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| author | Dan Gohman <gohman@apple.com> | 2010-01-21 02:09:26 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-01-21 02:09:26 +0000 |
| commit | a10756ee657a4d43a48cca5c166919093930ed6b (patch) | |
| tree | 52a9cf0b867521026963ca127f6a46d19f0f8f78 /test/CodeGen/X86/2006-05-11-InstrSched.ll | |
| parent | ac8b4bf66b7263018fe6c133604a30780c24982e (diff) | |
| download | llvm-a10756ee657a4d43a48cca5c166919093930ed6b.tar.gz llvm-a10756ee657a4d43a48cca5c166919093930ed6b.tar.bz2 llvm-a10756ee657a4d43a48cca5c166919093930ed6b.tar.xz | |
Re-implement the main strength-reduction portion of LoopStrengthReduction.
This new version is much more aggressive about doing "full" reduction in
cases where it reduces register pressure, and also more aggressive about
rewriting induction variables to count down (or up) to zero when doing so
reduces register pressure.
It currently uses fairly simplistic algorithms for finding reuse
opportunities, but it introduces a new framework allows it to combine
multiple strategies at once to form hybrid solutions, instead of doing
all full-reduction or all base+index.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94061 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2006-05-11-InstrSched.ll')
| -rw-r--r-- | test/CodeGen/X86/2006-05-11-InstrSched.ll | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/test/CodeGen/X86/2006-05-11-InstrSched.ll b/test/CodeGen/X86/2006-05-11-InstrSched.ll index bdbe713a29..56d6aa960e 100644 --- a/test/CodeGen/X86/2006-05-11-InstrSched.ll +++ b/test/CodeGen/X86/2006-05-11-InstrSched.ll @@ -1,5 +1,5 @@ ; RUN: llc < %s -march=x86 -mattr=+sse2 -stats -realign-stack=0 |&\ -; RUN: grep {asm-printer} | grep 31 +; RUN: grep {asm-printer} | grep 34 target datalayout = "e-p:32:32" define void @foo(i32* %mc, i32* %bp, i32* %ms, i32* %xmb, i32* %mpp, i32* %tpmm, i32* %ip, i32* %tpim, i32* %dpp, i32* %tpdm, i32* %bpi, i32 %M) nounwind { @@ -40,7 +40,7 @@ cond_true: ; preds = %cond_true, %entry %tmp137.upgrd.7 = bitcast i32* %tmp137 to <2 x i64>* ; <<2 x i64>*> [#uses=1] store <2 x i64> %tmp131, <2 x i64>* %tmp137.upgrd.7 %tmp147 = add nsw i32 %tmp.10, 8 ; <i32> [#uses=1] - %tmp.upgrd.8 = icmp slt i32 %tmp147, %M ; <i1> [#uses=1] + %tmp.upgrd.8 = icmp ne i32 %tmp147, %M ; <i1> [#uses=1] %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] br i1 %tmp.upgrd.8, label %cond_true, label %return |