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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 | 51ad99d2c514a8923a2519e37b43f774d95ef9a5 (patch) | |
| tree | 4dedf54ab5c92f08d11a647e31a5f249f3abf4fc /llvm/test/CodeGen/X86/loop-strength-reduce8.ll | |
| parent | 626aba43d0960b8a99c1dd1680c866cc3f13bbf9 (diff) | |
| download | bcm5719-llvm-51ad99d2c514a8923a2519e37b43f774d95ef9a5.tar.gz bcm5719-llvm-51ad99d2c514a8923a2519e37b43f774d95ef9a5.zip | |
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.
llvm-svn: 94061
Diffstat (limited to 'llvm/test/CodeGen/X86/loop-strength-reduce8.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/loop-strength-reduce8.ll | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/llvm/test/CodeGen/X86/loop-strength-reduce8.ll b/llvm/test/CodeGen/X86/loop-strength-reduce8.ll index e14cd8a99e3..6b2247d1d61 100644 --- a/llvm/test/CodeGen/X86/loop-strength-reduce8.ll +++ b/llvm/test/CodeGen/X86/loop-strength-reduce8.ll @@ -1,4 +1,10 @@ -; RUN: llc < %s -mtriple=i386-apple-darwin | grep leal | not grep 16 +; RUN: llc < %s -mtriple=i386-apple-darwin | FileCheck %s + +; CHECK: leal 16(%eax), %edx +; CHECK: align +; CHECK: addl $4, %edx +; CHECK: decl %ecx +; CHECK: jne LBB1_2 %struct.CUMULATIVE_ARGS = type { i32, i32, i32, i32, i32, i32, i32 } %struct.bitmap_element = type { %struct.bitmap_element*, %struct.bitmap_element*, i32, [2 x i64] } |
