llvm/test/CodeGen/X86/subreg-to-reg-0.ll
2009-09-08 23:54:48 +00:00

12 lines
265 B
LLVM

; RUN: llc < %s -march=x86-64 | grep mov | count 1
; Do eliminate the zero-extension instruction and rely on
; x86-64's implicit zero-extension!
define i64 @foo(i32* %p) nounwind {
%t = load i32* %p
%n = add i32 %t, 1
%z = zext i32 %n to i64
ret i64 %z
}