225 lines
6.5 KiB
LLVM
225 lines
6.5 KiB
LLVM
; Test 8-bit atomic min/max operations.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -disable-block-placement | FileCheck %s
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -disable-block-placement | FileCheck %s -check-prefix=CHECK-SHIFT1
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -disable-block-placement | FileCheck %s -check-prefix=CHECK-SHIFT2
|
|
|
|
; Check signed minimum.
|
|
; - 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 i8 @f1(i8 *%src, i8 %b) {
|
|
; CHECK-LABEL: f1:
|
|
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
|
|
; CHECK-DAG: sll %r2, 3
|
|
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
|
|
; CHECK: [[LOOP:\.[^:]*]]:
|
|
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
|
|
; CHECK: crjle [[ROT]], %r3, [[KEEP:\..*]]
|
|
; CHECK: risbg [[ROT]], %r3, 32, 39, 0
|
|
; CHECK: [[KEEP]]:
|
|
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
|
|
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
|
|
; CHECK: jl [[LOOP]]
|
|
; CHECK: rll %r2, [[OLD]], 8(%r2)
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f1:
|
|
; CHECK-SHIFT1: sll %r2, 3
|
|
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], %r2
|
|
; CHECK-SHIFT1: rll
|
|
; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
|
|
; CHECK-SHIFT1: rll
|
|
; CHECK-SHIFT1: br %r14
|
|
;
|
|
; CHECK-SHIFT2-LABEL: f1:
|
|
; CHECK-SHIFT2: sll %r3, 24
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: crjle {{%r[0-9]+}}, %r3
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw min i8 *%src, i8 %b seq_cst
|
|
ret i8 %res
|
|
}
|
|
|
|
; Check signed maximum.
|
|
define i8 @f2(i8 *%src, i8 %b) {
|
|
; CHECK-LABEL: f2:
|
|
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
|
|
; CHECK-DAG: sll %r2, 3
|
|
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
|
|
; CHECK: [[LOOP:\.[^:]*]]:
|
|
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
|
|
; CHECK: crjhe [[ROT]], %r3, [[KEEP:\..*]]
|
|
; CHECK: risbg [[ROT]], %r3, 32, 39, 0
|
|
; CHECK: [[KEEP]]:
|
|
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
|
|
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
|
|
; CHECK: jl [[LOOP]]
|
|
; CHECK: rll %r2, [[OLD]], 8(%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: sll %r3, 24
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: crjhe {{%r[0-9]+}}, %r3
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw max i8 *%src, i8 %b seq_cst
|
|
ret i8 %res
|
|
}
|
|
|
|
; Check unsigned minimum.
|
|
define i8 @f3(i8 *%src, i8 %b) {
|
|
; CHECK-LABEL: f3:
|
|
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
|
|
; CHECK-DAG: sll %r2, 3
|
|
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
|
|
; CHECK: [[LOOP:\.[^:]*]]:
|
|
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
|
|
; CHECK: clrjle [[ROT]], %r3, [[KEEP:\..*]]
|
|
; CHECK: risbg [[ROT]], %r3, 32, 39, 0
|
|
; CHECK: [[KEEP]]:
|
|
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
|
|
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
|
|
; CHECK: jl [[LOOP]]
|
|
; CHECK: rll %r2, [[OLD]], 8(%r2)
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f3:
|
|
; CHECK-SHIFT1: sll %r2, 3
|
|
; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], %r2
|
|
; CHECK-SHIFT1: rll
|
|
; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
|
|
; CHECK-SHIFT1: rll
|
|
; CHECK-SHIFT1: br %r14
|
|
;
|
|
; CHECK-SHIFT2-LABEL: f3:
|
|
; CHECK-SHIFT2: sll %r3, 24
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: clrjle {{%r[0-9]+}}, %r3,
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw umin i8 *%src, i8 %b seq_cst
|
|
ret i8 %res
|
|
}
|
|
|
|
; Check unsigned maximum.
|
|
define i8 @f4(i8 *%src, i8 %b) {
|
|
; CHECK-LABEL: f4:
|
|
; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
|
|
; CHECK-DAG: sll %r2, 3
|
|
; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
|
|
; CHECK: [[LOOP:\.[^:]*]]:
|
|
; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
|
|
; CHECK: clrjhe [[ROT]], %r3, [[KEEP:\..*]]
|
|
; CHECK: risbg [[ROT]], %r3, 32, 39, 0
|
|
; CHECK: [[KEEP]]:
|
|
; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
|
|
; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
|
|
; CHECK: jl [[LOOP]]
|
|
; CHECK: rll %r2, [[OLD]], 8(%r2)
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f4:
|
|
; 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: f4:
|
|
; CHECK-SHIFT2: sll %r3, 24
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: clrjhe {{%r[0-9]+}}, %r3,
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: rll
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw umax i8 *%src, i8 %b seq_cst
|
|
ret i8 %res
|
|
}
|
|
|
|
; Check the lowest useful signed minimum value. We need to load 0x81000000
|
|
; into the source register.
|
|
define i8 @f5(i8 *%src) {
|
|
; CHECK-LABEL: f5:
|
|
; CHECK: llilh [[SRC2:%r[0-9]+]], 33024
|
|
; CHECK: crjle [[ROT:%r[0-9]+]], [[SRC2]]
|
|
; CHECK: risbg [[ROT]], [[SRC2]], 32, 39, 0
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f5:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f5:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw min i8 *%src, i8 -127 seq_cst
|
|
ret i8 %res
|
|
}
|
|
|
|
; Check the highest useful signed maximum value. We need to load 0x7e000000
|
|
; into the source register.
|
|
define i8 @f6(i8 *%src) {
|
|
; CHECK-LABEL: f6:
|
|
; CHECK: llilh [[SRC2:%r[0-9]+]], 32256
|
|
; CHECK: crjhe [[ROT:%r[0-9]+]], [[SRC2]]
|
|
; CHECK: risbg [[ROT]], [[SRC2]], 32, 39, 0
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f6:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f6:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw max i8 *%src, i8 126 seq_cst
|
|
ret i8 %res
|
|
}
|
|
|
|
; Check the lowest useful unsigned minimum value. We need to load 0x01000000
|
|
; into the source register.
|
|
define i8 @f7(i8 *%src) {
|
|
; CHECK-LABEL: f7:
|
|
; CHECK: llilh [[SRC2:%r[0-9]+]], 256
|
|
; CHECK: clrjle [[ROT:%r[0-9]+]], [[SRC2]],
|
|
; CHECK: risbg [[ROT]], [[SRC2]], 32, 39, 0
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f7:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f7:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw umin i8 *%src, i8 1 seq_cst
|
|
ret i8 %res
|
|
}
|
|
|
|
; Check the highest useful unsigned maximum value. We need to load 0xfe000000
|
|
; into the source register.
|
|
define i8 @f8(i8 *%src) {
|
|
; CHECK-LABEL: f8:
|
|
; CHECK: llilh [[SRC2:%r[0-9]+]], 65024
|
|
; CHECK: clrjhe [[ROT:%r[0-9]+]], [[SRC2]],
|
|
; CHECK: risbg [[ROT]], [[SRC2]], 32, 39, 0
|
|
; CHECK: br %r14
|
|
;
|
|
; CHECK-SHIFT1-LABEL: f8:
|
|
; CHECK-SHIFT1: br %r14
|
|
; CHECK-SHIFT2-LABEL: f8:
|
|
; CHECK-SHIFT2: br %r14
|
|
%res = atomicrmw umax i8 *%src, i8 254 seq_cst
|
|
ret i8 %res
|
|
}
|