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.
89 lines
2.4 KiB
LLVM
89 lines
2.4 KiB
LLVM
; Test 64-bit atomic exchange.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check register exchange.
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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: csg %r2, %r4, 0(%r3)
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; CHECK: jl [[LABEL]]
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; CHECK: br %r14
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%res = atomicrmw xchg ptr %src, i64 %b seq_cst
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ret i64 %res
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}
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; Check the high end of the aligned CSG range.
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define i64 @f2(i64 %dummy, ptr %src, i64 %b) {
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; CHECK-LABEL: f2:
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; CHECK: lg %r2, 524280(%r3)
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; CHECK: csg %r2, {{%r[0-9]+}}, 524280(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 65535
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%res = atomicrmw xchg ptr %ptr, i64 %b seq_cst
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ret i64 %res
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}
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; Check the next doubleword up, which requires separate address logic.
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define i64 @f3(i64 %dummy, ptr %src, i64 %b) {
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; CHECK-LABEL: f3:
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; CHECK: agfi %r3, 524288
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; CHECK: lg %r2, 0(%r3)
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; CHECK: csg %r2, {{%r[0-9]+}}, 0(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 65536
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%res = atomicrmw xchg ptr %ptr, i64 %b seq_cst
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ret i64 %res
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}
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; Check the low end of the CSG range.
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define i64 @f4(i64 %dummy, ptr %src, i64 %b) {
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; CHECK-LABEL: f4:
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; CHECK: lg %r2, -524288(%r3)
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; CHECK: csg %r2, {{%r[0-9]+}}, -524288(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 -65536
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%res = atomicrmw xchg ptr %ptr, i64 %b seq_cst
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ret i64 %res
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}
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; Check the next doubleword down, which requires separate address logic.
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define i64 @f5(i64 %dummy, ptr %src, i64 %b) {
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; CHECK-LABEL: f5:
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; CHECK: agfi %r3, -524296
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; CHECK: lg %r2, 0(%r3)
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; CHECK: csg %r2, {{%r[0-9]+}}, 0(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i64, ptr %src, i64 -65537
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%res = atomicrmw xchg ptr %ptr, i64 %b seq_cst
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ret i64 %res
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}
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; Check that indexed addresses are not allowed.
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define i64 @f6(i64 %dummy, i64 %base, i64 %index, i64 %b) {
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; CHECK-LABEL: f6:
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; CHECK: agr %r3, %r4
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; CHECK: lg %r2, 0(%r3)
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; CHECK: csg %r2, {{%r[0-9]+}}, 0(%r3)
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; CHECK: br %r14
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%add = add i64 %base, %index
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%ptr = inttoptr i64 %add to ptr
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%res = atomicrmw xchg ptr %ptr, i64 %b seq_cst
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ret i64 %res
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}
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; Check exchange of a constant. We should force it into a register and
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; use the sequence above.
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define i64 @f7(i64 %dummy, ptr %ptr) {
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; CHECK-LABEL: f7:
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; CHECK-DAG: llilf [[VALUE:%r[0-9+]]], 3000000000
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; CHECK-DAG: lg %r2, 0(%r3)
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK: csg %r2, [[VALUE]], 0(%r3)
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; CHECK: jl [[LABEL]]
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; CHECK: br %r14
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%res = atomicrmw xchg ptr %ptr, i64 3000000000 seq_cst
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ret i64 %res
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}
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