diff options
| author | Richard Osborne <richard@xmos.com> | 2010-03-10 16:19:31 +0000 |
|---|---|---|
| committer | Richard Osborne <richard@xmos.com> | 2010-03-10 16:19:31 +0000 |
| commit | 2dacd1e9873a4fefb97c7cdf5317c5a5c6150a76 (patch) | |
| tree | bb49fe73c78873468ed4c65598638ac62e94cdc0 /test/CodeGen/XCore/mul64.ll | |
| parent | 48ee0bbb729ae5b4757c74d029b9f5ce602f530a (diff) | |
| download | external_llvm-2dacd1e9873a4fefb97c7cdf5317c5a5c6150a76.zip external_llvm-2dacd1e9873a4fefb97c7cdf5317c5a5c6150a76.tar.gz external_llvm-2dacd1e9873a4fefb97c7cdf5317c5a5c6150a76.tar.bz2 | |
Fold add(add(mul(x,y),a),b) -> lmul(x,y,a,b) if the intermediate
results are unused elsewhere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98157 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/XCore/mul64.ll')
| -rw-r--r-- | test/CodeGen/XCore/mul64.ll | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/test/CodeGen/XCore/mul64.ll b/test/CodeGen/XCore/mul64.ll index c06fe5a..329e214 100644 --- a/test/CodeGen/XCore/mul64.ll +++ b/test/CodeGen/XCore/mul64.ll @@ -25,3 +25,15 @@ entry: ; CHECK-NEXT: mov r0, r3 ; CHECK-NEXT: mov r1, r2 ; CHECK-NEXT: retsp 0 + +define i64 @mul64(i64 %a, i64 %b) { +entry: + %0 = mul i64 %a, %b + ret i64 %0 +} +; CHECK: mul64: +; CHECK: ldc r11, 0 +; CHECK-NEXT: lmul r11, r4, r0, r2, r11, r11 +; CHECK-NEXT: mul r0, r0, r3 +; CHECK-NEXT: lmul r0, r1, r1, r2, r11, r0 +; CHECK-NEXT: mov r0, r4 |