1 files changed, 70 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/bitcast-vec-uniform.ll b/test/Transforms/InstCombine/bitcast-vec-uniform.ll
new file mode 100644
index 0000000..5975f1e
--- /dev/null
+++ b/test/Transforms/InstCombine/bitcast-vec-uniform.ll
@@ -0,0 +1,70 @@
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+; CHECK: @a
+; CHECK-NOT: bitcast
+; CHECK: ret
+define <4 x i32> @a(<1 x i64> %y) {
+  %c = bitcast <2 x i64> <i64 0, i64 0> to <4 x i32>
+  ret <4 x i32> %c
+}
+
+; CHECK: @b
+; CHECK-NOT: bitcast
+; CHECK: ret
+
+define <4 x i32> @b(<1 x i64> %y) {
+  %c = bitcast <2 x i64> <i64 -1, i64 -1> to <4 x i32>
+  ret <4 x i32> %c
+}
+
+; CHECK: @foo
+; CHECK-NOT: bitcast
+; CHECK: ret
+
+; from MultiSource/Benchmarks/Bullet
+define <2 x float> @foo() {
+  %cast = bitcast i64 -1 to <2 x float>
+  ret <2 x float> %cast
+}
+
+
+; CHECK: @foo2
+; CHECK-NOT: bitcast
+; CHECK: ret
+define <2 x double> @foo2() {
+  %cast = bitcast i128 -1 to <2 x double>
+  ret <2 x double> %cast
+}
+
+; CHECK: @foo3
+; CHECK-NOT: bitcast
+; CHECK: ret
+define <1 x float> @foo3() {
+  %cast = bitcast i32 -1 to <1 x float>
+  ret <1 x float> %cast
+}
+
+; CHECK: @foo4
+; CHECK-NOT: bitcast
+; CHECK: ret
+define float @foo4() {
+  %cast = bitcast <1 x i32 ><i32 -1> to float
+  ret float %cast
+}
+
+; CHECK: @foo5
+; CHECK-NOT: bitcast
+; CHECK: ret
+define double @foo5() {
+  %cast = bitcast <2 x i32 ><i32 -1, i32 -1> to double
+  ret double %cast
+}
+
+
+; CHECK: @foo6
+; CHECK-NOT: bitcast
+; CHECK: ret
+define <2 x double> @foo6() {
+  %cast = bitcast <4 x i32><i32 -1, i32 -1, i32 -1, i32 -1> to <2 x double>
+  ret <2 x double> %cast
+}