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.
140 lines
4.0 KiB
LLVM
140 lines
4.0 KiB
LLVM
; Test 8-bit atomic NANDs.
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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 NAND 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 i8 @f1(ptr %src, i8 %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: xilf [[ROT]], 4278190080
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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]], 8(%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, 24
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; CHECK-SHIFT2: oilf %r3, 16777215
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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 nand ptr %src, i8 %b seq_cst
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ret i8 %res
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}
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; Check the minimum signed value. We AND the rotated word with 0x80ffffff.
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define i8 @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]], 33023
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; CHECK: xilf [[ROT]], 4278190080
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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]], 8(%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 nand ptr %src, i8 -128 seq_cst
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ret i8 %res
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}
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; Check NANDs of -2 (-1 isn't useful). We AND the rotated word with 0xfeffffff.
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define i8 @f3(ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: nilh [[ROT]], 65279
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; CHECK: xilf [[ROT]], 4278190080
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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 nand ptr %src, i8 -2 seq_cst
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ret i8 %res
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}
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; Check NANDs of 1. We AND the rotated word with 0x01ffffff.
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define i8 @f4(ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: nilh [[ROT]], 511
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; CHECK: xilf [[ROT]], 4278190080
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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 nand ptr %src, i8 1 seq_cst
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ret i8 %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 i8 @f5(ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: nilh [[ROT]], 32767
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; CHECK: xilf [[ROT]], 4278190080
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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 nand ptr %src, i8 127 seq_cst
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ret i8 %res
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}
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; Check NANDs of a large unsigned value. We AND the rotated word with
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; 0xfdffffff.
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define i8 @f6(ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: nilh [[ROT]], 65023
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; CHECK: xilf [[ROT]], 4278190080
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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 nand ptr %src, i8 253 seq_cst
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ret i8 %res
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}
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