blob: 693c294f84f1c0e52eeb52b916087c026d72c2f6 [file] [log] [blame]
; Test 64-bit comparisons in which the second operand is sign-extended
; from a PC-relative i32.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
@g = dso_local global i32 1
@h = dso_local global i32 1, align 2, section "foo"
; Check signed comparison.
define dso_local i64 @f1(i64 %src1) {
; CHECK-LABEL: f1:
; CHECK: cgfrl %r2, g
; CHECK-NEXT: blr %r14
; CHECK: br %r14
entry:
%val = load i32, ptr@g
%src2 = sext i32 %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 dso_local i64 @f2(i64 %src1) {
; CHECK-LABEL: f2:
; CHECK-NOT: cgfrl
; CHECK: br %r14
entry:
%val = load i32, ptr@g
%src2 = sext i32 %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 dso_local i64 @f3(i64 %src1) {
; CHECK-LABEL: f3:
; CHECK: cgfrl %r2, g
; CHECK-NEXT: ber %r14
; CHECK: br %r14
entry:
%val = load i32, ptr@g
%src2 = sext i32 %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 dso_local i64 @f4(i64 %src1) {
; CHECK-LABEL: f4:
; CHECK: cgfrl %r2, g
; CHECK-NEXT: blhr %r14
; CHECK: br %r14
entry:
%val = load i32, ptr@g
%src2 = sext i32 %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
}
; Repeat f1 with an unaligned address.
define dso_local i64 @f5(i64 %src1) {
; CHECK-LABEL: f5:
; CHECK: larl [[REG:%r[0-5]]], h
; CHECK: cgf %r2, 0([[REG]])
; CHECK-NEXT: blr %r14
; CHECK: br %r14
entry:
%val = load i32, ptr@h, align 2
%src2 = sext i32 %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 the comparison can be reversed if that allows CGFRL to be used.
define dso_local i64 @f6(i64 %src2) {
; CHECK-LABEL: f6:
; CHECK: cgfrl %r2, g
; CHECK-NEXT: bhr %r14
; CHECK: br %r14
entry:
%val = load i32, ptr@g
%src1 = sext i32 %val to i64
%cond = icmp slt i64 %src1, %src2
br i1 %cond, label %exit, label %mulb
mulb:
%mul = mul i64 %src2, %src2
br label %exit
exit:
%res = phi i64 [ %src2, %entry ], [ %mul, %mulb ]
ret i64 %res
}