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.
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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