llvm-mirror/test/Transforms/InstCombine/vec_narrow.ll

; RUN: opt < %s -instcombine -S | grep "fadd float"


define float @test(<4 x float> %A, <4 x float> %B, float %f) {
        %C = insertelement <4 x float> %A, float %f, i32 0               ; <%V> [#uses=1]
        %D = fadd <4 x float> %C, %B              ; <%V> [#uses=1]
        %E = extractelement <4 x float> %D, i32 0                ; <float> [#uses=1]
        ret float %E
}
Convert all tests using TCL-style quoting to use shell-style quoting. This was done through the aid of a terrible Perl creation. I will not paste any of the horrors here. Suffice to say, it require multiple staged rounds of replacements, state carried between, and a few nested-construct-parsing hacks that I'm not proud of. It happens, by luck, to be able to deal with all the TCL-quoting patterns in evidence in the LLVM test suite. If anyone is maintaining large out-of-tree test trees, feel free to poke me and I'll send you the steps I used to convert things, as well as answer any painful questions etc. IRC works best for this type of thing I find. Once converted, switch the LLVM lit config to use ShTests the same as Clang. In addition to being able to delete large amounts of Python code from 'lit', this will also simplify the entire test suite and some of lit's architecture. Finally, the test suite runs 33% faster on Linux now. ;] For my 16-hardware-thread (2x 4-core xeon e5520): 36s -> 24s llvm-svn: 159525 2012-07-02 14:47:22 +02:00			`; RUN: opt < %s -instcombine -S \| grep "fadd float"`
new testcase for vector narrowing. llvm-svn: 26537 2006-03-05 01:21:28 +01:00

Land the long talked about "type system rewrite" patch. This patch brings numerous advantages to LLVM. One way to look at it is through diffstat: 109 files changed, 3005 insertions(+), 5906 deletions(-) Removing almost 3K lines of code is a good thing. Other advantages include: 1. Value::getType() is a simple load that can be CSE'd, not a mutating union-find operation. 2. Types a uniqued and never move once created, defining away PATypeHolder. 3. Structs can be "named" now, and their name is part of the identity that uniques them. This means that the compiler doesn't merge them structurally which makes the IR much less confusing. 4. Now that there is no way to get a cycle in a type graph without a named struct type, "upreferences" go away. 5. Type refinement is completely gone, which should make LTO much MUCH faster in some common cases with C++ code. 6. Types are now generally immutable, so we can use "Type " instead "const Type " everywhere. Downsides of this patch are that it removes some functions from the C API, so people using those will have to upgrade to (not yet added) new API. "LLVM 3.0" is the right time to do this. There are still some cleanups pending after this, this patch is large enough as-is. llvm-svn: 134829 2011-07-09 19:41:24 +02:00			`define float @test(<4 x float> %A, <4 x float> %B, float %f) {`
			`%C = insertelement <4 x float> %A, float %f, i32 0 ; <%V> [#uses=1]`
			`%D = fadd <4 x float> %C, %B ; <%V> [#uses=1]`
			`%E = extractelement <4 x float> %D, i32 0 ; <float> [#uses=1]`
new testcase for vector narrowing. llvm-svn: 26537 2006-03-05 01:21:28 +01:00			`ret float %E`
			`}`