70 lines
1.9 KiB
LLVM
70 lines
1.9 KiB
LLVM
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; Test 32-bit atomic subtractions, z196 version.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
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; Check addition of a variable.
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define i32 @f1(i32 %dummy, i32 *%src, i32 %b) {
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; CHECK-LABEL: f1:
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; CHECK: lcr [[NEG:%r[0-5]]], %r4
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; CHECK: laa %r2, [[NEG]], 0(%r3)
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; CHECK: br %r14
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%res = atomicrmw sub i32 *%src, i32 %b seq_cst
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ret i32 %res
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}
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; Check addition of 1, which needs a temporary.
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define i32 @f2(i32 %dummy, i32 *%src) {
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; CHECK-LABEL: f2:
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; CHECK: lhi [[TMP:%r[0-5]]], -1
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; CHECK: laa %r2, [[TMP]], 0(%r3)
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; CHECK: br %r14
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%res = atomicrmw sub i32 *%src, i32 1 seq_cst
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ret i32 %res
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}
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; Check the high end of the LAA range.
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define i32 @f3(i32 %dummy, i32 *%src, i32 %b) {
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; CHECK-LABEL: f3:
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; CHECK: lcr [[NEG:%r[0-5]]], %r4
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; CHECK: laa %r2, [[NEG]], 524284(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%src, i32 131071
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%res = atomicrmw sub i32 *%ptr, i32 %b seq_cst
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ret i32 %res
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}
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; Check the next word up, which needs separate address logic.
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define i32 @f4(i32 %dummy, i32 *%src, i32 %b) {
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; CHECK-LABEL: f4:
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; CHECK-DAG: lcr [[NEG:%r[0-5]]], %r4
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; CHECK-DAG: agfi %r3, 524288
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; CHECK: laa %r2, [[NEG]], 0(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%src, i32 131072
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%res = atomicrmw sub i32 *%ptr, i32 %b seq_cst
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ret i32 %res
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}
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; Check the low end of the LAA range.
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define i32 @f5(i32 %dummy, i32 *%src, i32 %b) {
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; CHECK-LABEL: f5:
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; CHECK: lcr [[NEG:%r[0-5]]], %r4
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; CHECK: laa %r2, [[NEG]], -524288(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%src, i32 -131072
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%res = atomicrmw sub i32 *%ptr, i32 %b seq_cst
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ret i32 %res
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}
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; Check the next word down, which needs separate address logic.
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define i32 @f6(i32 %dummy, i32 *%src, i32 %b) {
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; CHECK-LABEL: f6:
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; CHECK-DAG: lcr [[NEG:%r[0-5]]], %r4
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; CHECK-DAG: agfi %r3, -524292
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; CHECK: laa %r2, [[NEG]], 0(%r3)
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; CHECK: br %r14
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%ptr = getelementptr i32, i32 *%src, i32 -131073
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%res = atomicrmw sub i32 *%ptr, i32 %b seq_cst
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ret i32 %res
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}
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