derek.holloway
7502bf64a4
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68 lines
1.5 KiB
LLVM
68 lines
1.5 KiB
LLVM
; Test 64-bit addition in which the second operand is constant and in which
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; three-operand forms are available.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
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; Check additions of 1.
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define i64 @f1(i64 %a, i64 %b) {
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; CHECK-LABEL: f1:
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; CHECK: {{aghik %r2, %r3, 1|la %r2, 1\(%r3\)}}
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; CHECK: br %r14
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%add = add i64 %b, 1
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ret i64 %add
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}
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; Check the high end of the AGHIK range.
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define i64 @f2(i64 %a, i64 %b) {
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; CHECK-LABEL: f2:
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; CHECK: aghik %r2, %r3, 32767
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; CHECK: br %r14
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%add = add i64 %b, 32767
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ret i64 %add
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}
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; Check the next value up, which must use AGFI instead.
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define i64 @f3(i64 %a, i64 %b) {
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; CHECK-LABEL: f3:
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; CHECK: {{agfi %r[0-5], 32768|lay %r2, 32768\(%r3\)}}
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; CHECK: br %r14
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%add = add i64 %b, 32768
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ret i64 %add
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}
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; Check the high end of the negative AGHIK range.
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define i64 @f4(i64 %a, i64 %b) {
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; CHECK-LABEL: f4:
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; CHECK: aghik %r2, %r3, -1
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; CHECK: br %r14
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%add = add i64 %b, -1
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ret i64 %add
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}
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; Check the low end of the AGHIK range.
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define i64 @f5(i64 %a, i64 %b) {
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; CHECK-LABEL: f5:
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; CHECK: aghik %r2, %r3, -32768
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; CHECK: br %r14
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%add = add i64 %b, -32768
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ret i64 %add
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}
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; Check the next value down, which must use AGFI instead.
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define i64 @f6(i64 %a, i64 %b) {
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; CHECK-LABEL: f6:
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; CHECK: {{agfi %r[0-5], -32769|lay %r2, -32769\(%r3\)}}
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; CHECK: br %r14
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%add = add i64 %b, -32769
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ret i64 %add
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}
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; Check that AGHI is still used in obvious cases.
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define i64 @f7(i64 %a) {
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; CHECK-LABEL: f7:
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; CHECK: aghi %r2, 32000
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; CHECK: br %r14
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%add = add i64 %a, 32000
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ret i64 %add
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}
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