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| author | Sanjay Patel <spatel@rotateright.com> | 2015-08-11 14:29:45 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2015-08-11 14:29:45 +0000 |
| commit | 52c2691829200710139decef3d0f5627423554bb (patch) | |
| tree | 610de11b30181336f0098fefd4cf0253301fbe6a /llvm/test | |
| parent | e8c8d887befd1c1a169da6e3711ac1b3419a5b04 (diff) | |
| download | bcm5719-llvm-52c2691829200710139decef3d0f5627423554bb.tar.gz bcm5719-llvm-52c2691829200710139decef3d0f5627423554bb.zip | |
add missing test for machine combiner when optimizing for size
The minsize test will be fixed in the next commit.
llvm-svn: 244603
Diffstat (limited to 'llvm/test')
| -rw-r--r-- | llvm/test/CodeGen/AArch64/mul-lohi.ll | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/AArch64/mul-lohi.ll b/llvm/test/CodeGen/AArch64/mul-lohi.ll index 4515697b999..647594f41de 100644 --- a/llvm/test/CodeGen/AArch64/mul-lohi.ll +++ b/llvm/test/CodeGen/AArch64/mul-lohi.ll @@ -1,5 +1,6 @@ ; RUN: llc -mtriple=arm64-apple-ios7.0 -mcpu=cyclone %s -o - | FileCheck %s ; RUN: llc -mtriple=aarch64_be-linux-gnu -mcpu=cyclone %s -o - | FileCheck --check-prefix=CHECK-BE %s + define i128 @test_128bitmul(i128 %lhs, i128 %rhs) { ; CHECK-LABEL: test_128bitmul: ; CHECK-DAG: mul [[PART1:x[0-9]+]], x0, x3 @@ -16,3 +17,32 @@ define i128 @test_128bitmul(i128 %lhs, i128 %rhs) { %prod = mul i128 %lhs, %rhs ret i128 %prod } + +; The machine combiner should create madd instructions when +; optimizing for size because that's smaller than mul + add. + +define i128 @test_128bitmul_optsize(i128 %lhs, i128 %rhs) optsize { +; CHECK-LABEL: test_128bitmul_optsize: +; CHECK: umulh [[HI:x[0-9]+]], x0, x2 +; CHECK-NEXT: madd [[TEMP1:x[0-9]+]], x0, x3, [[HI]] +; CHECK-NEXT: madd x1, x1, x2, [[TEMP1]] +; CHECK-NEXT: mul x0, x0, x2 +; CHECK-NEXT: ret + + %prod = mul i128 %lhs, %rhs + ret i128 %prod +} + +; FIXME: This should be the same as the optsize test above. + +define i128 @test_128bitmul_minsize(i128 %lhs, i128 %rhs) minsize { +; CHECK-LABEL: test_128bitmul_minsize: +; CHECK-DAG: mul [[PART1:x[0-9]+]], x0, x3 +; CHECK-DAG: umulh [[CARRY:x[0-9]+]], x0, x2 +; CHECK: mul [[PART2:x[0-9]+]], x1, x2 +; CHECK: mul x0, x0, x2 + + %prod = mul i128 %lhs, %rhs + ret i128 %prod +} + |
