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llvm-6502/test/CodeGen/Mips/tailcall.ll

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[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
; RUN: llc -march=mipsel -relocation-model=pic -enable-mips-tail-calls < %s | \
; RUN: FileCheck %s -check-prefix=PIC32
; RUN: llc -march=mipsel -relocation-model=static \
; RUN: -enable-mips-tail-calls < %s | FileCheck %s -check-prefix=STATIC32
; RUN: llc -march=mips64el -mcpu=mips64r2 -mattr=+n64 -enable-mips-tail-calls \
; RUN: < %s | FileCheck %s -check-prefix=N64
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; RUN: llc -march=mipsel -mcpu=mips16 -relocation-model=pic \
; RUN: -enable-mips-tail-calls < %s | FileCheck %s -check-prefix=PIC16
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
@g0 = common global i32 0, align 4
@g1 = common global i32 0, align 4
@g2 = common global i32 0, align 4
@g3 = common global i32 0, align 4
@g4 = common global i32 0, align 4
@g5 = common global i32 0, align 4
@g6 = common global i32 0, align 4
@g7 = common global i32 0, align 4
@g8 = common global i32 0, align 4
@g9 = common global i32 0, align 4
define i32 @caller1(i32 %a0) nounwind {
entry:
; PIC32-NOT: jalr
; STATIC32-NOT: jal
; N64-NOT: jalr
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: jalrc
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
%call = tail call i32 @callee1(i32 1, i32 1, i32 1, i32 %a0) nounwind
ret i32 %call
}
declare i32 @callee1(i32, i32, i32, i32)
define i32 @caller2(i32 %a0, i32 %a1, i32 %a2, i32 %a3) nounwind {
entry:
; PIC32: jalr
; STATIC32: jal
; N64-NOT: jalr
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: jalrc
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
%call = tail call i32 @callee2(i32 1, i32 %a0, i32 %a1, i32 %a2, i32 %a3) nounwind
ret i32 %call
}
declare i32 @callee2(i32, i32, i32, i32, i32)
define i32 @caller3(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4) nounwind {
entry:
; PIC32: jalr
; STATIC32: jal
; N64-NOT: jalr
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: jalrc
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
%call = tail call i32 @callee3(i32 1, i32 1, i32 1, i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4) nounwind
ret i32 %call
}
declare i32 @callee3(i32, i32, i32, i32, i32, i32, i32, i32)
define i32 @caller4(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7) nounwind {
entry:
; PIC32: jalr
; STATIC32: jal
; N64: jalr
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: jalrc
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
%call = tail call i32 @callee4(i32 1, i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7) nounwind
ret i32 %call
}
declare i32 @callee4(i32, i32, i32, i32, i32, i32, i32, i32, i32)
define i32 @caller5() nounwind readonly {
entry:
[mips] Do not tail-call optimize vararg functions or functions with byval arguments. This is rather conservative and should be fixed later to be more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-27 00:56:56 +00:00
; PIC32: .ent caller5
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
; PIC32-NOT: jalr
[mips] Do not tail-call optimize vararg functions or functions with byval arguments. This is rather conservative and should be fixed later to be more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-27 00:56:56 +00:00
; PIC32: .end caller5
; STATIC32: .ent caller5
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
; STATIC32-NOT: jal
[mips] Do not tail-call optimize vararg functions or functions with byval arguments. This is rather conservative and should be fixed later to be more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-27 00:56:56 +00:00
; STATIC32: .end caller5
; N64: .ent caller5
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
; N64-NOT: jalr
[mips] Do not tail-call optimize vararg functions or functions with byval arguments. This is rather conservative and should be fixed later to be more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-27 00:56:56 +00:00
; N64: .end caller5
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: .ent caller5
; PIC16: jalrc
; PIC16: .end caller5
[mips] Add code to do tail call optimization. Currently, it is enabled only if option "enable-mips-tail-calls" is given and all of the callee's arguments are passed in registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166342 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 21:47:33 +00:00
%0 = load i32* @g0, align 4
%1 = load i32* @g1, align 4
%2 = load i32* @g2, align 4
%3 = load i32* @g3, align 4
%4 = load i32* @g4, align 4
%5 = load i32* @g5, align 4
%6 = load i32* @g6, align 4
%7 = load i32* @g7, align 4
%8 = load i32* @g8, align 4
%9 = load i32* @g9, align 4
%call = tail call fastcc i32 @callee5(i32 %0, i32 %1, i32 %2, i32 %3, i32 %4, i32 %5, i32 %6, i32 %7, i32 %8, i32 %9)
ret i32 %call
}
define internal fastcc i32 @callee5(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7, i32 %a8, i32 %a9) nounwind readnone noinline {
entry:
%add = add nsw i32 %a1, %a0
%add1 = add nsw i32 %add, %a2
%add2 = add nsw i32 %add1, %a3
%add3 = add nsw i32 %add2, %a4
%add4 = add nsw i32 %add3, %a5
%add5 = add nsw i32 %add4, %a6
%add6 = add nsw i32 %add5, %a7
%add7 = add nsw i32 %add6, %a8
%add8 = add nsw i32 %add7, %a9
ret i32 %add8
}
[mips] Do not tail-call optimize vararg functions or functions with byval arguments. This is rather conservative and should be fixed later to be more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-27 00:56:56 +00:00
declare i32 @callee8(i32, ...)
