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.
95 lines
2.2 KiB
LLVM
95 lines
2.2 KiB
LLVM
; Test 32-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 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: sr %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 sub ptr %src, i32 %b seq_cst
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ret i32 %res
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}
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; Check subtraction of 1, which can use AHI.
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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: ahi %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 sub ptr %src, i32 1 seq_cst
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ret i32 %res
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}
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; Check the low end of the AHI range.
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define i32 @f3(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f3:
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; CHECK: ahi %r0, -32768
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i32 32768 seq_cst
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ret i32 %res
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}
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; Check the next value down, which must use AFI.
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define i32 @f4(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f4:
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; CHECK: afi %r0, -32769
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i32 32769 seq_cst
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ret i32 %res
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}
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; Check the low end of the AFI range.
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define i32 @f5(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f5:
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; CHECK: afi %r0, -2147483648
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i32 2147483648 seq_cst
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ret i32 %res
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}
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; Check the next value up, which gets treated as a positive operand.
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define i32 @f6(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f6:
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; CHECK: afi %r0, 2147483647
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i32 2147483649 seq_cst
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ret i32 %res
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}
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; Check subtraction of -1, which can use AHI.
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define i32 @f7(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f7:
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; CHECK: ahi %r0, 1
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; CHECK: br %r14
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%res = atomicrmw sub ptr %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 AHI range.
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define i32 @f8(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f8:
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; CHECK: ahi %r0, 32767
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i32 -32767 seq_cst
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ret i32 %res
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}
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; Check the next value down, which must use AFI instead.
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define i32 @f9(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f9:
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; CHECK: afi %r0, 32768
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; CHECK: br %r14
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%res = atomicrmw sub ptr %src, i32 -32768 seq_cst
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ret i32 %res
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}
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