https://github.com/AtariDreams updated
https://github.com/llvm/llvm-project/pull/79174
>From 428bd6c4a69a6f4ba5b646086f7ad4d11f33fffa Mon Sep 17 00:00:00 2001
From: Rose <83477269+ataridre...@users.noreply.github.com>
Date: Tue, 23 Jan 2024 12:31:49 -0500
Subject: [PATCH] [CodeGen] Update test intrinsic to support immediates
---
clang/lib/CodeGen/CGBuiltin.cpp | 20 +++++++++++++++++---
1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index e051cbc6486353..e69235f350825b 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -1203,10 +1203,24 @@ static llvm::Value
*EmitX86BitTestIntrinsic(CodeGenFunction &CGF,
AsmOS << "bt";
if (Action)
AsmOS << Action;
- AsmOS << SizeSuffix << " $2, ($1)";
- // Build the constraints. FIXME: We should support immediates when possible.
- std::string Constraints = "={@ccc},r,r,~{cc},~{memory}";
+ // Check if BitPos is a ConstantInt (immediate value)
+ if (llvm::ConstantInt *CI = llvm::dyn_cast<llvm::ConstantInt>(BitPos)) {
+ // If it is, use the immediate value in the assembly string
+ AsmOS << SizeSuffix << " $" << CI->getZExtValue() << ", ($1)";
+ } else {
+ // Otherwise, fall back to the existing behavior
+ AsmOS << SizeSuffix << " $2, ($1)";
+ }
+
+ // Build the constraints.
+ std::string Constraints;
+ if (llvm::isa<llvm::ConstantInt>(BitPos)) {
+ Constraints = "={@ccc},r,~{cc},~{memory}";
+ } else {
+ Constraints = "={@ccc},r,r,~{cc},~{memory}";
+ }
+
std::string_view MachineClobbers = CGF.getTarget().getClobbers();
if (!MachineClobbers.empty()) {
Constraints += ',';
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