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.
113 lines
2.7 KiB
LLVM
113 lines
2.7 KiB
LLVM
; Test 64-bit atomic subtractions.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
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; Check subtraction of a variable.
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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: lgr %r0, %r2
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; CHECK: sgr %r0, %r4
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; CHECK: csg %r2, %r0, 0(%r3)
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; CHECK: jl [[LABEL]]
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 %b seq_cst
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ret i64 %res
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}
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; Check subtraction of 1, which can use AGHI.
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define i64 @f2(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f2:
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; CHECK: lg %r2, 0(%r3)
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK: lgr %r0, %r2
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; CHECK: aghi %r0, -1
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; CHECK: csg %r2, %r0, 0(%r3)
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; CHECK: jl [[LABEL]]
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 1 seq_cst
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ret i64 %res
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}
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; Check the low end of the AGHI range.
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define i64 @f3(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: aghi %r0, -32768
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 32768 seq_cst
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ret i64 %res
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}
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; Check the next value up, which must use AGFI.
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define i64 @f4(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: agfi %r0, -32769
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 32769 seq_cst
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ret i64 %res
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}
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; Check the low end of the AGFI range.
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define i64 @f5(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: agfi %r0, -2147483648
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 2147483648 seq_cst
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ret i64 %res
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}
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; Check the next value up, which must use a register operation.
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define i64 @f6(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: sgr
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 2147483649 seq_cst
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ret i64 %res
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}
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; Check subtraction of -1, which can use AGHI.
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define i64 @f7(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f7:
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; CHECK: aghi %r0, 1
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 -1 seq_cst
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ret i64 %res
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}
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; Check the high end of the AGHI range.
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define i64 @f8(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f8:
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; CHECK: aghi %r0, 32767
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 -32767 seq_cst
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ret i64 %res
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}
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; Check the next value down, which must use AGFI instead.
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define i64 @f9(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f9:
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; CHECK: agfi %r0, 32768
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 -32768 seq_cst
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ret i64 %res
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}
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; Check the high end of the AGFI range.
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define i64 @f10(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f10:
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; CHECK: agfi %r0, 2147483647
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 -2147483647 seq_cst
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ret i64 %res
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}
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; Check the next value down, which must use a register operation.
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define i64 @f11(i64 %dummy, ptr %src) {
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; CHECK-LABEL: f11:
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; CHECK: sgr
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i64 -2147483648 seq_cst
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ret i64 %res
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}
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