pengfei updated this revision to Diff 484521.
pengfei marked an inline comment as done.
pengfei added a comment.
Use FastMathFlagGuard instead, thanks @foad!
In D140467#4010296 <https://reviews.llvm.org/D140467#4010296>, @arsenm wrote:
> Needs tests. I couldn’t find any for the base builtins either
I don't think so. We have tested their intrinsic wrappers, e.g.,
https://github.com/llvm/llvm-project/blob/main/clang/test/CodeGen/X86/avx512fp16-builtins.c#L4451
We don't need to test those target specific builtins. They are neither
guaranteed to be cross compiler compatible nor release by release.
Besides, we have thousands of intrinsics in X86. Adding their builtin tests
have no any benefits and increase the time in lit tests.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D140467/new/
https://reviews.llvm.org/D140467
Files:
clang/lib/CodeGen/CGBuiltin.cpp
Index: clang/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- clang/lib/CodeGen/CGBuiltin.cpp
+++ clang/lib/CodeGen/CGBuiltin.cpp
@@ -13113,6 +13113,8 @@
return Builder.CreateBitCast(Sext, FPVecTy);
};
+ IRBuilder<>::FastMathFlagGuard FMFGuard(Builder);
+
switch (BuiltinID) {
default: return nullptr;
case X86::BI_mm_prefetch: {
Index: clang/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- clang/lib/CodeGen/CGBuiltin.cpp
+++ clang/lib/CodeGen/CGBuiltin.cpp
@@ -13113,6 +13113,8 @@
return Builder.CreateBitCast(Sext, FPVecTy);
};
+ IRBuilder<>::FastMathFlagGuard FMFGuard(Builder);
+
switch (BuiltinID) {
default: return nullptr;
case X86::BI_mm_prefetch: {
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