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Fixing PR990: http://llvm.org/PR990.

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This should unbreak csretcc on Linux & mingw targets. Several tests from
llvm-test should be also restored (fftbench, bigfib).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31613 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2006-11-10 00:48:11 +00:00
parent 578d2df84b
commit df78611726
2 changed files with 66 additions and 6 deletions
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12
lib/Target/X86/X86ISelLowering.cpp
View File

@ -516,10 +516,9 @@ SDOperand X86TargetLowering::LowerCCCArguments(SDOperand Op, SelectionDAG &DAG)
BytesToPopOnReturn = 0; // Callee pops nothing.
BytesCallerReserves = ArgOffset;
// If this is a struct return on Darwin/X86, the callee pops the hidden struct
// pointer.
if (MF.getFunction()->getCallingConv() == CallingConv::CSRet &&
Subtarget->isTargetDarwin())
// If this is a struct return on, the callee pops the hidden struct
// pointer. This is common for Darwin/X86, Linux & Mingw32 targets.
if (MF.getFunction()->getCallingConv() == CallingConv::CSRet)
BytesToPopOnReturn = 4;
// Return the new list of results.
@ -680,9 +679,10 @@ SDOperand X86TargetLowering::LowerCCCCallTo(SDOperand Op, SelectionDAG &DAG) {
// Create the CALLSEQ_END node.
unsigned NumBytesForCalleeToPush = 0;
// If this is is a call to a struct-return function on Darwin/X86, the callee
// If this is is a call to a struct-return function, the callee
// pops the hidden struct pointer, so we have to push it back.
if (CallingConv == CallingConv::CSRet && Subtarget->isTargetDarwin())
// This is common for Darwin/X86, Linux & Mingw32 targets.
if (CallingConv == CallingConv::CSRet)
NumBytesForCalleeToPush = 4;
NodeTys.clear();

60
test/CodeGen/X86/2006-11-12-CSRetCC.ll Normal file
View File

@ -0,0 +1,60 @@
; RUN: llvm-as < %s | llc -march=x86 | grep 'subl $4, %esp'
%str = internal constant [9 x sbyte] c"%f+%f*i\0A\00" ; <[9 x sbyte]*> [#uses=1]
implementation ; Functions:
int %main() {
entry:
%retval = alloca int, align 4 ; <int*> [#uses=1]
%tmp = alloca { double, double }, align 16 ; <{ double, double }*> [#uses=4]
%tmp1 = alloca { double, double }, align 16 ; <{ double, double }*> [#uses=4]
%tmp2 = alloca { double, double }, align 16 ; <{ double, double }*> [#uses=3]
%pi = alloca double, align 8 ; <double*> [#uses=2]
%z = alloca { double, double }, align 16 ; <{ double, double }*> [#uses=4]
"alloca point" = cast int 0 to int ; <int> [#uses=0]
store double 0x400921FB54442D18, double* %pi
%tmp = load double* %pi ; <double> [#uses=1]
%real = getelementptr { double, double }* %tmp1, uint 0, uint 0 ; <double*> [#uses=1]
store double 0.000000e+00, double* %real
%real3 = getelementptr { double, double }* %tmp1, uint 0, uint 1 ; <double*> [#uses=1]
store double %tmp, double* %real3
%tmp = getelementptr { double, double }* %tmp, uint 0, uint 0 ; <double*> [#uses=1]
%tmp4 = getelementptr { double, double }* %tmp1, uint 0, uint 0 ; <double*> [#uses=1]
%tmp5 = load double* %tmp4 ; <double> [#uses=1]
store double %tmp5, double* %tmp
%tmp6 = getelementptr { double, double }* %tmp, uint 0, uint 1 ; <double*> [#uses=1]
%tmp7 = getelementptr { double, double }* %tmp1, uint 0, uint 1 ; <double*> [#uses=1]
%tmp8 = load double* %tmp7 ; <double> [#uses=1]
store double %tmp8, double* %tmp6
%tmp = cast { double, double }* %tmp to { long, long }* ; <{ long, long }*> [#uses=1]
%tmp = getelementptr { long, long }* %tmp, uint 0, uint 0 ; <long*> [#uses=1]
%tmp = load long* %tmp ; <long> [#uses=1]
%tmp9 = cast { double, double }* %tmp to { long, long }* ; <{ long, long }*> [#uses=1]
%tmp10 = getelementptr { long, long }* %tmp9, uint 0, uint 1 ; <long*> [#uses=1]
%tmp11 = load long* %tmp10 ; <long> [#uses=1]
call csretcc void %cexp( { double, double }* %tmp2, long %tmp, long %tmp11 )
%tmp12 = getelementptr { double, double }* %z, uint 0, uint 0 ; <double*> [#uses=1]
%tmp13 = getelementptr { double, double }* %tmp2, uint 0, uint 0 ; <double*> [#uses=1]
%tmp14 = load double* %tmp13 ; <double> [#uses=1]
store double %tmp14, double* %tmp12
%tmp15 = getelementptr { double, double }* %z, uint 0, uint 1 ; <double*> [#uses=1]
%tmp16 = getelementptr { double, double }* %tmp2, uint 0, uint 1 ; <double*> [#uses=1]
%tmp17 = load double* %tmp16 ; <double> [#uses=1]
store double %tmp17, double* %tmp15
%tmp18 = getelementptr { double, double }* %z, uint 0, uint 1 ; <double*> [#uses=1]
%tmp19 = load double* %tmp18 ; <double> [#uses=1]
%tmp20 = getelementptr { double, double }* %z, uint 0, uint 0 ; <double*> [#uses=1]
%tmp21 = load double* %tmp20 ; <double> [#uses=1]
%tmp = getelementptr [9 x sbyte]* %str, int 0, uint 0 ; <sbyte*> [#uses=1]
%tmp = call int (sbyte*, ...)* %printf( sbyte* %tmp, double %tmp21, double %tmp19 ) ; <int> [#uses=0]
br label %return
return: ; preds = %entry
%retval = load int* %retval ; <int> [#uses=1]
ret int %retval
}
declare csretcc void %cexp({ double, double }*, long, long)
declare int %printf(sbyte*, ...)