diff options
| -rw-r--r-- | llvm/test/CodeGen/X86/combine-or.ll | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/llvm/test/CodeGen/X86/combine-or.ll b/llvm/test/CodeGen/X86/combine-or.ll index 1601c67dce2..5ab2e3d2508 100644 --- a/llvm/test/CodeGen/X86/combine-or.ll +++ b/llvm/test/CodeGen/X86/combine-or.ll @@ -430,8 +430,7 @@ define <4 x i32> @test2f(<4 x i32> %a, <4 x i32> %b) { ret <4 x i32> %or } -; TODO: Why would we do this? -; (or (and X, c1), c2) -> (and (or X, c2), c1|c2) +; (or (and X, c1), c2) -> (and (or X, c2), c1|c2) iff (c1 & c2) != 0 define <2 x i64> @or_and_v2i64(<2 x i64> %a0) { ; CHECK-LABEL: or_and_v2i64: @@ -444,11 +443,22 @@ define <2 x i64> @or_and_v2i64(<2 x i64> %a0) { ret <2 x i64> %2 } -; If all masked bits are going to be set, that's a constant fold. - define <4 x i32> @or_and_v4i32(<4 x i32> %a0) { ; CHECK-LABEL: or_and_v4i32: ; CHECK: # %bb.0: +; CHECK-NEXT: andps {{.*}}(%rip), %xmm0 +; CHECK-NEXT: orps {{.*}}(%rip), %xmm0 +; CHECK-NEXT: retq + %1 = and <4 x i32> %a0, <i32 1, i32 3, i32 5, i32 7> + %2 = or <4 x i32> %1, <i32 3, i32 2, i32 15, i32 2> + ret <4 x i32> %2 +} + +; If all masked bits are going to be set, that's a constant fold. + +define <4 x i32> @or_and_v4i32_fold(<4 x i32> %a0) { +; CHECK-LABEL: or_and_v4i32_fold: +; CHECK: # %bb.0: ; CHECK-NEXT: movaps {{.*#+}} xmm0 = [3,3,3,3] ; CHECK-NEXT: retq %1 = and <4 x i32> %a0, <i32 1, i32 1, i32 1, i32 1> |
