llvm-6502/test/CodeGen/X86/tailcall-64.ll
Chris Lattner 5b0d946537 enhance getNoopInput to know about vector<->vector bitcasts of legal
types, as well as int<->ptr casts.  This allows us to tailcall functions
with some trivial casts between the call and return (i.e. because the
return types disagree).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157798 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-01 05:16:33 +00:00

44 lines
1.1 KiB
LLVM

; RUN: llc < %s | FileCheck %s
target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin11.4.0"
declare i64 @testi()
define i64 @test_trivial() {
%A = tail call i64 @testi()
ret i64 %A
}
; CHECK: test_trivial:
; CHECK: jmp _testi ## TAILCALL
define i64 @test_noop_bitcast() {
%A = tail call i64 @testi()
%B = bitcast i64 %A to i64
ret i64 %B
}
; CHECK: test_noop_bitcast:
; CHECK: jmp _testi ## TAILCALL
; Tail call shouldn't be blocked by no-op inttoptr.
define i8* @test_inttoptr() {
%A = tail call i64 @testi()
%B = inttoptr i64 %A to i8*
ret i8* %B
}
; CHECK: test_inttoptr:
; CHECK: jmp _testi ## TAILCALL
declare <4 x float> @testv()
define <4 x i32> @test_vectorbitcast() {
%A = tail call <4 x float> @testv()
%B = bitcast <4 x float> %A to <4 x i32>
ret <4 x i32> %B
}
; CHECK: test_vectorbitcast:
; CHECK: jmp _testv ## TAILCALL