1 ; Tests to make sure elimination of casts is working correctly 2 ; RUN: opt < %s -instcombine -S | FileCheck %s 3 4 define i64 @test_sext_zext(i16 %A) { 5 %c1 = zext i16 %A to i32 ; <i32> [#uses=1] 6 %c2 = sext i32 %c1 to i64 ; <i64> [#uses=1] 7 ret i64 %c2 8 ; CHECK-NOT: %c1 9 ; CHECK: %c2 = zext i16 %A to i64 10 ; CHECK: ret i64 %c2 11 } 12
