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Support the 'J' constraint.
Patch by Jack Carter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156280 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -3040,6 +3040,7 @@ MipsTargetLowering::getSingleConstraintMatchWeight(
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weight = CW_Register;
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weight = CW_Register;
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break;
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break;
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case 'I': // signed 16 bit immediate
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case 'I': // signed 16 bit immediate
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case 'J': // integer zero
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if (isa<ConstantInt>(CallOperandVal))
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if (isa<ConstantInt>(CallOperandVal))
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weight = CW_Constant;
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weight = CW_Constant;
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break;
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break;
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@ -3102,6 +3103,16 @@ void MipsTargetLowering::LowerAsmOperandForConstraint(SDValue Op,
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}
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}
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}
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}
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return;
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return;
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case 'J': // integer zero
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if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
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EVT Type = Op.getValueType();
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int64_t Val = C->getZExtValue();
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if (Val == 0) {
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Result = DAG.getTargetConstant(0, Type);
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break;
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}
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}
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return;
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}
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}
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if (Result.getNode()) {
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if (Result.getNode()) {
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16
test/CodeGen/Mips/inlineasm-cnstrnt-bad-J.ll
Normal file
16
test/CodeGen/Mips/inlineasm-cnstrnt-bad-J.ll
Normal file
@ -0,0 +1,16 @@
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;
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;This is a negative test. The constant value given for the constraint (J)
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;is non-zero (3).
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;
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; RUN: not llc -march=mipsel < %s 2> %t
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; RUN: FileCheck --check-prefix=CHECK-ERRORS < %t %s
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define i32 @main() nounwind {
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entry:
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;CHECK-ERRORS: error: invalid operand for inline asm constraint 'J'
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tail call i32 asm "addi $0,$1,$2", "=r,r,J"(i32 1024, i32 3) nounwind
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ret i32 0
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}
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@ -15,6 +15,12 @@ entry:
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; CHECK: #NO_APP
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; CHECK: #NO_APP
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tail call i32 asm sideeffect "addi $0,$1,$2", "=r,r,I"(i32 7, i32 -3) nounwind
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tail call i32 asm sideeffect "addi $0,$1,$2", "=r,r,I"(i32 7, i32 -3) nounwind
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; Now J with 0
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; CHECK: #APP
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; CHECK: addi ${{[0-9]+}},${{[0-9]+}},0
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; CHECK: #NO_APP
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tail call i32 asm sideeffect "addi $0,$1,$2\0A\09 ", "=r,r,J"(i32 7, i16 0) nounwind
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ret i32 0
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ret i32 0
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}
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}
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