134 lines
3.8 KiB
LLVM
134 lines
3.8 KiB
LLVM
; Test 16-bit atomic ANDs.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT1
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT2
|
|
|
|
; Check AND of a variable.
|
|
; - CHECK is for the main loop.
|
|
; - CHECK-SHIFT1 makes sure that the negated shift count used by the second
|
|
; RLL is set up correctly. The negation is independent of the NILL and L
|
|
; tested in CHECK.
|
|
; - CHECK-SHIFT2 makes sure that %b is shifted into the high part of the word
|
|
; before being used, and that the low bits are set to 1. This sequence is
|
|
; independent of the other loop prologue instructions.
|
|
define i16 @f1(i16 *%src, i16 %b) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
|
|
; CHECK-DAG: sll %r2, 3
|
|
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
|
|
; CHECK: [[LABEL:\.[^:]*]]:
|
|
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
|
|
; CHECK: nr [[ROT]], %r3
|
|
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
|
|
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
|
|
; CHECK: jl [[LABEL]]
|
|
; CHECK: rll %r2, [[OLD]], 16(%r2)
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f1:
|
|
; CHECK-SHIFT1: sll %r2, 3
|
|
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], %r2
|
|
; CHECK-SHIFT1: rll
|
|
; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
|
|
; CHECK-SHIFT1: rll
|
|
; CHECK-SHIFT1: br %r14
|
|
;
|
|
; CHECK-SHIFT2-LABEL: f1:
|
|
; CHECK-SHIFT2: sll %r3, 16
|
|
; CHECK-SHIFT2: oill %r3, 65535
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: nr {{%r[0-9]+}}, %r3
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw and i16 *%src, i16 %b seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check the minimum signed value. We AND the rotated word with 0x8000ffff.
|
|
define i16 @f2(i16 *%src) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
|
|
; CHECK-DAG: sll %r2, 3
|
|
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
|
|
; CHECK: [[LABEL:\.[^:]*]]:
|
|
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
|
|
; CHECK: nilh [[ROT]], 32768
|
|
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]])
|
|
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
|
|
; CHECK: jl [[LABEL]]
|
|
; CHECK: rll %r2, [[OLD]], 16(%r2)
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f2:
|
|
; CHECK-SHIFT1: sll %r2, 3
|
|
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], %r2
|
|
; CHECK-SHIFT1: rll
|
|
; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
|
|
; CHECK-SHIFT1: rll
|
|
; CHECK-SHIFT1: br %r14
|
|
;
|
|
; CHECK-SHIFT2-LABEL: f2:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw and i16 *%src, i16 -32768 seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check ANDs of -2 (-1 isn't useful). We AND the rotated word with 0xfffeffff.
|
|
define i16 @f3(i16 *%src) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: nilh [[ROT]], 65534
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f3:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f3:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw and i16 *%src, i16 -2 seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check ANDs of 1. We AND the rotated word with 0x0001ffff.
|
|
define i16 @f4(i16 *%src) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: nilh [[ROT]], 1
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f4:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f4:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw and i16 *%src, i16 1 seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check the maximum signed value. We AND the rotated word with 0x7fffffff.
|
|
define i16 @f5(i16 *%src) {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK: nilh [[ROT]], 32767
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f5:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f5:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw and i16 *%src, i16 32767 seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check ANDs of a large unsigned value. We AND the rotated word with
|
|
; 0xfffdffff.
|
|
define i16 @f6(i16 *%src) {
|
|
; CHECK-LABEL: f6:
|
|
; CHECK: nilh [[ROT]], 65533
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f6:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f6:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw and i16 *%src, i16 65533 seq_cst
|
|
ret i16 %res
|
|
}
|