[PATCH] D68121: [X86] Model MXCSR for all SSE instructions

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


================
Comment at: llvm/test/CodeGen/X86/evex-to-vex-compress.mir:2317
   $xmm0 = VMOVZPQILo2PQIZrr                    $xmm0                                                   
-  ; CHECK: VCOMISDrm_Int                       $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  VCOMISDZrm_Int                               $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  ; CHECK: VCOMISDrr_Int                       $xmm0, $xmm1, implicit-def $eflags  
-  VCOMISDZrr_Int                               $xmm0, $xmm1, implicit-def $eflags                      
-  ; CHECK: VCOMISSrm_Int                       $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  VCOMISSZrm_Int                               $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  ; CHECK: VCOMISSrr_Int                       $xmm0, $xmm1, implicit-def $eflags 
-  VCOMISSZrr_Int                               $xmm0, $xmm1, implicit-def $eflags                      
-  ; CHECK: VUCOMISDrm_Int                      $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  VUCOMISDZrm_Int                              $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  ; CHECK: VUCOMISDrr_Int                      $xmm0, $xmm1, implicit-def $eflags
-  VUCOMISDZrr_Int                              $xmm0, $xmm1, implicit-def $eflags                      
-  ; CHECK: VUCOMISSrm_Int                      $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  VUCOMISSZrm_Int                              $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  ; CHECK: VUCOMISSrr_Int                      $xmm0, $xmm1, implicit-def $eflags 
-  VUCOMISSZrr_Int                              $xmm0, $xmm1, implicit-def $eflags                      
-  ; CHECK: VCOMISDrm                           $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  VCOMISDZrm                                   $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  ; CHECK: VCOMISDrr                           $xmm0, $xmm1, implicit-def $eflags 
-  VCOMISDZrr                                   $xmm0, $xmm1, implicit-def $eflags                      
-  ; CHECK: VCOMISSrm                           $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  VCOMISSZrm                                   $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  ; CHECK: VCOMISSrr                           $xmm0, $xmm1, implicit-def $eflags 
-  VCOMISSZrr                                   $xmm0, $xmm1, implicit-def $eflags                      
-  ; CHECK: VUCOMISDrm                          $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  VUCOMISDZrm                                  $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  ; CHECK: VUCOMISDrr                          $xmm0, $xmm1, implicit-def $eflags 
-  VUCOMISDZrr                                  $xmm0, $xmm1, implicit-def $eflags                      
-  ; CHECK: VUCOMISSrm                          $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  VUCOMISSZrm                                  $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags
-  ; CHECK: VUCOMISSrr                          $xmm0, $xmm1, implicit-def $eflags 
-  VUCOMISSZrr                                  $xmm0, $xmm1, implicit-def $eflags 
+  ; CHECK: VCOMISDrm_Int                       $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit $mxcsr
+  VCOMISDZrm_Int                               $xmm0, $rdi, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit $mxcsr
----------------
Why are only COMI instructions updated?


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D68121