[PATCH] D103865: [SystemZ] Generate XC loop for memset 0 of variable length.

[Jonas Paulsson via Phabricator via llvm-commits]

jonpa added a comment.

Benchmarking:

**Z14:**

reduced:

  Improvements:
  0.984: f511.povray_r 
  0.988: f510.parest_r 
  0.992: i523.xalancbmk_r 
  0.993: i531.deepsjeng_r 
  0.993: f508.namd_r 
  ...
  
  Regressions:
  1.027: i557.xz_r 
  1.006: f507.cactuBSSN_r 
  ...

full (4):

  Improvements:
  0.990: f511.povray_r 
  0.991: i557.xz_r 
  0.991: f510.parest_r 
  0.998: i523.xalancbmk_r 

**Z15:**

reduced:

  Improvements:
  0.823: i531.deepsjeng_r 
  0.985: f538.imagick_r 
  0.990: i500.perlbench_r 
  0.993: f510.parest_r 
  
  Regressions:
  (none)

full (4):

  Improvements:
  0.994: i531.deepsjeng_r 
  0.995: f510.parest_r 
  0.997: f538.imagick_r 
  
  Regressions:
  1.002: i500.perlbench_r 




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  https://reviews.llvm.org/D103865/new/

https://reviews.llvm.org/D103865