[llvm] [NFC] Remove dead code (PR #106056)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: None (ldrumm)

<details>
<summary>Changes</summary>

There's an early exit branch a couple of lines earlier for `MVT == f64`. Convert to an assert rather than using the duplicate ternary here. This silences an opinionated static analyser that's been bugging me.

---
Full diff: https://github.com/llvm/llvm-project/pull/106056.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp (+2-2) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
index cb3fbdb850c1ac..4cf7733a260ff0 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
@@ -745,8 +745,8 @@ GCNTTIImpl::getIntrinsicInstrCost(const IntrinsicCostAttributes &ICA,
   case Intrinsic::copysign:
     return NElts * getFullRateInstrCost();
   case Intrinsic::canonicalize: {
-    InstRate =
-        SLT == MVT::f64 ? get64BitInstrCost(CostKind) : getFullRateInstrCost();
+    assert(SLT != MVT::f64);
+    InstRate = getFullRateInstrCost();
     break;
   }
   case Intrinsic::uadd_sat:

``````````

</details>


https://github.com/llvm/llvm-project/pull/106056