Evan Cheng 75315b877c For something like ... uint32_t hi(uint64_t res) { uint_32t hi = res >> 32; return !hi; } llvm IR looks like this: define i32 @hi(i64 %res) nounwind uwtable ssp { entry: %lnot = icmp ult i64 %res, 4294967296 %lnot.ext = zext i1 %lnot to i32 ret i32 %lnot.ext } The optimizer has optimize away the right shift and truncate but the resulting constant is too large to fit in the 32-bit immediate field. The resulting x86 code is worse as a result: movabsq $4294967296, %rax ## imm = 0x100000000 cmpq %rax, %rdi sbbl %eax, %eax andl $1, %eax This patch teaches the x86 lowering code to handle ult against a large immediate with trailing zeros. It will issue a right shift and a truncate followed by a comparison against a shifted immediate. shrq $32, %rdi testl %edi, %edi sete %al movzbl %al, %eax It also handles a ugt comparison against a large immediate with trailing bits set. i.e. X > 0x0ffffffff -> (X >> 32) >= 1 rdar://11866926 llvm-svn: 160312		2012-07-16 19:35:43 +00:00
clang	Add libEdit dependency on ClangDiagnosticCommon. Hopefully this will unbreak the VS build.	2012-07-16 18:53:42 +00:00
compiler-rt	tsan: add platform suffix to Go runtime library	2012-07-16 18:25:43 +00:00
debuginfo-tests	Fix this for buggy gdb behavior alongside the change	2012-06-05 18:16:03 +00:00
libclc	configure.py: Add an install rule.	2012-06-01 17:29:59 +00:00
libcxx	Relax the complete-type checks that are happening under __invokable<Fp, Args...> to only check Fp, and not Args... . This should be sufficient to give the desired high quality diagnostics under both bind and function. And this allows a test reported by Rich E on cfe-dev to pass. Tracked by <rdar://problem/11880602>.	2012-07-16 16:17:34 +00:00
libcxxabi	Add missing #include <stdlib.h> into test which uses ::exit.	2012-07-11 09:37:56 +00:00
lld	Add missing LLVMSupport	2012-07-04 02:16:35 +00:00
lldb	Fix an off by one error when handling a packet where our read buffer size truncates the first chunk of the packet	2012-07-16 18:56:05 +00:00
llvm	For something like	2012-07-16 19:35:43 +00:00
polly	Allow cast instructions within scops	2012-07-16 10:57:32 +00:00