; RUN: llc -march=mips -relocation-model=static < %s | FileCheck -allow-deprecated-dag-overlap --check-prefixes=ALL,SYM32,O32,O32BE %s ; RUN: llc -march=mipsel -relocation-model=static < %s | FileCheck -allow-deprecated-dag-overlap --check-prefixes=ALL,SYM32,O32,O32LE %s ; RUN-TODO: llc -march=mips64 -relocation-model=static -target-abi o32 < %s | FileCheck --check-prefixes=ALL,SYM32,O32 %s ; RUN-TODO: llc -march=mips64el -relocation-model=static -target-abi o32 < %s | FileCheck --check-prefixes=ALL,SYM32,O32 %s ; RUN: llc -march=mips64 -relocation-model=static -target-abi n32 < %s | FileCheck -allow-deprecated-dag-overlap --check-prefixes=ALL,SYM32,N32,NEW,NEWBE %s ; RUN: llc -march=mips64el -relocation-model=static -target-abi n32 < %s | FileCheck -allow-deprecated-dag-overlap --check-prefixes=ALL,SYM32,N32,NEW,NEWLE %s ; RUN: llc -march=mips64 -relocation-model=static -target-abi n64 < %s | FileCheck -allow-deprecated-dag-overlap --check-prefixes=ALL,SYM64,N64,NEW,NEWBE %s ; RUN: llc -march=mips64el -relocation-model=static -target-abi n64 < %s | FileCheck -allow-deprecated-dag-overlap --check-prefixes=ALL,SYM64,N64,NEW,NEWLE %s ; Test the effect of varargs on floating point types in the non-variable part ; of the argument list as specified by section 2 of the MIPSpro N32 Handbook. ; ; N32/N64 are almost identical in this area so many of their checks have been ; combined into the 'NEW' prefix (the N stands for New). ; ; On O32, varargs prevents all FPU argument register usage. This contradicts ; the N32 handbook, but agrees with the SYSV ABI and GCC's behaviour. @floats = global [11 x float] zeroinitializer @doubles = global [11 x double] zeroinitializer define void @double_args(double %a, ...) nounwind { entry: %0 = getelementptr [11 x double], [11 x double]* @doubles, i32 0, i32 1 store volatile double %a, double* %0 %ap = alloca i8* %ap2 = bitcast i8** %ap to i8* call void @llvm.va_start(i8* %ap2) %b = va_arg i8** %ap, double %1 = getelementptr [11 x double], [11 x double]* @doubles, i32 0, i32 2 store volatile double %b, double* %1 call void @llvm.va_end(i8* %ap2) ret void } ; ALL-LABEL: double_args: ; We won't test the way the global address is calculated in this test. This is ; just to get the register number for the other checks. ; SYM32-DAG: addiu [[R2:\$[0-9]+]], ${{[0-9]+}}, %lo(doubles) ; SYM64-DAG: daddiu [[R2:\$[0-9]+]], ${{[0-9]+}}, %lo(doubles) ; O32 forbids using floating point registers for the non-variable portion. ; N32/N64 allow it. ; O32BE-DAG: mtc1 $5, [[FTMP1:\$f[0-9]*[02468]+]] ; O32BE-DAG: mtc1 $4, [[FTMP2:\$f[0-9]*[13579]+]] ; O32LE-DAG: mtc1 $4, [[FTMP1:\$f[0-9]*[02468]+]] ; O32LE-DAG: mtc1 $5, [[FTMP2:\$f[0-9]*[13579]+]] ; O32-DAG: sdc1 [[FTMP1]], 8([[R2]]) ; NEW-DAG: sdc1 $f12, 8([[R2]]) ; The varargs portion is dumped to stack ; O32-DAG: sw $6, 16($sp) ; O32-DAG: sw $7, 20($sp) ; NEW-DAG: sd $5, 8($sp) ; NEW-DAG: sd $6, 16($sp) ; NEW-DAG: sd $7, 24($sp) ; NEW-DAG: sd $8, 32($sp) ; NEW-DAG: sd $9, 40($sp) ; NEW-DAG: sd $10, 48($sp) ; NEW-DAG: sd $11, 56($sp) ; Get the varargs pointer ; O32 has 4 bytes padding, 4 bytes for the varargs pointer, and 8 bytes reserved ; for arguments 1 and 2. ; N32/N64 has 8 bytes for the varargs pointer, and no reserved area. ; O32-DAG: addiu [[VAPTR:\$[0-9]+]], $sp, 16 ; O32-DAG: