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7835f1fcdb
Add explicit testcases for tail calls within the same module. Duplicate some code to humor those who think .w doesn't apply on ARM. Leave this disabled on Thumb1, and add some comments explaining why it's hard and won't gain much. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107851 91177308-0d34-0410-b5e6-96231b3b80d8
38 lines
842 B
LLVM
38 lines
842 B
LLVM
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mattr=+thumb2 | FileCheck %s -check-prefix=DARWIN
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; RUN: llc < %s -mtriple=thumbv7-linux -mattr=+thumb2 | FileCheck %s -check-prefix=LINUX
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@t = weak global i32 ()* null ; <i32 ()**> [#uses=1]
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declare void @g(i32, i32, i32, i32)
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define void @f() {
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; DARWIN: f:
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; DARWIN: blx _g
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; LINUX: f:
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; LINUX: bl g
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tail call void @g( i32 1, i32 2, i32 3, i32 4 )
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ret void
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}
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define void @h() {
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; DARWIN: h:
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; DARWIN: bx r0 @ TAILCALL
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; LINUX: h:
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; LINUX: bx r0 @ TAILCALL
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%tmp = load i32 ()** @t ; <i32 ()*> [#uses=1]
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%tmp.upgrd.2 = tail call i32 %tmp( ) ; <i32> [#uses=0]
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ret void
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}
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define void @j() {
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; DARWIN: j:
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; DARWIN: b.w _f @ TAILCALL
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; LINUX: j:
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; LINUX: b.w f @ TAILCALL
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tail call void @f()
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ret void
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}
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