define i32 @caller8_0() nounwind {
entry:
%call = tail call fastcc i32 @caller8_1()
ret i32 %call
}
define internal fastcc i32 @caller8_1() nounwind noinline {
entry:
; PIC32: .ent caller8_1
; PIC32: jalr
; PIC32: .end caller8_1
; STATIC32: .ent caller8_1
; STATIC32: jal
; STATIC32: .end caller8_1
; N64: .ent caller8_1
[mips] Allow tail-call optimization for vararg functions and functions which use the caller's stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167048 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 20:16:31 +00:00
; N64-NOT: jalr
[mips] Do not tail-call optimize vararg functions or functions with byval arguments. This is rather conservative and should be fixed later to be more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-27 00:56:56 +00:00
; N64: .end caller8_1
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: .ent caller8_1
; PIC16: jalrc
; PIC16: .end caller8_1
[mips] Do not tail-call optimize vararg functions or functions with byval arguments. This is rather conservative and should be fixed later to be more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-27 00:56:56 +00:00
%call = tail call i32 (i32, ...)* @callee8(i32 2, i32 1) nounwind
ret i32 %call
}
%struct.S = type { [2 x i32] }
@gs1 = external global %struct.S
declare i32 @callee9(%struct.S* byval)
define i32 @caller9_0() nounwind {
entry:
%call = tail call fastcc i32 @caller9_1()
ret i32 %call
}
define internal fastcc i32 @caller9_1() nounwind noinline {
entry:
; PIC32: .ent caller9_1
; PIC32: jalr
; PIC32: .end caller9_1
; STATIC32: .ent caller9_1
; STATIC32: jal
; STATIC32: .end caller9_1
; N64: .ent caller9_1
; N64: jalr
; N64: .end caller9_1
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: .ent caller9_1
; PIC16: jalrc
; PIC16: .end caller9_1
[mips] Do not tail-call optimize vararg functions or functions with byval arguments. This is rather conservative and should be fixed later to be more aggressive. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-27 00:56:56 +00:00
%call = tail call i32 @callee9(%struct.S* byval @gs1) nounwind
ret i32 %call
}
[mips] Allow tail-call optimization for vararg functions and functions which use the caller's stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167048 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 20:16:31 +00:00
declare i32 @callee10(i32, i32, i32, i32, i32, i32, i32, i32, i32)
define i32 @caller10(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7, i32 %a8) nounwind {
entry:
; PIC32: .ent caller10
; PIC32-NOT: jalr
; STATIC32: .ent caller10
; STATIC32-NOT: jal
; N64: .ent caller10
; N64-NOT: jalr
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: .ent caller10
; PIC16: jalrc
[mips] Allow tail-call optimization for vararg functions and functions which use the caller's stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167048 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 20:16:31 +00:00
%call = tail call i32 @callee10(i32 %a8, i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7) nounwind
ret i32 %call
}
declare i32 @callee11(%struct.S* byval)
define i32 @caller11() nounwind noinline {
entry:
; PIC32: .ent caller11
; PIC32: jalr
; STATIC32: .ent caller11
; STATIC32: jal
; N64: .ent caller11
; N64: jalr
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: .ent caller11
; PIC16: jalrc
[mips] Allow tail-call optimization for vararg functions and functions which use the caller's stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167048 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 20:16:31 +00:00
%call = tail call i32 @callee11(%struct.S* byval @gs1) nounwind
ret i32 %call
}
declare i32 @callee12()
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
define i32 @caller12(%struct.S* nocapture byval %a0) nounwind {
entry:
; PIC32: .ent caller12
; PIC32: jalr
; STATIC32: .ent caller12
; STATIC32: jal
; N64: .ent caller12
; N64: jalr
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: .ent caller12
; PIC16: jalrc
[mips] Allow tail-call optimization for vararg functions and functions which use the caller's stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167048 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 20:16:31 +00:00
%0 = bitcast %struct.S* %a0 to i8*
tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast (%struct.S* @gs1 to i8*), i8* %0, i32 8, i32 4, i1 false)
%call = tail call i32 @callee12() nounwind
ret i32 %call
}
declare i32 @callee13(i32, ...)
define i32 @caller13() nounwind {
entry:
; PIC32: .ent caller13
; PIC32-NOT: jalr
; STATIC32: .ent caller13
; STATIC32-NOT: jal
; N64: .ent caller13
; N64-NOT: jalr
Test case for r167039. Check that tail-call optimization is disabled for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167139 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-31 17:25:23 +00:00
; PIC16: .ent caller13
; PIC16: jalrc
[mips] Allow tail-call optimization for vararg functions and functions which use the caller's stack. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167048 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 20:16:31 +00:00
%call = tail call i32 (i32, ...)* @callee13(i32 1, i32 2) nounwind
ret i32 %call
}
[mips] Make sure there is a chain edge dependency between loads that read formal arguments on the stack and stores created afterwards. We need this to ensure tail call optimized function calls do not write over the argument area of the stack before it is read out. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194309 91177308-0d34-0410-b5e6-96231b3b80d8
2013-11-09 02:38:51 +00:00
; Check that there is a chain edge between the load and store nodes.
;
; PIC32-LABEL: caller14:
; PIC32: lw ${{[0-9]+}}, 16($sp)
; PIC32: sw $4, 16($sp)
define void @caller14(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) {
entry:
tail call void @callee14(i32 %e, i32 %b, i32 %c, i32 %d, i32 %a)
ret void
}
declare void @callee14(i32, i32, i32, i32, i32)
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