; RUN: llc < %s -O2 -march=x86-64 | FileCheck %s | |
; Checks that a zeroing mov is inserted for the trunc/zext pair even when | |
; the source of the zext is an AssertSext node | |
; PR20494 | |
define i64 @main(i64 %a) { | |
; CHECK-LABEL: main | |
; CHECK: movl %e{{..}}, %eax | |
; CHECK: ret | |
%or = or i64 %a, -2 | |
%trunc = trunc i64 %or to i32 | |
br label %l | |
l: | |
%ext = zext i32 %trunc to i64 | |
ret i64 %ext | |
} |