derek.holloway
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66 lines
2.1 KiB
LLVM
66 lines
2.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
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; Test 256-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(i256 %a, i256 %b, ptr %res) {
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; CHECK-LABEL: f1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vl %v2, 16(%r3), 3
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; CHECK-NEXT: vl %v3, 16(%r2), 3
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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 %v4, %v3, %v2
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; CHECK-NEXT: vsbcbiq %v5, %v1, %v0, %v4
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; CHECK-NEXT: vlgvg %r2, %v5, 1
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; CHECK-NEXT: vsbiq %v0, %v1, %v0, %v4
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; CHECK-NEXT: vsq %v1, %v3, %v2
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; CHECK-NEXT: xilf %r2, 1
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; CHECK-NEXT: vst %v1, 16(%r4), 3
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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 {i256, i1} @llvm.usub.with.overflow.i256(i256 %a, i256 %b)
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%val = extractvalue {i256, i1} %t, 0
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%obit = extractvalue {i256, i1} %t, 1
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store i256 %val, ptr %res
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ret i1 %obit
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}
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define zeroext i1 @f2(i256 %a, i256 %b) {
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; CHECK-LABEL: f2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vl %v2, 16(%r3), 3
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; CHECK-NEXT: vl %v3, 16(%r2), 3
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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, %v3, %v2
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; CHECK-NEXT: vsbcbiq %v0, %v1, %v0, %v2
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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 {i256, i1} @llvm.usub.with.overflow.i256(i256 %a, i256 %b)
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%obit = extractvalue {i256, i1} %t, 1
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ret i1 %obit
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}
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define i256 @f3(i256 %a, i256 %b) {
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; CHECK-LABEL: f3:
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; CHECK: # %bb.0:
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; CHECK-NEXT: vl %v2, 16(%r4), 3
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; CHECK-NEXT: vl %v3, 16(%r3), 3
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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 %v4, %v3, %v2
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; CHECK-NEXT: vsbiq %v0, %v1, %v0, %v4
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; CHECK-NEXT: vsq %v1, %v3, %v2
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; CHECK-NEXT: vst %v1, 16(%r2), 3
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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 {i256, i1} @llvm.usub.with.overflow.i256(i256 %a, i256 %b)
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%val = extractvalue {i256, i1} %t, 0
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ret i256 %val
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}
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declare {i256, i1} @llvm.usub.with.overflow.i256(i256, i256) nounwind readnone
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