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llvm-project/llvm/test/CodeGen
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Sanjay Patel fad5bdaf95 [DAGCombiner] reduce buildvec of zexted extracted element to shuffle 
The motivating case for this is shown in the first regression test. We are 
transferring to scalar and back rather than just zero-extending with 'vpmovzxdq'.

That's a special-case for a more general pattern as shown here. In all tests, 
we're avoiding the vector-scalar-vector moves in favor of vector ops.

We aren't producing optimal shuffle code in some cases though, so the patch is
limited to reduce regressions.

Differential Revision: https://reviews.llvm.org/D56281

llvm-svn: 351198
 		2019-01-15 16:11:05 +00:00
..
AArch64 [AArch64] Adjust the feature set for Exynos 2019-01-15 01:53:49 +00:00
AMDGPU AMDGPU: Add a fast path for icmp.i1(src, false, NE) 2019-01-15 02:13:18 +00:00
ARC
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ARM [ARM GlobalISel] Import MOVi32imm into GlobalISel 2019-01-14 12:04:08 +00:00
AVR [AVR] Update integration/blink.ll as we now generate sbi/cbi instructions. 2019-01-03 21:25:39 +00:00
BPF [BPF] Fix .BTF.ext reloc type assigment issue 2019-01-08 16:36:06 +00:00
Generic Move llc-start-stop-instance to x86 2018-12-04 18:19:08 +00:00
Hexagon [DAGCombiner] allow narrowing of add followed by truncate 2018-12-22 17:10:31 +00:00
Inputs
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Lanai [Targets] Add errors for tiny and kernel codemodel on targets that don't support them 2018-12-07 12:10:23 +00:00
MIR [Dwarf/AArch64] Return address signing B key dwarf support 2018-12-21 10:45:08 +00:00
MSP430 Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00
Mips [MIPS GlobalISel] Fix release build make-check after r351046 2019-01-14 14:12:43 +00:00
NVPTX Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00
Nios2
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PowerPC Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00
RISCV Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00
SPARC Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00
SystemZ Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00
Thumb Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00
Thumb2 Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00
WebAssembly [WebAssembly] Expand SIMD shifts while V8's implementation disagrees 2019-01-15 02:16:03 +00:00
WinCFGuard
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WinEH
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X86 [DAGCombiner] reduce buildvec of zexted extracted element to shuffle 2019-01-15 16:11:05 +00:00
XCore Replace "no-frame-pointer-*" function attributes with "frame-pointer" 2019-01-14 10:55:55 +00:00