blob: 801944315de009d553c5ed212a584285588b0177 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -mtriple=powerpc -mcpu=pwr7 < %s | FileCheck %s
; This piece of IR is expanded from memcmp.
define i1 @cmp(i8* %a, i8* %b) {
; CHECK-LABEL: cmp:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: lwz 5, 4(3)
; CHECK-NEXT: lwz 7, 0(3)
; CHECK-NEXT: lwz 6, 4(4)
; CHECK-NEXT: lwz 8, 0(4)
; CHECK-NEXT: xor 9, 7, 8
; CHECK-NEXT: xor 10, 5, 6
; CHECK-NEXT: or. 9, 10, 9
; CHECK-NEXT: bne 0, .LBB0_2
; CHECK-NEXT: # %bb.1: # %loadbb1
; CHECK-NEXT: lbz 3, 8(3)
; CHECK-NEXT: lbz 4, 8(4)
; CHECK-NEXT: sub 3, 3, 4
; CHECK-NEXT: srwi 3, 3, 31
; CHECK-NEXT: blr
; CHECK-NEXT: .LBB0_2: # %res_block
; CHECK-NEXT: cmplw 7, 8
; CHECK-NEXT: cmplw 1, 5, 6
; CHECK-NEXT: li 3, 1
; CHECK-NEXT: li 4, -1
; CHECK-NEXT: crandc 20, 0, 2
; CHECK-NEXT: crand 21, 2, 4
; CHECK-NEXT: cror 20, 21, 20
; CHECK-NEXT: isel 3, 4, 3, 20
; CHECK-NEXT: srwi 3, 3, 31
; CHECK-NEXT: blr
entry:
br label %loadbb
res_block:
%0 = icmp ult i64 %4, %5
%1 = select i1 %0, i32 -1, i32 1
br label %endblock
loadbb:
%2 = bitcast i8* %a to i64*
%3 = bitcast i8* %b to i64*
%4 = load i64, i64* %2, align 1
%5 = load i64, i64* %3, align 1
%6 = icmp eq i64 %4, %5
br i1 %6, label %loadbb1, label %res_block
loadbb1:
%7 = getelementptr i8, i8* %a, i64 8
%8 = getelementptr i8, i8* %b, i64 8
%9 = load i8, i8* %7, align 1
%10 = load i8, i8* %8, align 1
%11 = zext i8 %9 to i32
%12 = zext i8 %10 to i32
%13 = sub i32 %11, %12
br label %endblock
endblock:
%phi.res = phi i32 [ %13, %loadbb1 ], [ %1, %res_block ]
%icmp = icmp slt i32 %phi.res, 0
ret i1 %icmp
}