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120
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1 ; RUN: llc -march=hexagon -enable-save-restore-long < %s | FileCheck %s
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2
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3 ; Check that the -long-calls feature is supported by the backend.
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4
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5 ; CHECK: call ##foo
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6 ; CHECK: jump ##__restore
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7 define i64 @test_longcall(i32 %x, i32 %y) #0 {
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8 entry:
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9 %add = add nsw i32 %x, 5
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10 %call = tail call i64 @foo(i32 %add) #6
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11 %conv = sext i32 %y to i64
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12 %add1 = add nsw i64 %call, %conv
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13 ret i64 %add1
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14 }
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15
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16 ; CHECK: jump ##foo
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17 define i64 @test_longtailcall(i32 %x, i32 %y) #1 {
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18 entry:
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19 %add = add nsw i32 %x, 5
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20 %call = tail call i64 @foo(i32 %add) #6
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21 ret i64 %call
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22 }
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23
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24 ; CHECK: call ##bar
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25 define i64 @test_longnoret(i32 %x, i32 %y) #2 {
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26 entry:
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27 %add = add nsw i32 %x, 5
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28 %0 = tail call i64 @bar(i32 %add) #7
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29 unreachable
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30 }
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31
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32 ; CHECK: call foo
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33 ; CHECK: jump ##__restore
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34 ; The restore call will still be long because of the enable-save-restore-long
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35 ; option being used.
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36 define i64 @test_shortcall(i32 %x, i32 %y) #3 {
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37 entry:
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38 %add = add nsw i32 %x, 5
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39 %call = tail call i64 @foo(i32 %add) #6
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40 %conv = sext i32 %y to i64
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41 %add1 = add nsw i64 %call, %conv
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42 ret i64 %add1
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43 }
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44
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45 ; CHECK: jump foo
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46 define i64 @test_shorttailcall(i32 %x, i32 %y) #4 {
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47 entry:
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48 %add = add nsw i32 %x, 5
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49 %call = tail call i64 @foo(i32 %add) #6
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50 ret i64 %call
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51 }
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52
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53 ; CHECK: call bar
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54 define i64 @test_shortnoret(i32 %x, i32 %y) #5 {
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55 entry:
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56 %add = add nsw i32 %x, 5
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57 %0 = tail call i64 @bar(i32 %add) #7
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58 unreachable
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59 }
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60
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61 declare i64 @foo(i32) #6
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62 declare i64 @bar(i32) #7
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63
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64 attributes #0 = { minsize nounwind "target-cpu"="hexagonv60" "target-features"="+long-calls" }
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65 attributes #1 = { nounwind "target-cpu"="hexagonv60" "target-features"="+long-calls" }
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66 attributes #2 = { noreturn nounwind "target-cpu"="hexagonv60" "target-features"="+long-calls" }
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67
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68 attributes #3 = { minsize nounwind "target-cpu"="hexagonv60" "target-features"="-long-calls" }
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69 attributes #4 = { nounwind "target-cpu"="hexagonv60" "target-features"="-long-calls" }
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70 attributes #5 = { noreturn nounwind "target-cpu"="hexagonv60" "target-features"="-long-calls" }
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71
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72 attributes #6 = { noreturn "target-cpu"="hexagonv60" }
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73 attributes #7 = { noreturn nounwind "target-cpu"="hexagonv60" }
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