;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
-; Check a value near the low end of the range. We use CGFI for comparisons
-; with zero, or things that are equivalent to them.
+; Check a value near the low end of the range. We use signed forms for
+; comparisons with zero, or things that are equivalent to them.
define double @f1(double %a, double %b, i64 %i1) {
-; CHECK: f1:
-; CHECK: clgfi %r2, 1
-; CHECK-NEXT: j{{g?}}h
+; CHECK-LABEL: f1:
+; CHECK: clgijh %r2, 1
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp ugt i64 %i1, 1
ret double %res
}
-; Check the high end of the CLGFI range.
+; Check the top of the CLGIJ range.
define double @f2(double %a, double %b, i64 %i1) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
+; CHECK: clgijl %r2, 255
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+ %cond = icmp ult i64 %i1, 255
+ %res = select i1 %cond, double %a, double %b
+ ret double %res
+}
+
+; Check the next value up, which needs a separate comparison.
+define double @f3(double %a, double %b, i64 %i1) {
+; CHECK-LABEL: f3:
+; CHECK: clgfi %r2, 256
+; CHECK: jl
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+ %cond = icmp ult i64 %i1, 256
+ %res = select i1 %cond, double %a, double %b
+ ret double %res
+}
+
+; Check the high end of the CLGFI range.
+define double @f4(double %a, double %b, i64 %i1) {
+; CHECK-LABEL: f4:
; CHECK: clgfi %r2, 4294967295
-; CHECK-NEXT: j{{g?}}l
+; CHECK-NEXT: jl
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp ult i64 %i1, 4294967295
ret double %res
}
-; Check the next value up, which must use a register comparison.
-define double @f3(double %a, double %b, i64 %i1) {
-; CHECK: f3:
-; CHECK: clgr %r2,
-; CHECK-NEXT: j{{g?}}l
+; Check the next value up, which can use a shifted comparison
+define double @f5(double %a, double %b, i64 %i1) {
+; CHECK-LABEL: f5:
+; CHECK: srlg [[REG:%r[0-5]]], %r2, 32
+; CHECK: cgije [[REG]], 0
; CHECK: ldr %f0, %f2
; CHECK: br %r14
%cond = icmp ult i64 %i1, 4294967296
%res = select i1 %cond, double %a, double %b
ret double %res
}
+; Check the next value up, which must use a register comparison.
+define double @f6(double %a, double %b, i64 %i1) {
+; CHECK-LABEL: f6:
+; CHECK: clgrjl %r2,
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+ %cond = icmp ult i64 %i1, 4294967297
+ %res = select i1 %cond, double %a, double %b
+ ret double %res
+}