53 lines
1.6 KiB
LLVM
53 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=m68k -verify-machineinstrs | FileCheck %s
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declare {i32, i1} @llvm.umul.with.overflow.i32(i32 %a, i32 %b)
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define i1 @a(i32 %x) nounwind {
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; CHECK-LABEL: a:
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; CHECK: ; %bb.0:
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; CHECK-NEXT: suba.l #20, %sp
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; CHECK-NEXT: move.l #3, (12,%sp)
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; CHECK-NEXT: move.l #0, (8,%sp)
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; CHECK-NEXT: move.l (24,%sp), (4,%sp)
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; CHECK-NEXT: move.l #0, (%sp)
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; CHECK-NEXT: jsr __muldi3@PLT
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; CHECK-NEXT: cmpi.l #0, %d0
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; CHECK-NEXT: sne %d0
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; CHECK-NEXT: adda.l #20, %sp
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; CHECK-NEXT: rts
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%res = call {i32, i1} @llvm.umul.with.overflow.i32(i32 %x, i32 3)
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%obil = extractvalue {i32, i1} %res, 1
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ret i1 %obil
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}
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define i32 @test2(i32 %a, i32 %b) nounwind readnone {
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; CHECK-LABEL: test2:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: move.l (8,%sp), %d0
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; CHECK-NEXT: add.l (4,%sp), %d0
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; CHECK-NEXT: add.l %d0, %d0
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; CHECK-NEXT: rts
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entry:
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%tmp0 = add i32 %b, %a
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%tmp1 = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %tmp0, i32 2)
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%tmp2 = extractvalue { i32, i1 } %tmp1, 0
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ret i32 %tmp2
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}
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; It shouldn't fallback to builtin in this scenario
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; Since we don't need the overflow bit here
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define i32 @test3(i32 %a, i32 %b) nounwind readnone {
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; CHECK-LABEL: test3:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: move.l (8,%sp), %d0
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; CHECK-NEXT: add.l (4,%sp), %d0
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; CHECK-NEXT: lsl.l #2, %d0
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; CHECK-NEXT: rts
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entry:
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%tmp0 = add i32 %b, %a
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%tmp1 = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %tmp0, i32 4)
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%tmp2 = extractvalue { i32, i1 } %tmp1, 0
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ret i32 %tmp2
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}
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