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/CodeGen/PowerPC/small-arguments.ll b/test/CodeGen/PowerPC/small-arguments.ll
new file mode 100644
index 0000000..e512047
--- /dev/null
+++ b/test/CodeGen/PowerPC/small-arguments.ll
@@ -0,0 +1,52 @@
+; RUN: llvm-as < %s | llc -march=ppc32 | not grep {extsh\\|rlwinm}
+
+declare i16 @foo() sext
+
+define i32 @test1(i16 sext %X) {
+ %Y = sext i16 %X to i32 ;; dead
+ ret i32 %Y
+}
+
+define i32 @test2(i16 zext %X) {
+ %Y = sext i16 %X to i32
+ %Z = and i32 %Y, 65535 ;; dead
+ ret i32 %Z
+}
+
+define void @test3() {
+ %tmp.0 = call i16 @foo() sext ;; no extsh!
+ %tmp.1 = icmp slt i16 %tmp.0, 1234
+ br i1 %tmp.1, label %then, label %UnifiedReturnBlock
+
+then:
+ call i32 @test1(i16 0 sext)
+ ret void
+UnifiedReturnBlock:
+ ret void
+}
+
+define i32 @test4(i16* %P) {
+ %tmp.1 = load i16* %P
+ %tmp.2 = zext i16 %tmp.1 to i32
+ %tmp.3 = and i32 %tmp.2, 255
+ ret i32 %tmp.3
+}
+
+define i32 @test5(i16* %P) {
+ %tmp.1 = load i16* %P
+ %tmp.2 = bitcast i16 %tmp.1 to i16
+ %tmp.3 = zext i16 %tmp.2 to i32
+ %tmp.4 = and i32 %tmp.3, 255
+ ret i32 %tmp.4
+}
+
+define i32 @test6(i32* %P) {
+ %tmp.1 = load i32* %P
+ %tmp.2 = and i32 %tmp.1, 255
+ ret i32 %tmp.2
+}
+
+define i16 @test7(float %a) zext {
+ %tmp.1 = fptoui float %a to i16
+ ret i16 %tmp.1
+}