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| author | Sanjay Patel <spatel@rotateright.com> | 2017-04-12 15:11:33 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2017-04-12 15:11:33 +0000 |
| commit | 33439f982bd6650c8b42574ade840983962e28a9 (patch) | |
| tree | 992857407bc702cdf7a31b2de0880a13862d6d4d /llvm/test/Transforms/LoopVectorize | |
| parent | 7184c44d66fdbe5876cf5c70f73cd1a76ef9628a (diff) | |
| download | bcm5719-llvm-33439f982bd6650c8b42574ade840983962e28a9.tar.gz bcm5719-llvm-33439f982bd6650c8b42574ade840983962e28a9.zip | |
[InstCombine] morph an existing instruction instead of creating a new one
One potential way to make InstCombine (very slightly?) faster is to recycle instructions
when possible instead of creating new ones. It's not explicitly stated AFAIK, but we don't
consider this an "InstSimplify". We could, however, make a new layer to house transforms
like this if that makes InstCombine more manageable (just throwing out an idea; not sure
how much opportunity is actually here).
Differential Revision: https://reviews.llvm.org/D31863
llvm-svn: 300067
Diffstat (limited to 'llvm/test/Transforms/LoopVectorize')
| -rw-r--r-- | llvm/test/Transforms/LoopVectorize/if-conversion.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/if-conversion.ll b/llvm/test/Transforms/LoopVectorize/if-conversion.ll index acf7b12540d..d3a16e2075d 100644 --- a/llvm/test/Transforms/LoopVectorize/if-conversion.ll +++ b/llvm/test/Transforms/LoopVectorize/if-conversion.ll @@ -18,9 +18,9 @@ target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3 ;CHECK-LABEL: @function0( ;CHECK: load <4 x i32> +;CHECK: icmp sle <4 x i32> ;CHECK: mul <4 x i32> ;CHECK: add <4 x i32> -;CHECK: icmp sle <4 x i32> ;CHECK: select <4 x i1> ;CHECK: ret i32 define i32 @function0(i32* nocapture %a, i32* nocapture %b, i32 %start, i32 %end) nounwind uwtable ssp { @@ -71,8 +71,8 @@ for.end: ;CHECK-LABEL: @reduction_func( ;CHECK: load <4 x i32> -;CHECK: add <4 x i32> ;CHECK: icmp slt <4 x i32> +;CHECK: add <4 x i32> ;CHECK: select <4 x i1> ;CHECK: ret i32 define i32 @reduction_func(i32* nocapture %A, i32 %n) nounwind uwtable readonly ssp { |
