It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/lib/llvm2cpp.exp b/test/lib/llvm2cpp.exp
new file mode 100644
index 0000000..b4141ac
--- /dev/null
+++ b/test/lib/llvm2cpp.exp
@@ -0,0 +1,113 @@
+# This file defines a tcl proc to assist with testing the llvm2cpp. There are
+# no llvm2cpp specific test cases. Instead, it utilizes all the existing test
+# cases and makes sure llvm2cpp can run them. The basic idea is that we find
+# all the LLVM Assembly (*.ll) files, run llvm2cpp on them to generate a C++
+# program, compile those programs, run them and see if what they produce matches
+# the original input to llvm2cpp.
+
+proc llvm2cpp-test { files } {
+ global subdir llvmtoolsdir llvmlibsdir objdir srcdir objroot srcroot
+ set timeout 30
+ set path [file join $objdir $subdir]
+ set llvm2cpp [file join $llvmtoolsdir llvm2cpp ]
+ set llvmas [file join $llvmtoolsdir llvm-as ]
+ set llvmdis [file join $llvmtoolsdir llvm-dis ]
+ set llvmupgrade [ file join $llvmtoolsdir llvm-upgrade ]
+
+ #Make Output Directory if it does not exist already
+ if { [file exists path] } {
+ cd $path
+ } else {
+ file mkdir $path
+ cd $path
+ }
+
+ file mkdir Output
+
+ foreach test $files {
+
+ set filename [file tail $test]
+ set generated [file join Output $filename.cpp]
+ set executable [file join Output $filename.exe]
+ set output [file join Output $filename.gen]
+ set assembly [file join Output $filename.asm]
+ set testname [file rootname $filename]
+ set bytecode [file join Output $filename.bc]
+
+ # Note that the stderr for llvm-as, etc. must be redirected to /dev/null
+ # because otherwise exec will see the msgs and return 1 even though they
+ # are only warnings. If real errors are generated on stderr then llvm-as
+ # will return a non-zero retval anyway so we're good.
+
+ # Scan the test file to see if there's an XFAIL file. If so, don't run it
+ set retval [ catch {
+ exec -keepnewline grep XFAIL $test 2>/dev/null } msg ]
+ if { $retval == 0 } {
+ continue;
+ }
+
+ # Scan the test file to see if there's a line with "lvm-upgrade" in it.
+ # If so, run llvm-upgrade first or else llvm-as will fail on it.
+ set retval [ catch {
+ exec -keepnewline grep llvm-upgrade $test 2>/dev/null } msg ]
+
+ if { $retval == 0 } {
+ # In this case we must run llvm-upgrade before llvm-as
+ set pipeline llvm-upgrade|llvm-as|llvm-dis
+ set retval [ catch {
+ exec -keepnewline $llvmupgrade < $test -o - | $llvmas | $llvmdis -f -o $assembly 2>/dev/null } msg ]
+ } else {
+ # llvm-upgrade not necessary, just llvm-as/llvm-dis
+ set pipeline llvm-as|llvm-dis
+ set retval [ catch {
+ exec -keepnewline $llvmas < $test -o - | $llvmdis -f -o $assembly 2>/dev/null } msg ]
+ }
+
+ if { $retval != 0 } {
+ fail "$test: $pipeline returned $retval\n$msg"
+ continue
+ }
+
+ # Build bytecode for llvm2cpp input
+ set retval [ catch {
+ exec -keepnewline $llvmas < $assembly > $bytecode 2>/dev/null } msg ]
+
+ if { $retval != 0 } {
+ fail "$test: llvm-as returned $retval\n$msg"
+ continue
+ }
+
+ set retval [ catch {
+ exec -keepnewline $llvm2cpp -f -o $generated < $bytecode 2>/dev/null } msg]
+
+ if { $retval != 0 } {
+ fail "$test: llvm2cpp returned $retval\n$msg"
+ continue
+ }
+
+ set retval [ catch {
+ exec -keepnewline gcc -g -D__STDC_LIMIT_MACROS -o $executable $generated -I$srcroot/include -I$objroot/include -L$llvmlibsdir -lLLVMCore -lLLVMSupport -lLLVMbzip2 -lLLVMSystem -lstdc++ } msg ]
+ if { $retval != 0 } {
+ fail "$test: gcc returned $retval\n$msg"
+ continue
+ }
+
+ set retval [ catch { exec -keepnewline $executable > $output } msg ]
+ if { $retval != 0 } {
+ set execname [file tail $executable]
+ fail "$test: $execname returned $retval:\n$msg"
+ continue
+ }
+
+ set retval [ catch {
+ exec -keepnewline diff $assembly $output } msg ]
+
+ if { $retval != 0 } {
+ fail "$test: diff returned $retval:\n$msg"
+ continue
+ }
+ pass "$test"
+ }
+}
+
+