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9ee7a9a74c
This adds support for the main 128-bit atomic operations, using the SystemZ instructions LPQ, STPQ, and CDSG. Generating these instructions is a bit more complex than usual since the i128 type is not legal for the back-end. Therefore, we have to hook the LowerOperationWrapper and ReplaceNodeResults TargetLowering callbacks. llvm-svn: 310094
26 lines
606 B
LLVM
26 lines
606 B
LLVM
; Test 128-bit atomic stores.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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define void @f1(i128 %val, i128 *%src) {
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; CHECK-LABEL: f1:
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; CHECK-DAG: lg %r1, 8(%r2)
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; CHECK-DAG: lg %r0, 0(%r2)
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; CHECK: stpq %r0, 0(%r3)
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; CHECK: bcr 1{{[45]}}, %r0
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; CHECK: br %r14
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store atomic i128 %val, i128 *%src seq_cst, align 16
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ret void
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}
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define void @f2(i128 %val, i128 *%src) {
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; CHECK-LABEL: f2:
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; CHECK-DAG: lg %r1, 8(%r2)
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; CHECK-DAG: lg %r0, 0(%r2)
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; CHECK: stpq %r0, 0(%r3)
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; CHECK-NOT: bcr 1{{[45]}}, %r0
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; CHECK: br %r14
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store atomic i128 %val, i128 *%src monotonic, align 16
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ret void
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}
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