Commit Graph

13 Commits

Author SHA1 Message Date
Craig Topper 83613bb436 [X86] Fix test checks to include leading 'v' on avx mnemonic names.
llvm-svn: 275774
2016-07-18 06:49:29 +00:00
Simon Pilgrim 8cfcf586bb [X86][SSE] Added cvtdq2pd/cvtps2pd generic IR tests
Added D20528 implementations as well as existing x86 intrinsics versions

llvm-svn: 270494
2016-05-23 21:45:02 +00:00
Simon Pilgrim 7e6606f4f1 [X86][SSE] Add general memory folding for (V)INSERTPS instruction
This patch improves the memory folding of the inserted float element for the (V)INSERTPS instruction.

The existing implementation occurs in the DAGCombiner and relies on the narrowing of a whole vector load into a scalar load (and then converted into a vector) to (hopefully) allow folding to occur later on. Not only has this proven problematic for debug builds, it also prevents other memory folds (notably stack reloads) from happening.

This patch removes the old implementation and moves the folding code to the X86 foldMemoryOperand handler. A new private 'special case' function - foldMemoryOperandCustom - has been added to deal with memory folding of instructions that can't just use the lookup tables - (V)INSERTPS is the first of several that could be done.

It also tweaks the memory operand folding code with an additional pointer offset that allows existing memory addresses to be modified, in this case to convert the vector address to the explicit address of the scalar element that will be inserted.

Unlike the previous implementation we now set the insertion source index to zero, although this is ignored for the (V)INSERTPSrm version, anything that relied on shuffle decodes (such as unfolding of insertps loads) was incorrectly calculating the source address - I've added a test for this at insertps-unfold-load-bug.ll

Differential Revision: http://reviews.llvm.org/D13988

llvm-svn: 252074
2015-11-04 20:48:09 +00:00
Simon Pilgrim b0d860a394 [X86][AVX] Tweaked shuffle stack folding tests
To avoid alternative lowerings.

llvm-svn: 251986
2015-11-03 21:58:35 +00:00
Simon Pilgrim 5e79ea8281 [X86] Stack folding tests - just use mtriple - no need for mcpu in these tests
llvm-svn: 251229
2015-10-25 11:42:46 +00:00
Stephen Canon 8216d88511 Don't raise inexact when lowering ceil, floor, round, trunc.
The C standard has historically not specified whether or not these functions should raise the inexact flag. Traditionally on Darwin, these functions *did* raise inexact, and the llvm lowerings followed that conventions. n1778 (C bindings for IEEE-754 (2008)) clarifies that these functions should not set inexact. This patch brings the lowerings for arm64 and x86 in line with the newly specified behavior.  This also lets us fold some logic into TD patterns, which is nice.

Differential Revision: http://reviews.llvm.org/D12969

llvm-svn: 248266
2015-09-22 11:43:17 +00:00
Simon Pilgrim 752de5dff2 [X86][SSE] Added (V)ROUNDSD + (V)ROUNDSS stack folding support
llvm-svn: 241671
2015-07-08 08:07:57 +00:00
Simon Pilgrim e68c8606ed [X86][SSE] Force execution domain on float/double unpack shuffle tests.
llvm-svn: 235259
2015-04-18 18:50:55 +00:00
Simon Pilgrim 0238b96c06 [X86] Force fp stack folding tests to keep to specific domain.
General boolean instructions (AND, ANDN, OR, XOR) need to use a specific domain instruction (and not just the default).

llvm-svn: 228495
2015-02-07 16:14:55 +00:00
Craig Topper 0271d10d35 [x86] Change u8imm operands to always print as unsigned. This makes shuffle masks and the like make way more sense.
llvm-svn: 226902
2015-01-23 08:00:59 +00:00
Simon Pilgrim 7e6d573e87 [X86][AVX] Added (V)MOVDDUP / (V)MOVSLDUP / (V)MOVSHDUP memory folding + tests.
Minor tweak now that D7042 is complete, we can enable stack folding for (V)MOVDDUP and do proper testing.

Added missing AVX ymm folding patterns and fixed alignment for AVX VMOVSLDUP / VMOVSHDUP.

llvm-svn: 226873
2015-01-22 22:39:59 +00:00
Simon Pilgrim f5dcc1cbe6 [X86][AVX] Simplified diff between AVX1 and SSE42 fp stack folding tests. NFC.
Changed the AVX1 tests register spill tail call to return a xmm like the SSE42 version - makes doing diffs between them a lot easier without affecting the spills themselves.

llvm-svn: 226623
2015-01-21 00:02:13 +00:00
Simon Pilgrim 0d68d98bd5 [X86][AVX] Renamed AVX1 fp stack folding tests. NFC.
The SSE42 version of the AVX1 float stack folding tests will be added shortly, this renames the AVX1 file so that the files will be near each other in a directory listing to help ensure they are kept in sync.

llvm-svn: 226620
2015-01-20 23:45:50 +00:00