;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
-; There is no 64-bit AND instruction for a mask of 1.
-; FIXME: we ought to be able to require "ngr %r2, %r0", but at the moment,
-; two-address optimisations force "ngr %r0, %r2; lgr %r2, %r0" instead.
+; Use RISBG for a single bit.
define i64 @f1(i64 %a) {
-; CHECK: f1:
-; CHECK: lghi %r0, 1
-; CHECK: ngr
+; CHECK-LABEL: f1:
+; CHECK: risbg %r2, %r2, 63, 191, 0
; CHECK: br %r14
%and = and i64 %a, 1
ret i64 %and
; Likewise 0xfffe.
define i64 @f2(i64 %a) {
-; CHECK: f2:
-; CHECK: llill %r0, 65534
-; CHECK: ngr
+; CHECK-LABEL: f2:
+; CHECK: risbg %r2, %r2, 48, 190, 0
; CHECK: br %r14
%and = and i64 %a, 65534
ret i64 %and
}
; ...but 0xffff is a 16-bit zero extension.
-define i64 @f3(i64 %a) {
-; CHECK: f3:
-; CHECK: llghr %r2, %r2
+define i64 @f3(i64 %a, i64 %b) {
+; CHECK-LABEL: f3:
+; CHECK: llghr %r2, %r3
; CHECK: br %r14
- %and = and i64 %a, 65535
+ %and = and i64 %b, 65535
ret i64 %and
}
-; Check the next value up, which again has no dedicated instruction.
+; Check the next value up, which can again use RISBG.
define i64 @f4(i64 %a) {
-; CHECK: f4:
-; CHECK: llilh %r0, 1
-; CHECK: ngr
+; CHECK-LABEL: f4:
+; CHECK: risbg %r2, %r2, 47, 175, 0
; CHECK: br %r14
%and = and i64 %a, 65536
ret i64 %and
}
-; Check 0xfffffffe.
+; Check 0xfffffffe, which can also use RISBG.
define i64 @f5(i64 %a) {
-; CHECK: f5:
-; CHECK: lilf %r0, 4294967294
-; CHECK: ngr
+; CHECK-LABEL: f5:
+; CHECK: risbg %r2, %r2, 32, 190, 0
; CHECK: br %r14
%and = and i64 %a, 4294967294
ret i64 %and
}
; Check the next value up, which is a 32-bit zero extension.
-define i64 @f6(i64 %a) {
-; CHECK: f6:
-; CHECK: llgfr %r2, %r2
+define i64 @f6(i64 %a, i64 %b) {
+; CHECK-LABEL: f6:
+; CHECK: llgfr %r2, %r3
; CHECK: br %r14
- %and = and i64 %a, 4294967295
+ %and = and i64 %b, 4294967295
ret i64 %and
}
; Check the lowest useful NIHF value (0x00000001_ffffffff).
define i64 @f7(i64 %a) {
-; CHECK: f7:
+; CHECK-LABEL: f7:
; CHECK: nihf %r2, 1
; CHECK: br %r14
%and = and i64 %a, 8589934591
ret i64 %and
}
-; Check the low end of the NIHH range (0x0000ffff_ffffffff).
-define i64 @f8(i64 %a) {
-; CHECK: f8:
-; CHECK: nihh %r2, 0
+; ...but RISBG can be used if a three-address form is useful.
+define i64 @f8(i64 %a, i64 %b) {
+; CHECK-LABEL: f8:
+; CHECK: risbg %r2, %r3, 31, 191, 0
; CHECK: br %r14
- %and = and i64 %a, 281474976710655
+ %and = and i64 %b, 8589934591
ret i64 %and
}
-; Check the highest useful NIHH value (0xfffeffff_ffffffff).
+; Check the lowest NIHH value outside the RISBG range (0x0002ffff_ffffffff).
define i64 @f9(i64 %a) {
-; CHECK: f9:
-; CHECK: nihh %r2, 65534
+; CHECK-LABEL: f9:
+; CHECK: nihh %r2, 2
; CHECK: br %r14
- %and = and i64 %a, -281474976710657
+ %and = and i64 %a, 844424930131967
ret i64 %and
}
-; Check the highest useful NIHF value (0xfffefffe_ffffffff).
+; Check the highest NIHH value outside the RISBG range (0xfffaffff_ffffffff).
define i64 @f10(i64 %a) {
-; CHECK: f10:
-; CHECK: nihf %r2, 4294901758
+; CHECK-LABEL: f10:
+; CHECK: nihh %r2, 65530
; CHECK: br %r14
- %and = and i64 %a, -281479271677953
+ %and = and i64 %a, -1407374883553281
ret i64 %and
}
-; Check the low end of the NIHL range (0xffff0000_ffffffff).
