1 ; Test 64-bit unsigned comparisons in which the second operand is constant. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5 ; Check a value near the low end of the range. We use signed forms for 6 ; comparisons with zero, or things that are equivalent to them. 7 define double @f1(double %a, double %b, i64 %i1) { 8 ; CHECK-LABEL: f1: 9 ; CHECK: clgijh %r2, 1 10 ; CHECK: ldr %f0, %f2 11 ; CHECK: br %r14 12 %cond = icmp ugt i64 %i1, 1 13 %res = select i1 %cond, double %a, double %b 14 ret double %res 15 } 16 17 ; Check the top of the CLGIJ range. 18 define double @f2(double %a, double %b, i64 %i1) { 19 ; CHECK-LABEL: f2: 20 ; CHECK: clgijl %r2, 255 21 ; CHECK: ldr %f0, %f2 22 ; CHECK: br %r14 23 %cond = icmp ult i64 %i1, 255 24 %res = select i1 %cond, double %a, double %b 25 ret double %res 26 } 27 28 ; Check the next value up, which needs a separate comparison. 29 define double @f3(double %a, double %b, i64 %i1) { 30 ; CHECK-LABEL: f3: 31 ; CHECK: clgfi %r2, 256 32 ; CHECK: jl 33 ; CHECK: ldr %f0, %f2 34 ; CHECK: br %r14 35 %cond = icmp ult i64 %i1, 256 36 %res = select i1 %cond, double %a, double %b 37 ret double %res 38 } 39 40 ; Check the high end of the CLGFI range. 41 define double @f4(double %a, double %b, i64 %i1) { 42 ; CHECK-LABEL: f4: 43 ; CHECK: clgfi %r2, 4294967295 44 ; CHECK-NEXT: jl 45 ; CHECK: ldr %f0, %f2 46 ; CHECK: br %r14 47 %cond = icmp ult i64 %i1, 4294967295 48 %res = select i1 %cond, double %a, double %b 49 ret double %res 50 } 51 52 ; Check the next value up, which can use a shifted comparison 53 define double @f5(double %a, double %b, i64 %i1) { 54 ; CHECK-LABEL: f5: 55 ; CHECK: srlg [[REG:%r[0-5]]], %r2, 32 56 ; CHECK: cgije [[REG]], 0 57 ; CHECK: ldr %f0, %f2 58 ; CHECK: br %r14 59 %cond = icmp ult i64 %i1, 4294967296 60 %res = select i1 %cond, double %a, double %b 61 ret double %res 62 } 63 ; Check the next value up, which must use a register comparison. 64 define double @f6(double %a, double %b, i64 %i1) { 65 ; CHECK-LABEL: f6: 66 ; CHECK: clgrjl %r2, 67 ; CHECK: ldr %f0, %f2 68 ; CHECK: br %r14 69 %cond = icmp ult i64 %i1, 4294967297 70 %res = select i1 %cond, double %a, double %b 71 ret double %res 72 } 73
