1; Tests to make sure elimination of casts is working correctly 2; RUN: opt < %s -instcombine -S | FileCheck %s 3 4define 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