forked from OSchip/llvm-project
133 lines
3.9 KiB
LLVM
133 lines
3.9 KiB
LLVM
; Test 16-bit atomic additions.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK
|
|
; 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 addition 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. This shift is independent of the other loop prologue
|
|
; instructions.
|
|
define i16 @f1(i16 *%src, i16 %b) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK-DAG: sllg [[SHIFT:%r[1-9]+]], %r2, 3
|
|
; CHECK-DAG: risbg [[BASE:%r[1-9]+]], %r2, 0, 189, 0
|
|
; CHECK: l [[OLD:%r[0-9]+]], 0([[BASE]])
|
|
; CHECK: [[LABEL:\.[^:]*]]:
|
|
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
|
|
; CHECK: ar [[ROT]], %r3
|
|
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
|
|
; CHECK: cs [[OLD]], [[NEW]], 0([[BASE]])
|
|
; CHECK: jlh [[LABEL]]
|
|
; CHECK: rll %r2, [[OLD]], 16([[SHIFT]])
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f1:
|
|
; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3
|
|
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]]
|
|
; 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: rll
|
|
; CHECK-SHIFT2: ar {{%r[0-9]+}}, %r3
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw add i16 *%src, i16 %b seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check the minimum signed value. We add 0x80000000 to the rotated word.
|
|
define i16 @f2(i16 *%src) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK-DAG: sllg [[SHIFT:%r[1-9]+]], %r2, 3
|
|
; CHECK-DAG: risbg [[BASE:%r[1-9]+]], %r2, 0, 189, 0
|
|
; CHECK: l [[OLD:%r[0-9]+]], 0([[BASE]])
|
|
; CHECK: [[LABEL:\.[^:]*]]:
|
|
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0([[SHIFT]])
|
|
; CHECK: afi [[ROT]], -2147483648
|
|
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]])
|
|
; CHECK: cs [[OLD]], [[NEW]], 0([[BASE]])
|
|
; CHECK: jlh [[LABEL]]
|
|
; CHECK: rll %r2, [[OLD]], 16([[SHIFT]])
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f2:
|
|
; CHECK-SHIFT1: sllg [[SHIFT:%r[1-9]+]], %r2, 3
|
|
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], [[SHIFT]]
|
|
; 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 add i16 *%src, i16 -32768 seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check addition of -1. We add 0xffff0000 to the rotated word.
|
|
define i16 @f3(i16 *%src) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: afi [[ROT]], -65536
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f3:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f3:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw add i16 *%src, i16 -1 seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check addition of 1. We add 0x00010000 to the rotated word.
|
|
define i16 @f4(i16 *%src) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: afi [[ROT]], 65536
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f4:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f4:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw add i16 *%src, i16 1 seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check the maximum signed value. We add 0x7fff0000 to the rotated word.
|
|
define i16 @f5(i16 *%src) {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK: afi [[ROT]], 2147418112
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f5:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f5:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw add i16 *%src, i16 32767 seq_cst
|
|
ret i16 %res
|
|
}
|
|
|
|
; Check addition of a large unsigned value. We add 0xfffe0000 to the
|
|
; rotated word, expressed as a negative AFI operand.
|
|
define i16 @f6(i16 *%src) {
|
|
; CHECK-LABEL: f6:
|
|
; CHECK: afi [[ROT]], -131072
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f6:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f6:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw add i16 *%src, i16 65534 seq_cst
|
|
ret i16 %res
|
|
}
|