Function Layout, Global Variable Layout and Pooled Constants Layout Reordering

tests_lit/llvm2ice_tests/reorder-functions.ll

Index: tests_lit/llvm2ice_tests/reorder-functions.ll
diff --git a/tests_lit/llvm2ice_tests/reorder-functions.ll b/tests_lit/llvm2ice_tests/reorder-functions.ll
new file mode 100644
index 0000000000000000000000000000000000000000..69b9ee2cc2a1efd89962f4bc34e67297a87c2f1e
--- /dev/null
+++ b/tests_lit/llvm2ice_tests/reorder-functions.ll
@@ -0,0 +1,96 @@
+; This is a smoke test of function reordering.
+
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -O2 \
+; RUN:    -sz-seed=1 -reorder-functions \
+; RUN:    | FileCheck %s --check-prefix=DEFAULTWINDOWSIZE
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -Om1 \
+; RUN:    -sz-seed=1 -reorder-functions \
+; RUN:    | FileCheck %s --check-prefix=DEFAULTWINDOWSIZE
+
+
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -O2 \
+; RUN:    -sz-seed=1 -reorder-functions \
+; RUN:    -reorder-functions-window-size=1 \
+; RUN:    | FileCheck %s --check-prefix=WINDOWSIZE1
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -Om1 \
+; RUN:    -sz-seed=1 -reorder-functions \
+; RUN:    -reorder-functions-window-size=1 \
+; RUN:    | FileCheck %s --check-prefix=WINDOWSIZE1
+
+
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -O2 \
+; RUN:    -sz-seed=1 -reorder-functions \
+; RUN:    -threads=0 \
+; RUN:    | FileCheck %s --check-prefix=SEQUENTIAL
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -Om1 \
+; RUN:    -sz-seed=1 -reorder-functions \
+; RUN:    -threads=0 \
+; RUN:    | FileCheck %s --check-prefix=SEQUENTIAL
+
+
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -O2 \
+; RUN:    -sz-seed=1 -reorder-functions \
+; RUN:    -reorder-functions-window-size=0xffffffff \
+; RUN:    | FileCheck %s --check-prefix=WINDOWSIZEMAX
+; RUN: %p2i -i %s --filetype=obj --disassemble --args -Om1 \
+; RUN:    -sz-seed=1 -reorder-functions \
+; RUN:    -reorder-functions-window-size=0xffffffff \
+; RUN:    | FileCheck %s --check-prefix=WINDOWSIZEMAX
+
+define void @first_function() {
+entry:
+  ret void
+}
+
+define void @second_function() {
+entry:
+  ret void
+}
+
+define void @third_function() {
+entry:
+  ret void
+}
+
+define void @fourth_function() {
+entry:
+  ret void
+}
+
+define void @fifth_function() {
+entry:
+  ret void
+}
+
+define void @sixth_function() {
+entry:
+  ret void
+}
+
+; DEFAULTWINDOWSIZE-LABEL: fourth_function
+; DEFAULTWINDOWSIZE-LABEL: first_function
+; DEFAULTWINDOWSIZE-LABEL: third_function
+; DEFAULTWINDOWSIZE-LABEL: sixth_function
+; DEFAULTWINDOWSIZE-LABEL: fifth_function
+; DEFAULTWINDOWSIZE-LABEL: second_function
+
+; WINDOWSIZE1-LABEL: first_function
+; WINDOWSIZE1-LABEL: second_function
+; WINDOWSIZE1-LABEL: third_function
+; WINDOWSIZE1-LABEL: fourth_function
+; WINDOWSIZE1-LABEL: fifth_function
+; WINDOWSIZE1-LABEL: sixth_function
+
+; SEQUENTIAL-LABEL: first_function
+; SEQUENTIAL-LABEL: second_function
+; SEQUENTIAL-LABEL: third_function
+; SEQUENTIAL-LABEL: fourth_function
+; SEQUENTIAL-LABEL: fifth_function
+; SEQUENTIAL-LABEL: sixth_function
+
+; WINDOWSIZEMAX-LABEL: fourth_function
+; WINDOWSIZEMAX-LABEL: first_function
+; WINDOWSIZEMAX-LABEL: third_function
+; WINDOWSIZEMAX-LABEL: sixth_function
+; WINDOWSIZEMAX-LABEL: fifth_function
+; WINDOWSIZEMAX-LABEL: second_function