Add loop unroll pragma support
http://reviews.llvm.org/D4089
Patch by Mark Heffernan.
llvm-svn: 210667
diff --git a/clang/test/CodeGen/pragma-loop.cpp b/clang/test/CodeGen/pragma-loop.cpp
index fcef108..2bb8860 100644
--- a/clang/test/CodeGen/pragma-loop.cpp
+++ b/clang/test/CodeGen/pragma-loop.cpp
@@ -8,6 +8,7 @@
#pragma clang loop vectorize(enable)
#pragma clang loop interleave_count(4)
#pragma clang loop vectorize_width(4)
+#pragma clang loop unroll(enable)
while (i < Length) {
// CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_1:.*]]
List[i] = i * 2;
@@ -19,7 +20,7 @@
void do_test(int *List, int Length) {
int i = 0;
-#pragma clang loop vectorize_width(8) interleave_count(4)
+#pragma clang loop vectorize_width(8) interleave_count(4) unroll(disable)
do {
// CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_2:.*]]
List[i] = i * 2;
@@ -31,6 +32,7 @@
void for_test(int *List, int Length) {
#pragma clang loop interleave(enable)
#pragma clang loop interleave_count(4)
+#pragma clang loop unroll_count(8)
for (int i = 0; i < Length; i++) {
// CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_3:.*]]
List[i] = i * 2;
@@ -51,7 +53,7 @@
// Verify disable pragma clang loop directive generates correct metadata
void disable_test(int *List, int Length) {
-#pragma clang loop vectorize(disable)
+#pragma clang loop vectorize(disable) unroll(disable)
for (int i = 0; i < Length; i++) {
// CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_5:.*]]
List[i] = i * 2;
@@ -60,10 +62,12 @@
#define VECWIDTH 2
#define INTCOUNT 2
+#define UNROLLCOUNT 8
// Verify defines are correctly resolved in pragma clang loop directive
void for_define_test(int *List, int Length, int Value) {
#pragma clang loop vectorize_width(VECWIDTH) interleave_count(INTCOUNT)
+#pragma clang loop unroll_count(UNROLLCOUNT)
for (int i = 0; i < Length; i++) {
// CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_6:.*]]
List[i] = i * Value;
@@ -74,7 +78,7 @@
template <typename A>
void for_template_test(A *List, int Length, A Value) {
-#pragma clang loop vectorize_width(8) interleave_count(8)
+#pragma clang loop vectorize_width(8) interleave_count(8) unroll_count(8)
for (int i = 0; i < Length; i++) {
// CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_7:.*]]
List[i] = i * Value;
@@ -85,6 +89,7 @@
template <typename A>
void for_template_define_test(A *List, int Length, A Value) {
#pragma clang loop vectorize_width(VECWIDTH) interleave_count(INTCOUNT)
+#pragma clang loop unroll_count(UNROLLCOUNT)
for (int i = 0; i < Length; i++) {
// CHECK: br i1 {{.*}}, label {{.*}}, label {{.*}}, !llvm.loop ![[LOOP_8:.*]]
List[i] = i * Value;
@@ -93,6 +98,7 @@
#undef VECWIDTH
#undef INTCOUNT
+#undef UNROLLCOUNT
// Use templates defined above. Test verifies metadata is generated correctly.
