[llvm] [AMDGPU] Precommit Tests for 'Fold redundant inf/nan checks into frexp instructions' (PR #214964)

[Shilei Tian via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 < %s | FileCheck -check-prefix=GFX9 %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1030 < %s | FileCheck -check-prefix=GFX10 %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx1100 < %s | FileCheck -check-prefix=GFX11 %s
+; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx950 < %s | FileCheck -check-prefix=GFX950 %s
+; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=tahiti < %s | FileCheck -check-prefix=SI %s
+
+; Test that redundant inf/nan checks are folded into frexp instructions.
+; The AMDGPU frexp instructions already return 0 for inf/nan inputs.
+; This optimization should NOT apply on SI (Southern Islands) which has hasFractBug.
+
+declare {float, i32} @llvm.frexp.f32.i32(float)
+declare {double, i32} @llvm.frexp.f64.i32(double)
+declare {half, i16} @llvm.frexp.f16.i16(half)
+declare {bfloat, i16} @llvm.frexp.bf16.i16(bfloat)
+declare {<2 x float>, <2 x i32>} @llvm.frexp.v2f32.v2i32(<2 x float>)
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shiltian wrote:

no need for declaration

https://github.com/llvm/llvm-project/pull/214964