[llvm] 0bb9c05 - [LV] Extend FIXME in test add in 91ee1e379901af3.

[Florian Hahn via llvm-commits]

Author: Florian Hahn
Date: 2021-07-05T15:56:03+01:00
New Revision: 0bb9c05b1ec654eeba195c0e1a4030f795a2f09d

URL: https://github.com/llvm/llvm-project/commit/0bb9c05b1ec654eeba195c0e1a4030f795a2f09d
DIFF: https://github.com/llvm/llvm-project/commit/0bb9c05b1ec654eeba195c0e1a4030f795a2f09d.diff

LOG: [LV] Extend FIXME in test add in 91ee1e379901af3.

Added: 
    

Modified: 
    llvm/test/Transforms/LoopVectorize/runtime-check-small-clamped-bounds.ll

Removed: 
    


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diff  --git a/llvm/test/Transforms/LoopVectorize/runtime-check-small-clamped-bounds.ll b/llvm/test/Transforms/LoopVectorize/runtime-check-small-clamped-bounds.ll
index 8875f174b081..0b4d1f5a468c 100644
--- a/llvm/test/Transforms/LoopVectorize/runtime-check-small-clamped-bounds.ll
+++ b/llvm/test/Transforms/LoopVectorize/runtime-check-small-clamped-bounds.ll
@@ -1,10 +1,13 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -loop-vectorize -force-vector-width=2 -S %s | FileCheck %s
 
-; Tests where the indices of some accesses are clamped to a small value.
-; FIXME: At the moment, the runtime checks require that the indices do not wrap.
-;        The clamped indices do wrap, so the vector loops are dead at the
-;        moment.
+; Tests where the indices of some accesses are clamped to a small range.
+
+; FIXME: At the moment, the runtime checks require that the indices do not wrap
+;        and runtime checks are emitted to ensure that. The clamped indices do
+;        wrap, so the vector loops are dead at the moment. But it is still
+;        possible to compute the bounds of the accesses and generate proper
+;        runtime checks.
 
 ; The relevant bounds for %gep.A are [%A, %A+4).
 define void @load_clamped_index(i32* %A, i32* %B, i32 %N) {