void template_test(double *List, int Length) {
@@ -102,19 +108,22 @@
for_template_define_test<double>(List, Length, Value);
}
-// CHECK: ![[LOOP_1]] = metadata !{metadata ![[LOOP_1]], metadata ![[WIDTH_4:.*]], metadata ![[UNROLL_4:.*]], metadata ![[ENABLE_1:.*]]}
+// CHECK: ![[LOOP_1]] = metadata !{metadata ![[LOOP_1]], metadata ![[UNROLLENABLE_1:.*]], metadata ![[WIDTH_4:.*]], metadata ![[INTERLEAVE_4:.*]], metadata ![[INTENABLE_1:.*]]}
+// CHECK: ![[UNROLLENABLE_1]] = metadata !{metadata !"llvm.loopunroll.enable", i1 true}
// CHECK: ![[WIDTH_4]] = metadata !{metadata !"llvm.vectorizer.width", i32 4}
-// CHECK: ![[UNROLL_4]] = metadata !{metadata !"llvm.vectorizer.unroll", i32 4}
-// CHECK: ![[ENABLE_1]] = metadata !{metadata !"llvm.vectorizer.enable", i1 true}
-// CHECK: ![[LOOP_2]] = metadata !{metadata ![[LOOP_2:.*]], metadata ![[UNROLL_4:.*]], metadata ![[WIDTH_8:.*]]}
+// CHECK: ![[INTERLEAVE_4]] = metadata !{metadata !"llvm.vectorizer.unroll", i32 4}
+// CHECK: ![[INTENABLE_1]] = metadata !{metadata !"llvm.vectorizer.enable", i1 true}
+// CHECK: ![[LOOP_2]] = metadata !{metadata ![[LOOP_2:.*]], metadata ![[UNROLLENABLE_0:.*]], metadata ![[INTERLEAVE_4:.*]], metadata ![[WIDTH_8:.*]]}
+// CHECK: ![[UNROLLENABLE_0]] = metadata !{metadata !"llvm.loopunroll.enable", i1 false}
// CHECK: ![[WIDTH_8]] = metadata !{metadata !"llvm.vectorizer.width", i32 8}
-// CHECK: ![[LOOP_3]] = metadata !{metadata ![[LOOP_3]], metadata ![[UNROLL_4:.*]], metadata ![[ENABLE_1:.*]]}
-// CHECK: ![[LOOP_4]] = metadata !{metadata ![[LOOP_4]], metadata ![[UNROLL_2:.*]], metadata ![[WIDTH_2:.*]]}
-// CHECK: ![[UNROLL_2]] = metadata !{metadata !"llvm.vectorizer.unroll", i32 2}
+// CHECK: ![[LOOP_3]] = metadata !{metadata ![[LOOP_3]], metadata ![[UNROLL_8:.*]], metadata ![[INTERLEAVE_4:.*]], metadata ![[ENABLE_1:.*]]}
+// CHECK: ![[UNROLL_8]] = metadata !{metadata !"llvm.loopunroll.count", i32 8}
+// CHECK: ![[LOOP_4]] = metadata !{metadata ![[LOOP_4]], metadata ![[INTERLEAVE_2:.*]], metadata ![[WIDTH_2:.*]]}
+// CHECK: ![[INTERLEAVE_2]] = metadata !{metadata !"llvm.vectorizer.unroll", i32 2}
// CHECK: ![[WIDTH_2]] = metadata !{metadata !"llvm.vectorizer.width", i32 2}
-// CHECK: ![[LOOP_5]] = metadata !{metadata ![[LOOP_5]], metadata ![[WIDTH_1:.*]]}
+// CHECK: ![[LOOP_5]] = metadata !{metadata ![[LOOP_5]], metadata ![[UNROLLENABLE_0:.*]], metadata ![[WIDTH_1:.*]]}
// CHECK: ![[WIDTH_1]] = metadata !{metadata !"llvm.vectorizer.width", i32 1}
-// CHECK: ![[LOOP_6]] = metadata !{metadata ![[LOOP_6]], metadata ![[UNROLL_2:.*]], metadata ![[WIDTH_2:.*]]}
-// CHECK: ![[LOOP_7]] = metadata !{metadata ![[LOOP_7]], metadata ![[UNROLL_8:.*]], metadata ![[WIDTH_8:.*]]}
-// CHECK: ![[UNROLL_8]] = metadata !{metadata !"llvm.vectorizer.unroll", i32 8}
-// CHECK: ![[LOOP_8]] = metadata !{metadata ![[LOOP_8]], metadata ![[UNROLL_2:.*]], metadata ![[WIDTH_2:.*]]}
+// CHECK: ![[LOOP_6]] = metadata !{metadata ![[LOOP_6]], metadata ![[UNROLL_8:.*]], metadata ![[INTERLEAVE_2:.*]], metadata ![[WIDTH_2:.*]]}
+// CHECK: ![[LOOP_7]] = metadata !{metadata ![[LOOP_7]], metadata ![[UNROLL_8:.*]], metadata ![[INTERLEAVE_8:.*]], metadata ![[WIDTH_8:.*]]}
+// CHECK: ![[INTERLEAVE_8]] = metadata !{metadata !"llvm.vectorizer.unroll", i32 8}
+// CHECK: ![[LOOP_8]] = metadata !{metadata ![[LOOP_8]], metadata ![[UNROLL_8:.*]], metadata ![[INTERLEAVE_2:.*]], metadata ![[WIDTH_2:.*]]}