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[TRE] Merged several tests into the the test basic.ll.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185723 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Gottesman 2013-07-05 20:45:13 +00:00
parent 1276b39613
commit cd56727b55
5 changed files with 58 additions and 62 deletions
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58
test/Transforms/TailCallElim/basic.ll Normal file
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@ -0,0 +1,58 @@
; RUN: opt < %s -tailcallelim -S | FileCheck %s
declare void @noarg()
declare void @use(i32*)
; Trivial case. Mark @noarg with tail call.
define void @test0() {
; CHECK: tail call void @noarg()
call void @noarg()
ret void
}
; PR615. Make sure that we do not move the alloca so that it interferes with the tail call.
define i32 @test1() {
; CHECK: i32 @test1()
; CHECK-NEXT: alloca
%A = alloca i32 ; <i32*> [#uses=2]
store i32 5, i32* %A
call void @use(i32* %A)
%X = tail call i32 @test1() ; <i32> [#uses=1]
ret i32 %X
}
; This function contains intervening instructions which should be moved out of the way
define i32 @test2(i32 %X) {
; CHECK: i32 @test2
; CHECK-NOT: call
; CHECK: ret i32
entry:
%tmp.1 = icmp eq i32 %X, 0 ; <i1> [#uses=1]
br i1 %tmp.1, label %then.0, label %endif.0
then.0: ; preds = %entry
%tmp.4 = add i32 %X, 1 ; <i32> [#uses=1]
ret i32 %tmp.4
endif.0: ; preds = %entry
%tmp.10 = add i32 %X, -1 ; <i32> [#uses=1]
%tmp.8 = call i32 @test2(i32 %tmp.10) ; <i32> [#uses=1]
%DUMMY = add i32 %X, 1 ; <i32> [#uses=0]
ret i32 %tmp.8
}
; Though this case seems to be fairly unlikely to occur in the wild, someone
; plunked it into the demo script, so maybe they care about it.
define i32 @test3(i32 %c) {
; CHECK: i32 @test3
; CHECK-NOT: call
; CHECK: ret i32 0
entry:
%tmp.1 = icmp eq i32 %c, 0 ; <i1> [#uses=1]
br i1 %tmp.1, label %return, label %else
else: ; preds = %entry
%tmp.5 = add i32 %c, -1 ; <i32> [#uses=1]
%tmp.3 = call i32 @test3(i32 %tmp.5) ; <i32> [#uses=0]
ret i32 0
return: ; preds = %entry
ret i32 0
}

18
test/Transforms/TailCallElim/intervening-inst.ll
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@ -1,18 +0,0 @@
; This function contains intervening instructions which should be moved out of the way
; RUN: opt < %s -tailcallelim -S | FileCheck %s
define i32 @Test(i32 %X) {
entry:
%tmp.1 = icmp eq i32 %X, 0 ; <i1> [#uses=1]
br i1 %tmp.1, label %then.0, label %endif.0
then.0: ; preds = %entry
%tmp.4 = add i32 %X, 1 ; <i32> [#uses=1]
ret i32 %tmp.4
endif.0: ; preds = %entry
%tmp.10 = add i32 %X, -1 ; <i32> [#uses=1]
; CHECK-NOT: call
%tmp.8 = call i32 @Test( i32 %tmp.10 ) ; <i32> [#uses=1]
%DUMMY = add i32 %X, 1 ; <i32> [#uses=0]
ret i32 %tmp.8
}

15
test/Transforms/TailCallElim/move_alloca_for_tail_call.ll
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@ -1,15 +0,0 @@
; RUN: opt -tailcallelim -S < %s | FileCheck %s
; PR615
declare void @bar(i32*)
define i32 @foo() {
; CHECK: i32 @foo()
; CHECK-NEXT: alloca
%A = alloca i32 ; <i32*> [#uses=2]
store i32 17, i32* %A
call void @bar( i32* %A )
%X = tail call i32 @foo( ) ; <i32> [#uses=1]
ret i32 %X
}

18
test/Transforms/TailCallElim/return_constant.ll
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@ -1,18 +0,0 @@
; Though this case seems to be fairly unlikely to occur in the wild, someone
; plunked it into the demo script, so maybe they care about it.
;
; RUN: opt < %s -tailcallelim -S | FileCheck %s
define i32 @aaa(i32 %c) {
entry:
%tmp.1 = icmp eq i32 %c, 0 ; <i1> [#uses=1]
br i1 %tmp.1, label %return, label %else
else: ; preds = %entry
%tmp.5 = add i32 %c, -1 ; <i32> [#uses=1]
; CHECK-NOT: call
%tmp.3 = call i32 @aaa( i32 %tmp.5 ) ; <i32> [#uses=0]
ret i32 0
return: ; preds = %entry
ret i32 0
}

11
test/Transforms/TailCallElim/trivial_codegen_tailcall.ll
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@ -1,11 +0,0 @@
; RUN: opt < %s -tailcallelim -S | FileCheck %s
declare void @foo()
define void @bar() {
; CHECK: tail call void @foo()
call void @foo()
ret void
}