1 ; RUN: llc < %s -march=ppc32 | not grep "extsh\|rlwinm" 2 3 declare signext i16 @foo() 4 5 define i32 @test1(i16 signext %X) { 6 %Y = sext i16 %X to i32 ;; dead 7 ret i32 %Y 8 } 9 10 define i32 @test2(i16 zeroext %X) { 11 %Y = sext i16 %X to i32 12 %Z = and i32 %Y, 65535 ;; dead 13 ret i32 %Z 14 } 15 16 define void @test3() { 17 %tmp.0 = call signext i16 @foo() ;; no extsh! 18 %tmp.1 = icmp slt i16 %tmp.0, 1234 19 br i1 %tmp.1, label %then, label %UnifiedReturnBlock 20 21 then: 22 call i32 @test1(i16 signext 0) 23 ret void 24 UnifiedReturnBlock: 25 ret void 26 } 27 28 define i32 @test4(i16* %P) { 29 %tmp.1 = load i16, i16* %P 30 %tmp.2 = zext i16 %tmp.1 to i32 31 %tmp.3 = and i32 %tmp.2, 255 32 ret i32 %tmp.3 33 } 34 35 define i32 @test5(i16* %P) { 36 %tmp.1 = load i16, i16* %P 37 %tmp.2 = bitcast i16 %tmp.1 to i16 38 %tmp.3 = zext i16 %tmp.2 to i32 39 %tmp.4 = and i32 %tmp.3, 255 40 ret i32 %tmp.4 41 } 42 43 define i32 @test6(i32* %P) { 44 %tmp.1 = load i32, i32* %P 45 %tmp.2 = and i32 %tmp.1, 255 46 ret i32 %tmp.2 47 } 48 49 define zeroext i16 @test7(float %a) { 50 %tmp.1 = fptoui float %a to i16 51 ret i16 %tmp.1 52 } 53
