From 9da5d50cbdd1299c7f3cc07b10656d1831a31a00 Mon Sep 17 00:00:00 2001 From: LLVM Packaging Team Date: Tue, 14 Jan 2025 14:16:47 +0100 Subject: [PATCH] mips-force-nomadd4 The MIPS port aims to support the Loongson 3 family of CPUs in addition of the other MIPS CPUs. On the Loongson 3 family the MADD4 instructions are fused, while they are not fused on the other MIPS CPUs. In order to support both, we have to disabled those instructions. For that, the patch below basically corresponds to the --with-madd4=no used on the GCC side. Gbp-Pq: Topic mips Gbp-Pq: Name mips-force-nomadd4.patch --- clang/lib/Basic/Targets/Mips.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/clang/lib/Basic/Targets/Mips.h b/clang/lib/Basic/Targets/Mips.h index b6f110249f..a2be5851d8 100644 --- a/clang/lib/Basic/Targets/Mips.h +++ b/clang/lib/Basic/Targets/Mips.h @@ -349,7 +349,9 @@ public: HasMSA = true; else if (Feature == "+nomadd4") DisableMadd4 = true; - else if (Feature == "+fp64") { + else if (Feature == "-nomadd4") + DisableMadd4 = false; + else if (Feature == "+fp64") { FPMode = FP64; FpGiven = true; } else if (Feature == "-fp64") { -- 2.30.2