1 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s 2 3 ; Test that we recognize that an 'and' instruction that feeds a comparison 4 ; to zero can be simplifed by using the record form when one of its operands 5 ; is known to be zero extended. 6 7 @k = common local_unnamed_addr global i32 0, align 4 8 9 ; Function Attrs: norecurse nounwind 10 define signext i32 @cmplwi(i32* nocapture readonly %p, i32* nocapture readonly %q, i32 signext %j, i32 signext %r10) { 11 entry: 12 %0 = load i32, i32* %q, align 4 13 %shl = shl i32 %0, %j 14 %1 = load i32, i32* %p, align 4 15 %and = and i32 %shl, %r10 16 %and1 = and i32 %and, %1 17 %tobool = icmp eq i32 %and1, 0 18 br i1 %tobool, label %cleanup, label %if.then 19 20 if.then: 21 store i32 %j, i32* @k, align 4 22 br label %cleanup 23 24 cleanup: 25 %retval.0 = phi i32 [ 0, %if.then ], [ 1, %entry ] 26 ret i32 %retval.0 27 } 28 29 ; CHECK-LABEL: cmplwi: 30 ; CHECK: lwz [[T1:[0-9]+]], 0(3) 31 ; CHECK: and. {{[0-9]+}}, {{[0-9]+}}, [[T1]] 32 ; CHECK-NOT: cmplwi 33 ; CHECK-NEXT: beq 0, 34
