Evan Cheng 5213139f48 Let targets provide hooks that compute known zero and ones for any_extend ... and extload's. If they are implemented as zero-extend, or implicitly zero-extend, then this can enable more demanded bits optimizations. e.g. define void @foo(i16* %ptr, i32 %a) nounwind { entry: %tmp1 = icmp ult i32 %a, 100 br i1 %tmp1, label %bb1, label %bb2 bb1: %tmp2 = load i16* %ptr, align 2 br label %bb2 bb2: %tmp3 = phi i16 [ 0, %entry ], [ %tmp2, %bb1 ] %cmp = icmp ult i16 %tmp3, 24 br i1 %cmp, label %bb3, label %exit bb3: call void @bar() nounwind br label %exit exit: ret void } This compiles to the followings before: push {lr} mov r2, #0 cmp r1, #99 bhi LBB0_2 @ BB#1: @ %bb1 ldrh r2, [r0] LBB0_2: @ %bb2 uxth r0, r2 cmp r0, #23 bhi LBB0_4 @ BB#3: @ %bb3 bl _bar LBB0_4: @ %exit pop {lr} bx lr The uxth is not needed since ldrh implicitly zero-extend the high bits. With this change it's eliminated. rdar://12771555 llvm-svn: 169459		2012-12-06 01:28:01 +00:00
clang	Disable clang/test/Preprocessor/macro-multiline.c for now, while investigating lit.ShUtil.parser.	2012-12-06 01:09:31 +00:00
clang-tools-extra	Basic clang-format vim-integration.	2012-12-05 21:06:08 +00:00
compiler-rt	[asan] drop the extension from asan tests (as the extension may be different)	2012-12-05 17:56:54 +00:00
debuginfo-tests	XTARGET was removed, update debug-info tests.	2012-10-20 01:38:50 +00:00
libclc	Fix build against recent versions of Clang. Based on patch by Alastair Donaldson!	2012-12-05 07:39:02 +00:00
libcxx	[CMake] Add support for selecting which c++ abi library to use.	2012-11-30 21:02:29 +00:00
libcxxabi	Rename class __lambda_node to ___lambda_node to fix compile failure with gcc 4.6 and 4.7	2012-12-05 18:55:49 +00:00
lld	Add library dependencies to the lld cmake build.	2012-12-04 21:09:04 +00:00
lldb	Move isprint8() into lldb_private as per post-commit review from Stefanus	2012-12-06 00:10:37 +00:00
llvm	Let targets provide hooks that compute known zero and ones for any_extend	2012-12-06 01:28:01 +00:00
polly	User isl sha commit id instead of the git tag	2012-12-04 21:54:37 +00:00