derek.holloway
7502bf64a4
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50 lines
1.1 KiB
LLVM
50 lines
1.1 KiB
LLVM
; Test 32-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 i32 @f1(i32 %dummy, ptr %src, i32 %b) {
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; CHECK-LABEL: f1:
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; CHECK: l %r2, 0(%r3)
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; CHECK: [[LABEL:\.[^ ]*]]:
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; CHECK: lr %r0, %r2
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; CHECK: xr %r0, %r4
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; CHECK: cs %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, i32 %b seq_cst
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ret i32 %res
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}
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; Check the lowest useful constant.
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define i32 @f2(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f2:
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; CHECK: l %r2, 0(%r3)
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; CHECK: [[LABEL:\.[^ ]*]]:
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; CHECK: lr %r0, %r2
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; CHECK: xilf %r0, 1
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; CHECK: cs %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, i32 1 seq_cst
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ret i32 %res
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}
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; Check an arbitrary constant.
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define i32 @f3(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: xilf %r0, 3000000000
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i32 3000000000 seq_cst
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ret i32 %res
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}
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; Check bitwise negation.
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define i32 @f4(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: xilf %r0, 4294967295
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; CHECK: br %r14
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%res = atomicrmw xor ptr %src, i32 -1 seq_cst
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ret i32 %res
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}
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