diff options
| 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 | 11b9e452f6ebeabac58c7f16393d9bf1ff0edc65 (patch) | |
| tree | 966ad6e009c59372416ea14a12055d8c41441387 /llvm/test/CodeGen/PowerPC/mulli64.ll | |
| parent | 340c780dd6f7425f7d50bd142901f2ec819743b8 (diff) | |
| download | bcm5719-llvm-11b9e452f6ebeabac58c7f16393d9bf1ff0edc65.tar.gz bcm5719-llvm-11b9e452f6ebeabac58c7f16393d9bf1ff0edc65.zip | |
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.
llvm-svn: 187807
Diffstat (limited to 'llvm/test/CodeGen/PowerPC/mulli64.ll')
| -rw-r--r-- | llvm/test/CodeGen/PowerPC/mulli64.ll | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/PowerPC/mulli64.ll b/llvm/test/CodeGen/PowerPC/mulli64.ll new file mode 100644 index 00000000000..21bc9cc3770 --- /dev/null +++ b/llvm/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 } + |
