derek.holloway
7502bf64a4
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94 lines
2.7 KiB
LLVM
94 lines
2.7 KiB
LLVM
; Test 128-bit addition when the distinct-operands facility is available.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
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; Test the case where both operands are in registers.
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define i64 @f1(i64 %a, i64 %b, i64 %c, i64 %d, ptr %ptr) {
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; CHECK-LABEL: f1:
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; CHECK: algrk %r2, %r4, %r5
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; CHECK: alcgr
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; CHECK: br %r14
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%x1 = insertelement <2 x i64> undef, i64 %b, i32 0
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%x2 = insertelement <2 x i64> %x1, i64 %c, i32 1
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%x = bitcast <2 x i64> %x2 to i128
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%y2 = insertelement <2 x i64> %x1, i64 %d, i32 1
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%y = bitcast <2 x i64> %y2 to i128
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%add = add i128 %x, %y
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%addv = bitcast i128 %add to <2 x i64>
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%high = extractelement <2 x i64> %addv, i32 0
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store i64 %high, ptr %ptr
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%low = extractelement <2 x i64> %addv, i32 1
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ret i64 %low
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}
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; Test addition of 1.
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define void @f2(i64 %a, i64 %b, ptr %ptr) {
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; CHECK-LABEL: f2:
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; CHECK: alghsik {{%r[0-5]}}, %r3, 1
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; CHECK: alcgr
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; CHECK: br %r14
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%x1 = insertelement <2 x i64> undef, i64 %a, i32 0
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%x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
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%x = bitcast <2 x i64> %x2 to i128
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%add = add i128 %x, 1
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store i128 %add, ptr %ptr
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ret void
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}
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; Test the upper end of the ALGHSIK range.
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define void @f3(i64 %a, i64 %b, ptr %ptr) {
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; CHECK-LABEL: f3:
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; CHECK: alghsik {{%r[0-5]}}, %r3, 32767
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; CHECK: alcgr
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; CHECK: br %r14
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%x1 = insertelement <2 x i64> undef, i64 %a, i32 0
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%x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
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%x = bitcast <2 x i64> %x2 to i128
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%add = add i128 %x, 32767
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store i128 %add, ptr %ptr
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ret void
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}
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; Test the next value up, which should use ALGFI instead.
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define void @f4(i64 %a, i64 %b, ptr %ptr) {
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; CHECK-LABEL: f4:
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; CHECK: algfi %r3, 32768
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; CHECK: alcgr
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; CHECK: br %r14
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%x1 = insertelement <2 x i64> undef, i64 %a, i32 0
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%x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
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%x = bitcast <2 x i64> %x2 to i128
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%add = add i128 %x, 32768
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store i128 %add, ptr %ptr
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ret void
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}
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; Test the lower end of the ALGHSIK range.
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define void @f5(i64 %a, i64 %b, ptr %ptr) {
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; CHECK-LABEL: f5:
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; CHECK: alghsik {{%r[0-5]}}, %r3, -32768
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; CHECK: alcgr
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; CHECK: br %r14
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%x1 = insertelement <2 x i64> undef, i64 %a, i32 0
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%x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
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%x = bitcast <2 x i64> %x2 to i128
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%add = add i128 %x, -32768
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store i128 %add, ptr %ptr
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ret void
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}
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; Test the next value down, which cannot use either ALGHSIK or ALGFI.
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define void @f6(i64 %a, i64 %b, ptr %ptr) {
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; CHECK-LABEL: f6:
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; CHECK-NOT: alghsik
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; CHECK-NOT: algfi
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; CHECK: alcgr
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; CHECK: br %r14
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%x1 = insertelement <2 x i64> undef, i64 %a, i32 0
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%x2 = insertelement <2 x i64> %x1, i64 %b, i32 1
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%x = bitcast <2 x i64> %x2 to i128
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%add = add i128 %x, -32769
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store i128 %add, ptr %ptr
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ret void
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}
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