# Test for warnings when producing load hazards (instructions that # reference the target of load one stage further down the pipeline. # Written by Ben Elliston (bje@redhat.com) # Run GAS and check that it emits the desired warning for the test case. # Arguments: # file -- name of the test case to assemble. # testname -- a string describing the test. # warnpattern -- a regular expression, suitable for use by the Tcl # regexp command, to decide if the warning string was emitted by # the assembler to stderr. proc iq2000_warning_test { file testname {warnpattern ""} } { global comp_output gas_run $file "" ">/dev/null" verbose "output was $comp_output" 2 if {$warnpattern == ""} { if {$comp_output == ""} { pass $testname } else { fail $testname } return } if {[regexp "Warning: $warnpattern" $comp_output]} { pass $testname } else { fail $testname } } if [istarget iq2000*-*-*] { foreach file [glob -nocomplain -- $srcdir/$subdir/hazard*.s] { set file [file tail $file] switch -- $file { "hazard0.s" { set warnpattern "operand references R10 of previous load" } "hazard1.s" { set warnpattern "operand references R1 of previous load" } "hazard2.s" { set warnpattern "operand references R2 of previous load" } "hazard3.s" { set warnpattern "instruction implicitly accesses R31 of previous load" } "hazard4.s" { set warnpattern "operand references R10 of previous load" } "hazard5.s" { set warnpattern "operand references R8 of previous load" } default { error "no expected result specified for $file" return } } iq2000_warning_test $file "assembler emits load hazard warning for $file" $warnpattern } set testname "assembler emits no warnings when there are no load hazards" iq2000_warning_test nohazard.s $testname }