+; Check the highest useful NIHF value (0xfffefffe_ffffffff).
define i64 @f11(i64 %a) {
-; CHECK: f11:
-; CHECK: nihl %r2, 0
+; CHECK-LABEL: f11:
+; CHECK: nihf %r2, 4294901758
; CHECK: br %r14
- %and = and i64 %a, -281470681743361
+ %and = and i64 %a, -281479271677953
ret i64 %and
}
-; Check the highest useful NIHL value (0xfffffffe_ffffffff).
+; Check the lowest NIHL value outside the RISBG range (0xffff0002_ffffffff).
define i64 @f12(i64 %a) {
-; CHECK: f12:
-; CHECK: nihl %r2, 65534
+; CHECK-LABEL: f12:
+; CHECK: nihl %r2, 2
; CHECK: br %r14
- %and = and i64 %a, -4294967297
+ %and = and i64 %a, -281462091808769
ret i64 %and
}
-; Check the low end of the NILF range (0xffffffff_00000000).
+; Check the highest NIHL value outside the RISBG range (0xfffffffa_ffffffff).
define i64 @f13(i64 %a) {
-; CHECK: f13:
-; CHECK: nilf %r2, 0
+; CHECK-LABEL: f13:
+; CHECK: nihl %r2, 65530
; CHECK: br %r14
- %and = and i64 %a, -4294967296
+ %and = and i64 %a, -21474836481
ret i64 %and
}
-; Check the low end of the NILH range (0xffffffff_0000ffff).
+; Check the lowest NILF value outside the RISBG range (0xffffffff_00000002).
define i64 @f14(i64 %a) {
-; CHECK: f14:
-; CHECK: nilh %r2, 0
+; CHECK-LABEL: f14:
+; CHECK: nilf %r2, 2
; CHECK: br %r14
- %and = and i64 %a, -4294901761
+ %and = and i64 %a, -4294967294
ret i64 %and
}
-; Check the next value up, which must use NILF.
+; Check the lowest NILH value outside the RISBG range (0xffffffff_0002ffff).
define i64 @f15(i64 %a) {
-; CHECK: f15:
-; CHECK: nilf %r2, 65536
+; CHECK-LABEL: f15:
+; CHECK: nilh %r2, 2
; CHECK: br %r14
- %and = and i64 %a, -4294901760
+ %and = and i64 %a, -4294770689
ret i64 %and
}
-; Check the maximum useful NILF value (0xffffffff_fffefffe).
+; Check the next value up, which must use NILF.
define i64 @f16(i64 %a) {
-; CHECK: f16:
-; CHECK: nilf %r2, 4294901758
+; CHECK-LABEL: f16:
+; CHECK: nilf %r2, 196608
; CHECK: br %r14
- %and = and i64 %a, -65538
+ %and = and i64 %a, -4294770688
ret i64 %and
}
-; Check the highest useful NILH value, which is one greater than the above.
+; Check the highest NILH value outside the RISBG range (0xffffffff_fffaffff).
define i64 @f17(i64 %a) {
-; CHECK: f17:
-; CHECK: nilh %r2, 65534
+; CHECK-LABEL: f17:
+; CHECK: nilh %r2, 65530
; CHECK: br %r14
- %and = and i64 %a, -65537
+ %and = and i64 %a, -327681
ret i64 %and
}
-; Check the low end of the NILL range, which is one greater again.
+; Check the maximum useful NILF value (0xffffffff_fffefffe).
define i64 @f18(i64 %a) {
-; CHECK: f18:
-; CHECK: nill %r2, 0
+; CHECK-LABEL: f18:
+; CHECK: nilf %r2, 4294901758
; CHECK: br %r14
- %and = and i64 %a, -65536
+ %and = and i64 %a, -65538
ret i64 %and
}
-; Check the highest useful NILL value.
+; Check the lowest NILL value outside the RISBG range (0xffffffff_ffff0002).
define i64 @f19(i64 %a) {
-; CHECK: f19:
-; CHECK: nill %r2, 65534
+; CHECK-LABEL: f19:
+; CHECK: nill %r2, 2
+; CHECK: br %r14
+ %and = and i64 %a, -65534
+ ret i64 %and
+}
+
+; Check the highest NILL value outside the RISBG range.
+define i64 @f20(i64 %a) {
+; CHECK-LABEL: f20:
+; CHECK: nill %r2, 65530
; CHECK: br %r14
- %and = and i64 %a, -2
+ %and = and i64 %a, -6
ret i64 %and
}
projects / oota-llvm.git / blobdiff