sw [[VAPTR]], 4($sp) ; N32-DAG: addiu [[VAPTR:\$[0-9]+]], $sp, 8 ; N32-DAG: sw [[VAPTR]], 4($sp) ; N64-DAG: daddiu [[VAPTR:\$[0-9]+]], $sp, 8 ; N64-DAG: sd [[VAPTR]], 0($sp) ; Increment the pointer then get the varargs arg ; LLVM will rebind the load to the stack pointer instead of the varargs pointer ; during lowering. This is fine and doesn't change the behaviour. ; O32-DAG: addiu [[VAPTR]], [[VAPTR]], 8 ; O32-DAG: sw [[VAPTR]], 4($sp) ; N32-DAG: addiu [[VAPTR]], [[VAPTR]], 8 ; N32-DAG: sw [[VAPTR]], 4($sp) ; N64-DAG: daddiu [[VAPTR]], [[VAPTR]], 8 ; N64-DAG: sd [[VAPTR]], 0($sp) ; O32-DAG: ldc1 [[FTMP1:\$f[0-9]+]], 16($sp) ; NEW-DAG: ldc1 [[FTMP1:\$f[0-9]+]], 8($sp) ; ALL-DAG: sdc1 [[FTMP1]], 16([[R2]]) define void @float_args(float %a, ...) nounwind { entry: %0 = getelementptr [11 x float], [11 x float]* @floats, i32 0, i32 1 store volatile float %a, float* %0 %ap = alloca i8* %ap2 = bitcast i8** %ap to i8* call void @llvm.va_start(i8* %ap2) %b = va_arg i8** %ap, float %1 = getelementptr [11 x float], [11 x float]* @floats, i32 0, i32 2 store volatile float %b, float* %1 call void @llvm.va_end(i8* %ap2) ret void } ; ALL-LABEL: float_args: ; We won't test the way the global address is calculated in this test. This is ; just to get the register number for the other checks. ; SYM32-DAG: addiu [[R2:\$[0-9]+]], ${{[0-9]+}}, %lo(floats) ; SYM64-DAG: daddiu [[R2:\$[0-9]+]], ${{[0-9]+}}, %lo(floats) ; The first four arguments are the same in O32/N32/N64. ; The non-variable portion should be unaffected. ; O32-DAG: sw $4, 4([[R2]]) ; NEW-DAG: swc1 $f12, 4([[R2]]) ; The varargs portion is dumped to stack ; O32-DAG: sw $5, 12($sp) ; O32-DAG: sw $6, 16($sp) ; O32-DAG: sw $7, 20($sp) ; NEW-DAG: sd $5, 8($sp) ; NEW-DAG: sd $6, 16($sp) ; NEW-DAG: sd $7, 24($sp) ; NEW-DAG: sd $8, 32($sp) ; NEW-DAG: sd $9, 40($sp) ; NEW-DAG: sd $10, 48($sp) ; NEW-DAG: sd $11, 56($sp) ; Get the varargs pointer ; O32 has 4 bytes padding, 4 bytes for the varargs pointer, and should have 8 ; bytes reserved for arguments 1 and 2 (the first float arg) but as discussed in ; arguments-float.ll, GCC doesn't agree with MD00305 and treats floats as 4 ; bytes so we only have 12 bytes total. ; N32/N64 has 8 bytes for the varargs pointer, and no reserved area. ; O32-DAG: addiu [[VAPTR:\$[0-9]+]], $sp, 12 ; O32-DAG: sw [[VAPTR]], 4($sp) ; N32-DAG: addiu [[VAPTR:\$[0-9]+]], $sp, 8 ; N32-DAG: sw [[VAPTR]], 4($sp) ; N64-DAG: daddiu [[VAPTR:\$[0-9]+]], $sp, 8 ; N64-DAG: sd [[VAPTR]], 0($sp) ; Increment the pointer then get the varargs arg ; LLVM will rebind the load to the stack pointer instead of the varargs pointer ; during lowering. This is fine and doesn't change the behaviour. ; Also, in big-endian mode the offset must be increased by 4 to retrieve the ; correct half of the argument slot. ; ; O32-DAG: addiu [[VAPTR]], [[VAPTR]], 4 ; O32-DAG: sw [[VAPTR]], 4($sp) ; N32-DAG: addiu [[VAPTR]], [[VAPTR]], 8 ; N32-DAG: sw [[VAPTR]], 4($sp) ; N64-DAG: daddiu [[VAPTR]], [[VAPTR]], 8 ; N64-DAG: sd [[VAPTR]], 0($sp) ; O32-DAG: lwc1 [[FTMP1:\$f[0-9]+]], 12($sp) ; NEWLE-DAG: lwc1 [[FTMP1:\$f[0-9]+]], 8($sp) ; NEWBE-DAG: lwc1 [[FTMP1:\$f[0-9]+]], 12($sp) ; ALL-DAG: swc1 [[FTMP1]], 8([[R2]]) declare void @llvm.va_start(i8*) declare void @llvm.va_copy(i8*, i8*) declare void @llvm.va_end(i8*)