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.
133 lines
3.7 KiB
LLVM
133 lines
3.7 KiB
LLVM
; Test 16-bit atomic ORs.
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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 OR 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. This shift is independent of the other loop prologue
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; 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: or [[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: rll
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; CHECK-SHIFT2: or {{%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 or 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 OR the rotated word with 0x80000000.
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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: oilh [[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 or ptr %src, i16 -32768 seq_cst
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ret i16 %res
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}
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; Check ORs of -2 (-1 isn't useful). We OR the rotated word with 0xfffe0000.
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define i16 @f3(ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: oilh [[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 or ptr %src, i16 -2 seq_cst
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ret i16 %res
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}
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; Check ORs of 1. We OR the rotated word with 0x00010000.
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define i16 @f4(ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: oilh [[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 or 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 OR the rotated word with 0x7fff0000.
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define i16 @f5(ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: oilh [[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 or ptr %src, i16 32767 seq_cst
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ret i16 %res
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}
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; Check ORs of a large unsigned value. We OR the rotated word with
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; 0xfffd0000.
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define i16 @f6(ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: oilh [[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 or ptr %src, i16 65533 seq_cst
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ret i16 %res
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}
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