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Support very wide $display arguments (#7280)

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This commit is contained in:
Jakub Michalski
2026-03-26 13:55:14 -04:00
committed by GitHub
parent e5adb60461
commit 5d2d05236e
14 changed files with 125 additions and 198 deletions
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src/V3EmitCFunc.cpp
-9
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@@ -25,9 +25,6 @@
VL_DEFINE_DEBUG_FUNCTIONS;
// We use a static char array in VL_VALUE_STRING
constexpr int VL_VALUE_STRING_MAX_WIDTH = 8192;
//######################################################################
// EmitCFunc
@@ -186,7 +183,6 @@ bool EmitCFunc::displayEmitHeader(AstNode* nodep, bool isScan) {
puts(",");
} else if (const AstSScanF* const dispp = VN_CAST(nodep, SScanF)) {
isStmt = false;
checkMaxWords(dispp->fromp());
putns(nodep, "VL_SSCANF_I");
emitIQW(dispp->fromp());
puts("NX(");
@@ -321,11 +317,6 @@ void EmitCFunc::displayNode(AstNode* nodep, AstSFormatF* fmtp, // fmtp is nullp
AstSFormatArg* const fargp = VN_CAST(argp, SFormatArg);
AstNode* const subargp = fargp ? fargp->exprp() : argp;
const VFormatAttr formatAttr = AstSFormatArg::formatAttrDefauled(fargp, subargp->dtypep());
if (subargp->widthMin() > VL_VALUE_STRING_MAX_WIDTH) {
nodep->v3warn(E_UNSUPPORTED, "Unsupported: Exceeded limit of "
+ cvtToStr(VL_VALUE_STRING_MAX_WIDTH)
+ " bits for any $display-like arguments");
}
puts(", '"s + formatAttr.ascii() + '\'');
if (formatAttr.isSigned() || formatAttr.isUnsigned())
puts("," + cvtToStr(subargp->widthMin()));