1 ; Test LOCR and LOCGR. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s 4 5 ; Test LOCR. 6 define i32 @f1(i32 %a, i32 %b, i32 %limit) { 7 ; CHECK-LABEL: f1: 8 ; CHECK: clfi %r4, 42 9 ; CHECK: locrhe %r2, %r3 10 ; CHECK: br %r14 11 %cond = icmp ult i32 %limit, 42 12 %res = select i1 %cond, i32 %a, i32 %b 13 ret i32 %res 14 } 15 16 ; Test LOCGR. 17 define i64 @f2(i64 %a, i64 %b, i64 %limit) { 18 ; CHECK-LABEL: f2: 19 ; CHECK: clgfi %r4, 42 20 ; CHECK: locgrhe %r2, %r3 21 ; CHECK: br %r14 22 %cond = icmp ult i64 %limit, 42 23 %res = select i1 %cond, i64 %a, i64 %b 24 ret i64 %res 25 } 26 27 ; Test LOCR in a case that could use COMPARE AND BRANCH. We prefer using 28 ; LOCR if possible. 29 define i32 @f3(i32 %a, i32 %b, i32 %limit) { 30 ; CHECK-LABEL: f3: 31 ; CHECK: chi %r4, 42 32 ; CHECK: locrlh %r2, %r3 33 ; CHECK: br %r14 34 %cond = icmp eq i32 %limit, 42 35 %res = select i1 %cond, i32 %a, i32 %b 36 ret i32 %res 37 } 38 39 ; ...and again for LOCGR. 40 define i64 @f4(i64 %a, i64 %b, i64 %limit) { 41 ; CHECK-LABEL: f4: 42 ; CHECK: cghi %r4, 42 43 ; CHECK: locgrlh %r2, %r3 44 ; CHECK: br %r14 45 %cond = icmp eq i64 %limit, 42 46 %res = select i1 %cond, i64 %a, i64 %b 47 ret i64 %res 48 } 49
