| # 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 |
| } |