a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
134 lines
3.8 KiB
LLVM
134 lines
3.8 KiB
LLVM
; Test 16-bit atomic ANDs.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT1
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s -check-prefix=CHECK-SHIFT2
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; Check AND of a variable.
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; - CHECK is for the main loop.
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; - CHECK-SHIFT1 makes sure that the negated shift count used by the second
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; RLL is set up correctly. The negation is independent of the NILL and L
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; tested in CHECK.
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; - CHECK-SHIFT2 makes sure that %b is shifted into the high part of the word
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; before being used, and that the low bits are set to 1. This sequence is
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; independent of the other loop prologue instructions.
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define i16 @f1(ptr %src, i16 %b) {
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; CHECK-LABEL: f1:
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; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
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; CHECK-DAG: sll %r2, 3
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; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
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; CHECK: nr [[ROT]], %r3
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; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0({{%r[1-9]+}})
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; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
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; CHECK: jl [[LABEL]]
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; CHECK: rll %r2, [[OLD]], 16(%r2)
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; CHECK: br %r14
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;
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; CHECK-SHIFT1-LABEL: f1:
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; CHECK-SHIFT1: sll %r2, 3
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; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], %r2
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; CHECK-SHIFT1: rll
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; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
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; CHECK-SHIFT1: rll
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; CHECK-SHIFT1: br %r14
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;
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; CHECK-SHIFT2-LABEL: f1:
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; CHECK-SHIFT2: sll %r3, 16
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; CHECK-SHIFT2: oill %r3, 65535
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; CHECK-SHIFT2: rll
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; CHECK-SHIFT2: nr {{%r[0-9]+}}, %r3
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; CHECK-SHIFT2: rll
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; CHECK-SHIFT2: rll
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; CHECK-SHIFT2: br %r14
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%res = atomicrmw and ptr %src, i16 %b seq_cst
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ret i16 %res
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}
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; Check the minimum signed value. We AND the rotated word with 0x8000ffff.
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define i16 @f2(ptr %src) {
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; CHECK-LABEL: f2:
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; CHECK: risbg [[RISBG:%r[1-9]+]], %r2, 0, 189, 0{{$}}
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; CHECK-DAG: sll %r2, 3
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; CHECK-DAG: l [[OLD:%r[0-9]+]], 0([[RISBG]])
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK: rll [[ROT:%r[0-9]+]], [[OLD]], 0(%r2)
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; CHECK: nilh [[ROT]], 32768
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; CHECK: rll [[NEW:%r[0-9]+]], [[ROT]], 0([[NEGSHIFT:%r[1-9]+]])
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; CHECK: cs [[OLD]], [[NEW]], 0([[RISBG]])
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; CHECK: jl [[LABEL]]
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; CHECK: rll %r2, [[OLD]], 16(%r2)
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; CHECK: br %r14
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;
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; CHECK-SHIFT1-LABEL: f2:
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; CHECK-SHIFT1: sll %r2, 3
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; CHECK-SHIFT1: lcr [[NEGSHIFT:%r[1-9]+]], %r2
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; CHECK-SHIFT1: rll
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; CHECK-SHIFT1: rll {{%r[0-9]+}}, {{%r[0-9]+}}, 0([[NEGSHIFT]])
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; CHECK-SHIFT1: rll
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; CHECK-SHIFT1: br %r14
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;
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; CHECK-SHIFT2-LABEL: f2:
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; CHECK-SHIFT2: br %r14
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%res = atomicrmw and ptr %src, i16 -32768 seq_cst
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ret i16 %res
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}
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; Check ANDs of -2 (-1 isn't useful). We AND the rotated word with 0xfffeffff.
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define i16 @f3(ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: nilh [[ROT]], 65534
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; CHECK: br %r14
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;
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; CHECK-SHIFT1-LABEL: f3:
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; CHECK-SHIFT1: br %r14
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; CHECK-SHIFT2-LABEL: f3:
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; CHECK-SHIFT2: br %r14
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%res = atomicrmw and ptr %src, i16 -2 seq_cst
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ret i16 %res
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}
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; Check ANDs of 1. We AND the rotated word with 0x0001ffff.
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define i16 @f4(ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: nilh [[ROT]], 1
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; CHECK: br %r14
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;
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; CHECK-SHIFT1-LABEL: f4:
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; CHECK-SHIFT1: br %r14
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; CHECK-SHIFT2-LABEL: f4:
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; CHECK-SHIFT2: br %r14
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%res = atomicrmw and ptr %src, i16 1 seq_cst
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ret i16 %res
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}
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; Check the maximum signed value. We AND the rotated word with 0x7fffffff.
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define i16 @f5(ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: nilh [[ROT]], 32767
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; CHECK: br %r14
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;
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; CHECK-SHIFT1-LABEL: f5:
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; CHECK-SHIFT1: br %r14
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; CHECK-SHIFT2-LABEL: f5:
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; CHECK-SHIFT2: br %r14
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%res = atomicrmw and ptr %src, i16 32767 seq_cst
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ret i16 %res
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}
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; Check ANDs of a large unsigned value. We AND the rotated word with
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; 0xfffdffff.
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define i16 @f6(ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: nilh [[ROT]], 65533
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; CHECK: br %r14
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;
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; CHECK-SHIFT1-LABEL: f6:
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; CHECK-SHIFT1: br %r14
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; CHECK-SHIFT2-LABEL: f6:
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; CHECK-SHIFT2: br %r14
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%res = atomicrmw and ptr %src, i16 65533 seq_cst
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ret i16 %res
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}
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