derek.holloway
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73 lines
2.2 KiB
LLVM
73 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
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; Test 128-bit subtraction on z13 and higher
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
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define zeroext i1 @f1(i128 %a, i128 %b, ptr %res) {
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; CHECK-LABEL: f1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vl %v0, 0(%r3), 3
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; CHECK-NEXT: vl %v1, 0(%r2), 3
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; CHECK-NEXT: vscbiq %v2, %v1, %v0
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; CHECK-NEXT: vlgvg %r2, %v2, 1
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; CHECK-NEXT: vsq %v0, %v1, %v0
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; CHECK-NEXT: xilf %r2, 1
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; CHECK-NEXT: vst %v0, 0(%r4), 3
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; CHECK-NEXT: br %r14
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%t = call {i128, i1} @llvm.usub.with.overflow.i128(i128 %a, i128 %b)
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%val = extractvalue {i128, i1} %t, 0
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%obit = extractvalue {i128, i1} %t, 1
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store i128 %val, ptr %res
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ret i1 %obit
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}
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define zeroext i1 @f2(i128 %a, i128 %b) {
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; CHECK-LABEL: f2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vl %v0, 0(%r3), 3
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; CHECK-NEXT: vl %v1, 0(%r2), 3
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; CHECK-NEXT: vscbiq %v0, %v1, %v0
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; CHECK-NEXT: vlgvg %r2, %v0, 1
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; CHECK-NEXT: xilf %r2, 1
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; CHECK-NEXT: br %r14
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%t = call {i128, i1} @llvm.usub.with.overflow.i128(i128 %a, i128 %b)
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%obit = extractvalue {i128, i1} %t, 1
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ret i1 %obit
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}
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define i128 @f3(i128 %a, i128 %b) {
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; CHECK-LABEL: f3:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vl %v0, 0(%r4), 3
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; CHECK-NEXT: vl %v1, 0(%r3), 3
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; CHECK-NEXT: vsq %v0, %v1, %v0
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; CHECK-NEXT: vst %v0, 0(%r2), 3
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; CHECK-NEXT: br %r14
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%t = call {i128, i1} @llvm.usub.with.overflow.i128(i128 %a, i128 %b)
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%val = extractvalue {i128, i1} %t, 0
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ret i128 %val
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}
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define i128 @f4(i128 %a, i128 %b) {
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; CHECK-LABEL: f4:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vl %v0, 0(%r4), 3
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; CHECK-NEXT: vl %v1, 0(%r3), 3
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; CHECK-NEXT: vscbiq %v2, %v1, %v0
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; CHECK-NEXT: vlgvf %r0, %v2, 3
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; CHECK-NEXT: vgbm %v2, 0
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; CHECK-NEXT: xilf %r0, 1
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; CHECK-NEXT: jl .LBB3_2
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: vsq %v2, %v1, %v0
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; CHECK-NEXT: .LBB3_2:
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; CHECK-NEXT: vst %v2, 0(%r2), 3
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; CHECK-NEXT: br %r14
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%val = call i128 @llvm.usub.sat.i128(i128 %a, i128 %b)
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ret i128 %val
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}
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declare {i128, i1} @llvm.usub.with.overflow.i128(i128, i128) nounwind readnone
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declare i128 @llvm.usub.sat.i128(i128, i128) nounwind readnone
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