blob: 22ff73234d59eab8758b5fbddc8d1a0fa26184b6 [file] [log] [blame]
; RUN: llc -verify-machineinstrs -mcpu=g5 -mtriple=powerpc64-unknown-linux-gnu -ppc-asm-full-reg-names < %s | FileCheck %s
; Check that the peephole optimizer knows about sext and zext instructions.
; CHECK: test1sext
define i32 @test1sext(i64 %A, i64 %B, i32* %P, i64 *%P2) nounwind {
%C = add i64 %A, %B
; CHECK: add [[SUM:r[0-9]+]], r3, r4
%D = trunc i64 %C to i32
%E = shl i64 %C, 32
%F = ashr i64 %E, 32
; CHECK: extsw [[EXT:r[0-9]+]], [[SUM]]
store volatile i64 %F, i64 *%P2
; CHECK-DAG: std [[EXT]]
store volatile i32 %D, i32* %P
; Reuse low bits of extended register, don't extend live range of SUM.
; CHECK-DAG: stw [[SUM]]
%R = add i32 %D, %D
ret i32 %R