From bbac02de24b2064e80c66c5cf1cdee88f39c5df4 Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Fri, 21 Jan 2022 12:05:50 +0900
Subject: [PATCH] [qfcc] Add failing test for return of postop

Commit 76b3bedb72a0a1b92e658c733bf6ff079d18ce10 broke more than just the
swap test, but at least I know I need to get an edge in the dag.
Currently, the following code is generated: return and add are reversed.

    ../tools/qfcc/test/return-postop.r:8:   return counter++;
    0001 store.i counter, .tmp0
    0002 return .tmp0
    0003 add.i .tmp0, (1), counter

However, I don't want to deal with it right now, so it's marked XFAIL.
---
 tools/qfcc/test/Makemodule.am   | 14 +++++++++++++-
 tools/qfcc/test/return-postop.r | 22 ++++++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)
 create mode 100644 tools/qfcc/test/return-postop.r

diff --git a/tools/qfcc/test/Makemodule.am b/tools/qfcc/test/Makemodule.am
index d5929e0a6..9f4caac0a 100644
--- a/tools/qfcc/test/Makemodule.am
+++ b/tools/qfcc/test/Makemodule.am
@@ -41,6 +41,7 @@ test_progs_dat=\
 	tools/qfcc/test/ptrstructcast.dat \
 	tools/qfcc/test/quaternion.dat \
 	tools/qfcc/test/return-ivar.dat \
+	tools/qfcc/test/return-postop.dat \
 	tools/qfcc/test/sendv.dat \
 	tools/qfcc/test/state.dat \
 	tools/qfcc/test/static-init.dat \
@@ -62,7 +63,8 @@ test_progs_dat=\
 	tools/qfcc/test/while.dat \
 	tools/qfcc/test/zerolinker.dat
 
-fail_progs_dat=
+fail_progs_dat=\
+	tools/qfcc/test/return-postop.dat
 
 test_build_errors=\
 	tools/qfcc/test/classarray.r \
@@ -481,6 +483,16 @@ tools/qfcc/test/return-ivar.run: $(qfcc_test_run_deps)
 include $(return_ivar_dep) # am--include-marker
 r_depfiles_remade += $(return_ivar_dep)
 
+tools_qfcc_test_return_postop_dat_SOURCES=tools/qfcc/test/return-postop.r
+return_postop_obj=$(tools_qfcc_test_return_postop_dat_SOURCES:.r=.o)
+return_postop_dep=$(call qcautodep,$(tools_qfcc_test_return_postop_dat_SOURCES))
+tools/qfcc/test/return-postop.dat$(EXEEXT): $(return_postop_obj) $(QFCC_DEP)
+	$(V_QFCCLD)$(QLINK) -o $@ $(return_postop_obj)
+tools/qfcc/test/return-postop.run: $(qfcc_test_run_deps)
+	@$(top_srcdir)/tools/qfcc/test/build-run $@
+include $(return_postop_dep) # am--include-marker
+r_depfiles_remade += $(return_postop_dep)
+
 tools_qfcc_test_sendv_dat_SOURCES=tools/qfcc/test/sendv.r
 sendv_obj=$(tools_qfcc_test_sendv_dat_SOURCES:.r=.o)
 sendv_dep=$(call qcautodep,$(tools_qfcc_test_sendv_dat_SOURCES))
diff --git a/tools/qfcc/test/return-postop.r b/tools/qfcc/test/return-postop.r
new file mode 100644
index 000000000..5ec27f4a1
--- /dev/null
+++ b/tools/qfcc/test/return-postop.r
@@ -0,0 +1,22 @@
+#include "test-harness.h"
+
+int counter;
+
+int
+function (void)
+{
+	return counter++;
+}
+
+int
+main (void)
+{
+	int ret = 0;
+	counter = 0;
+	function ();
+	if (counter != 1) {
+		printf ("counter != 1: %d\n", counter);
+		ret = 1;
+	}
+	return ret;
+}