Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/test/CodeGen/PowerPC/small-arguments.ll

@@ -0,0 +1,52 @@
+; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- | not grep "extsh\|rlwinm"
+
+declare signext i16 @foo()  
+
+define i32 @test1(i16 signext %X) {
+	%Y = sext i16 %X to i32  ;; dead
+	ret i32 %Y
+}
+
+define i32 @test2(i16 zeroext %X) {
+	%Y = sext i16 %X to i32
+	%Z = and i32 %Y, 65535      ;; dead
+	ret i32 %Z
+}
+
+define void @test3() {
+	%tmp.0 = call signext i16 @foo()             ;; no extsh!
+	%tmp.1 = icmp slt i16 %tmp.0, 1234
+	br i1 %tmp.1, label %then, label %UnifiedReturnBlock
+
+then:	
+	call i32 @test1(i16 signext 0)
+	ret void
+UnifiedReturnBlock:
+	ret void
+}
+
+define i32 @test4(i16* %P) {
+        %tmp.1 = load i16, 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, 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, i32* %P
+        %tmp.2 = and i32 %tmp.1, 255
+        ret i32 %tmp.2
+}
+
+define zeroext i16 @test7(float %a)  {
+        %tmp.1 = fptoui float %a to i16
+        ret i16 %tmp.1
+}