1*9880d681SAndroid Build Coastguard Worker; Test 64-bit atomic subtractions, z196 version. 2*9880d681SAndroid Build Coastguard Worker; 3*9880d681SAndroid Build Coastguard Worker; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s 4*9880d681SAndroid Build Coastguard Worker 5*9880d681SAndroid Build Coastguard Worker; Check addition of a variable. 6*9880d681SAndroid Build Coastguard Workerdefine i64 @f1(i64 %dummy, i64 *%src, i64 %b) { 7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f1: 8*9880d681SAndroid Build Coastguard Worker; CHECK: lcgr [[NEG:%r[0-5]]], %r4 9*9880d681SAndroid Build Coastguard Worker; CHECK: laag %r2, [[NEG]], 0(%r3) 10*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 11*9880d681SAndroid Build Coastguard Worker %res = atomicrmw sub i64 *%src, i64 %b seq_cst 12*9880d681SAndroid Build Coastguard Worker ret i64 %res 13*9880d681SAndroid Build Coastguard Worker} 14*9880d681SAndroid Build Coastguard Worker 15*9880d681SAndroid Build Coastguard Worker; Check addition of 1, which needs a temporary. 16*9880d681SAndroid Build Coastguard Workerdefine i64 @f2(i64 %dummy, i64 *%src) { 17*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f2: 18*9880d681SAndroid Build Coastguard Worker; CHECK: lghi [[TMP:%r[0-5]]], -1 19*9880d681SAndroid Build Coastguard Worker; CHECK: laag %r2, [[TMP]], 0(%r3) 20*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 21*9880d681SAndroid Build Coastguard Worker %res = atomicrmw sub i64 *%src, i64 1 seq_cst 22*9880d681SAndroid Build Coastguard Worker ret i64 %res 23*9880d681SAndroid Build Coastguard Worker} 24*9880d681SAndroid Build Coastguard Worker 25*9880d681SAndroid Build Coastguard Worker; Check the high end of the LAAG range. 26*9880d681SAndroid Build Coastguard Workerdefine i64 @f3(i64 %dummy, i64 *%src, i64 %b) { 27*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f3: 28*9880d681SAndroid Build Coastguard Worker; CHECK: lcgr [[NEG:%r[0-5]]], %r4 29*9880d681SAndroid Build Coastguard Worker; CHECK: laag %r2, [[NEG]], 524280(%r3) 30*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 31*9880d681SAndroid Build Coastguard Worker %ptr = getelementptr i64, i64 *%src, i64 65535 32*9880d681SAndroid Build Coastguard Worker %res = atomicrmw sub i64 *%ptr, i64 %b seq_cst 33*9880d681SAndroid Build Coastguard Worker ret i64 %res 34*9880d681SAndroid Build Coastguard Worker} 35*9880d681SAndroid Build Coastguard Worker 36*9880d681SAndroid Build Coastguard Worker; Check the next doubleword up, which needs separate address logic. 37*9880d681SAndroid Build Coastguard Workerdefine i64 @f4(i64 %dummy, i64 *%src, i64 %b) { 38*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f4: 39*9880d681SAndroid Build Coastguard Worker; CHECK-DAG: lcgr [[NEG:%r[0-5]]], %r4 40*9880d681SAndroid Build Coastguard Worker; CHECK-DAG: agfi %r3, 524288 41*9880d681SAndroid Build Coastguard Worker; CHECK: laag %r2, [[NEG]], 0(%r3) 42*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 43*9880d681SAndroid Build Coastguard Worker %ptr = getelementptr i64, i64 *%src, i64 65536 44*9880d681SAndroid Build Coastguard Worker %res = atomicrmw sub i64 *%ptr, i64 %b seq_cst 45*9880d681SAndroid Build Coastguard Worker ret i64 %res 46*9880d681SAndroid Build Coastguard Worker} 47*9880d681SAndroid Build Coastguard Worker 48*9880d681SAndroid Build Coastguard Worker; Check the low end of the LAAG range. 49*9880d681SAndroid Build Coastguard Workerdefine i64 @f5(i64 %dummy, i64 *%src, i64 %b) { 50*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f5: 51*9880d681SAndroid Build Coastguard Worker; CHECK: lcgr [[NEG:%r[0-5]]], %r4 52*9880d681SAndroid Build Coastguard Worker; CHECK: laag %r2, [[NEG]], -524288(%r3) 53*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 54*9880d681SAndroid Build Coastguard Worker %ptr = getelementptr i64, i64 *%src, i64 -65536 55*9880d681SAndroid Build Coastguard Worker %res = atomicrmw sub i64 *%ptr, i64 %b seq_cst 56*9880d681SAndroid Build Coastguard Worker ret i64 %res 57*9880d681SAndroid Build Coastguard Worker} 58*9880d681SAndroid Build Coastguard Worker 59*9880d681SAndroid Build Coastguard Worker; Check the next doubleword down, which needs separate address logic. 60*9880d681SAndroid Build Coastguard Workerdefine i64 @f6(i64 %dummy, i64 *%src, i64 %b) { 61*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f6: 62*9880d681SAndroid Build Coastguard Worker; CHECK-DAG: lcgr [[NEG:%r[0-5]]], %r4 63*9880d681SAndroid Build Coastguard Worker; CHECK-DAG: agfi %r3, -524296 64*9880d681SAndroid Build Coastguard Worker; CHECK: laag %r2, [[NEG]], 0(%r3) 65*9880d681SAndroid Build Coastguard Worker; CHECK: br %r14 66*9880d681SAndroid Build Coastguard Worker %ptr = getelementptr i64, i64 *%src, i64 -65537 67*9880d681SAndroid Build Coastguard Worker %res = atomicrmw sub i64 *%ptr, i64 %b seq_cst 68*9880d681SAndroid Build Coastguard Worker ret i64 %res 69*9880d681SAndroid Build Coastguard Worker} 70