gas/testsuite/gas/iq2000/load-hazards.exp

   1 # Test for warnings when producing load hazards (instructions that
   2 # reference the target of load one stage further down the pipeline.
   3 # Written by Ben Elliston (bje@redhat.com)
   4
   5 # Run GAS and check that it emits the desired warning for the test case.
   6 # Arguments:
   7 #   file -- name of the test case to assemble.
   8 #   testname -- a string describing the test.
   9 #   warnpattern -- a regular expression, suitable for use by the Tcl
  10 #     regexp command, to decide if the warning string was emitted by
  11 #     the assembler to stderr.
  12
  13 proc iq2000_warning_test { file testname {warnpattern ""} } {
  14     global comp_output
  15
  16     gas_run $file "" ">/dev/null"
  17     verbose "output was $comp_output" 2
  18
  19     if {$warnpattern == ""} {
  20         if {$comp_output == ""} { pass $testname } else { fail $testname }
  21         return
  22     }
  23
  24     if {[regexp "Warning: $warnpattern" $comp_output]} {
  25         pass $testname
  26     } else {
  27         fail $testname
  28     }
  29 }
  30
  31 if [istarget iq2000*-*-*] {
  32     foreach file [glob -nocomplain -- $srcdir/$subdir/hazard*.s] {
  33         set file [file tail $file]
  34         switch -- $file {
  35             "hazard0.s" {
  36                 set warnpattern "operand references R10 of previous load"
  37             }
  38             "hazard1.s" {
  39                 set warnpattern "operand references R1 of previous load"
  40             }
  41             "hazard2.s" {
  42                 set warnpattern "operand references R2 of previous load"
  43             }
  44             "hazard3.s" {
  45                 set warnpattern "instruction implicitly accesses R31 of previous load"
  46             }
  47             "hazard4.s" {
  48                 set warnpattern "operand references R10 of previous load"
  49             }
  50             "hazard5.s" {
  51                 set warnpattern "operand references R8 of previous load"
  52             }
  53             default {
  54                 error "no expected result specified for $file"
  55                 return
  56             }
  57         }
  58         iq2000_warning_test $file "assembler emits load hazard warning for $file" $warnpattern
  59     }
  60
  61     set testname "assembler emits no warnings when there are no load hazards"
  62     iq2000_warning_test nohazard.s $testname
  63 }