blob: 1129dce84a44e48ef2cbf16582ae6e5ba90eedc6 [file] [log] [blame]
; Test 64-bit comparisons in which the second operand is sign-extended
; from a PC-relative i16.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
@g = global i16 1
; Check signed comparison.
define i64 @f1(i64 %src1) {
; CHECK: f1:
; CHECK: cghrl %r2, g
; CHECK-NEXT: j{{g?}}l
; CHECK: br %r14
entry:
%val = load i16 *@g
%src2 = sext i16 %val to i64
%cond = icmp slt i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i64 %src1, %src1
br label %exit
exit:
%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
ret i64 %res
}
; Check unsigned comparison, which cannot use CHRL.
define i64 @f2(i64 %src1) {
; CHECK: f2:
; CHECK-NOT: cghrl
; CHECK: br %r14
entry:
%val = load i16 *@g
%src2 = sext i16 %val to i64
%cond = icmp ult i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i64 %src1, %src1
br label %exit
exit:
%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
ret i64 %res
}
; Check equality.
define i64 @f3(i64 %src1) {
; CHECK: f3:
; CHECK: cghrl %r2, g
; CHECK-NEXT: j{{g?}}e
; CHECK: br %r14
entry:
%val = load i16 *@g
%src2 = sext i16 %val to i64
%cond = icmp eq i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i64 %src1, %src1
br label %exit
exit:
%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
ret i64 %res
}
; Check inequality.
define i64 @f4(i64 %src1) {
; CHECK: f4:
; CHECK: cghrl %r2, g
; CHECK-NEXT: j{{g?}}lh
; CHECK: br %r14
entry:
%val = load i16 *@g
%src2 = sext i16 %val to i64
%cond = icmp ne i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i64 %src1, %src1
br label %exit
exit:
%res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
ret i64 %res
}