llvm-6502/x86-64-extend-shift.ll at release_29 - llvm-6502 - Applefritter: Git

6502/llvm-6502

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Dale Johannesen c72b18cdc8 Reapply 122353-122355 with fixes. 122354 was wrong;

the shift type was needed one place, the shift count
type another.  The transform in 123555 had the same
problem.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122366 91177308-0d34-0410-b5e6-96231b3b80d8

2010-12-21 21:55:50 +00:00

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 ; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
 ; Formerly there were two shifts.
 define i64 @baz(i32 %A) nounwind {
 ; CHECK:  shlq  $49, %rax
         %tmp1 = shl i32 %A, 17
         %tmp2 = zext i32 %tmp1 to i64
         %tmp3 = shl i64 %tmp2, 32
         ret i64 %tmp3
 }