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| author | Chris Lattner <sabre@nondot.org> | 2010-04-15 06:10:49 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2010-04-15 06:10:49 +0000 |
| commit | 3245afdf05234f72721d95fd0cde097255d6814f (patch) | |
| tree | bfa70cf9b11f49d5aa5ee83a5762e1defac6f869 /clang/lib/Basic | |
| parent | 76fa840d0990314d1d1c160803ba9d014a6c01a9 (diff) | |
| download | bcm5719-llvm-3245afdf05234f72721d95fd0cde097255d6814f.tar.gz bcm5719-llvm-3245afdf05234f72721d95fd0cde097255d6814f.zip | |
enhance the load/store narrowing optimization to handle a
tokenfactor in between the load/store. This allows us to
optimize test7 into:
_test7: ## @test7
## BB#0: ## %entry
movl (%rdx), %eax
## kill: SIL<def> ESI<kill>
movb %sil, 5(%rdi)
ret
instead of:
_test7: ## @test7
## BB#0: ## %entry
movl 4(%esp), %ecx
movl $-65281, %eax ## imm = 0xFFFFFFFFFFFF00FF
andl 4(%ecx), %eax
movzbl 8(%esp), %edx
shll $8, %edx
addl %eax, %edx
movl 12(%esp), %eax
movl (%eax), %eax
movl %edx, 4(%ecx)
ret
llvm-svn: 101355
Diffstat (limited to 'clang/lib/Basic')
0 files changed, 0 insertions, 0 deletions
