derek.holloway
7502bf64a4
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79 lines
1.9 KiB
LLVM
79 lines
1.9 KiB
LLVM
; Test 64-bit atomic XORs.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
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; Check XORs of a variable.
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define i64 @f1(i64 %dummy, ptr %src, i64 %b) {
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; CHECK-LABEL: f1:
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; CHECK: lg %r2, 0(%r3)
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; CHECK: [[LABEL:\.[^ ]*]]:
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; CHECK: lgr %r0, %r2
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; CHECK: xgr %r0, %r4
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; CHECK: csg %r2, %r0, 0(%r3)
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; CHECK: jl [[LABEL]]
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i64 %b seq_cst
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ret i64 %res
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}
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; Check the lowest useful XILF value.
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define i64 @f2(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f2:
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; CHECK: lg %r2, 0(%r3)
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; CHECK: [[LABEL:\.[^ ]*]]:
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; CHECK: lgr %r0, %r2
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; CHECK: xilf %r0, 1
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; CHECK: csg %r2, %r0, 0(%r3)
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; CHECK: jl [[LABEL]]
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i64 1 seq_cst
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ret i64 %res
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}
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; Check the high end of the XILF range.
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define i64 @f3(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: xilf %r0, 4294967295
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i64 4294967295 seq_cst
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ret i64 %res
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}
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; Check the lowest useful XIHF value, which is one greater than above.
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define i64 @f4(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: xihf %r0, 1
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i64 4294967296 seq_cst
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ret i64 %res
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}
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; Check the next value up.
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define i64 @f5(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: xihf %r0, 1
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; CHECK: xilf %r0, 1
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i64 4294967297 seq_cst
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ret i64 %res
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}
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; Check the high end of the XIHF range.
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define i64 @f6(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: xihf %r0, 4294967295
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i64 -4294967296 seq_cst
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ret i64 %res
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}
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; Check the next value up, which must use a register.
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define i64 @f7(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f7:
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; CHECK: xihf %r0, 4294967295
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; CHECK: xilf %r0, 1
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i64 -4294967295 seq_cst
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ret i64 %res
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}
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