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Simon Pilgrim 83020942d3 [InstCombine][SSE] Demanded vector elements for scalar intrinsics (Part 2 of 2)

Split from D17490. This patch improves support for determining the demanded vector elements through SSE scalar intrinsics:

1 - demanded vector element support for unary and some extra binary scalar intrinsics (RCP/RSQRT/SQRT/FRCZ and ADD/CMP/DIV/ROUND).

2 - addss/addsd get simplified to a fadd call if we aren't interested in the pass through elements

3 - if we don't need the lowest element of a scalar operation then just use the first argument (the pass through elements) directly

We can add support for propagating demanded elements through any equivalent packed SSE intrinsics in a future patch (these wouldn't use the pass through patterns).

Differential Revision: http://reviews.llvm.org/D19318

llvm-svn: 267357

2016-04-24 18:23:14 +00:00

clang

Improve diagnostic checking for va_start to also warn on other instances of undefined behavior, such as a parameter declared with the register keyword in C, or a parameter of a type that undergoes default argument promotion.

2016-04-24 13:30:21 +00:00

clang-tools-extra

clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp: Use raw_string_ostream::str() to flush the buffer explicitly.

2016-04-23 14:54:28 +00:00

compiler-rt

[esan] EfficiencySanitizer libc interceptors

2016-04-23 16:41:24 +00:00

debuginfo-tests

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