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| author | Hal Finkel <hfinkel@anl.gov> | 2013-08-06 17:03:03 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-08-06 17:03:03 +0000 |
| commit | 0e910d2cb5feac287c2a3050c1945a3c4a3d2dd5 (patch) | |
| tree | b95cfdb041b35430cb612d9e4d5986f9566f403a /test/CodeGen | |
| parent | 62d6fa5e8f9a3ffd270a6b08230ff61cae849dcf (diff) | |
| download | external_llvm-0e910d2cb5feac287c2a3050c1945a3c4a3d2dd5.zip external_llvm-0e910d2cb5feac287c2a3050c1945a3c4a3d2dd5.tar.gz external_llvm-0e910d2cb5feac287c2a3050c1945a3c4a3d2dd5.tar.bz2 | |
Add PPC64 mulli pattern
The PPC backend had been missing a pattern to generate mulli for 64-bit
multiples. We had been generating it only for 32-bit multiplies. Unfortunately,
generating li + mulld unnecessarily increases register pressure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187807 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/PowerPC/mulli64.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/test/CodeGen/PowerPC/mulli64.ll b/test/CodeGen/PowerPC/mulli64.ll new file mode 100644 index 0000000..21bc9cc --- /dev/null +++ b/test/CodeGen/PowerPC/mulli64.ll @@ -0,0 +1,16 @@ +; RUN: llc -mcpu=pwr7 -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s +target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64" +target triple = "powerpc64-unknown-linux-gnu" + +define i64 @foo(i64 %a) #0 { +entry: + %mul = mul nsw i64 %a, 3 + ret i64 %mul +} + +; CHECK-LABEL: @foo +; CHECK: mulli 3, 3, 3 +; CHECK: blr + +attributes #0 = { nounwind readnone } + |