tree | 9348fc507292f7e8715d22d64ce5a32131b4f875 /test/CodeGen/AArch64/or-combine.ll | |
| parent | beed47390a60f6f0c77532b3d3f76bb47ef49423 (diff) | |
| parent | ebe69fe11e48d322045d5949c83283927a0d790b (diff) | |
| download | external_llvm-3fa16bd6062e23bcdb82ed4dd965674792e6b761.zip external_llvm-3fa16bd6062e23bcdb82ed4dd965674792e6b761.tar.gz external_llvm-3fa16bd6062e23bcdb82ed4dd965674792e6b761.tar.bz2 | |
Merge "Update aosp/master LLVM for rebase to r230699."
Diffstat (limited to 'test/CodeGen/AArch64/or-combine.ll')
| -rw-r--r-- | test/CodeGen/AArch64/or-combine.ll | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/or-combine.ll b/test/CodeGen/AArch64/or-combine.ll new file mode 100644 index 0000000..c6c343a --- /dev/null +++ b/test/CodeGen/AArch64/or-combine.ll @@ -0,0 +1,44 @@ +; RUN: llc -mtriple=aarch64-linux-gnu -o - %s | FileCheck %s + +define i32 @test_consts(i32 %in) { +; CHECK-LABEL: test_consts: +; CHECK-NOT: bfxil +; CHECK-NOT: and +; CHECK-NOT: orr +; CHECK: ret + + %lo = and i32 %in, 65535 + %hi = and i32 %in, -65536 + %res = or i32 %lo, %hi + ret i32 %res +} + +define i32 @test_generic(i32 %in, i32 %mask1, i32 %mask2) { +; CHECK-LABEL: test_generic: +; CHECK: orr [[FULL_MASK:w[0-9]+]], w1, w2 +; CHECK: and w0, w0, [[FULL_MASK]] + + %lo = and i32 %in, %mask1 + %hi = and i32 %in, %mask2 + %res = or i32 %lo, %hi + ret i32 %res +} + +; In this case the transformation isn't profitable, since %lo and %hi +; are used more than once. +define [3 x i32] @test_reuse(i32 %in, i32 %mask1, i32 %mask2) { +; CHECK-LABEL: test_reuse: +; CHECK-DAG: and w1, w0, w1 +; CHECK-DAG: and w2, w0, w2 +; CHECK-DAG: orr w0, w1, w2 + + %lo = and i32 %in, %mask1 + %hi = and i32 %in, %mask2 + %recombine = or i32 %lo, %hi + + %res.tmp0 = insertvalue [3 x i32] undef, i32 %recombine, 0 + %res.tmp1 = insertvalue [3 x i32] %res.tmp0, i32 %lo, 1 + %res = insertvalue [3 x i32] %res.tmp1, i32 %hi, 2 + + ret [3 x i32] %res +} |