[llvm] [InstCombine] Canonicalize gep scaling factor (PR #180216)

[Nikita Popov via llvm-commits]

================
@@ -37,7 +37,10 @@ define void @test_fill_with_foreach([2 x i64] %elems.coerce) {
 ; CHECK-NEXT:    tail call void @error()
 ; CHECK-NEXT:    br label %[[COMMON_RET]]
 ; CHECK:       [[FOR_BODY]]:
-; CHECK-NEXT:    [[__BEGIN1_SROA_0_03:%.*]] = phi ptr [ [[INCDEC_PTR_I:%.*]], %[[FOR_BODY]] ], [ [[TMP0]], %[[FOR_COND_PREHEADER_SPLIT]] ]
+; CHECK-NEXT:    [[__BEGIN1_SROA_0_03:%.*]] = phi ptr [ [[INCDEC_PTR_I:%.*]], %[[FOR_LATCH:.*]] ], [ [[TMP0]], %[[FOR_COND_PREHEADER_SPLIT]] ]
+; CHECK-NEXT:    [[CMP2_I_I:%.*]] = icmp ult ptr [[__BEGIN1_SROA_0_03]], [[ADD_PTR_I]]
----------------
nikic wrote:

Regression in bounds check elimination.

https://github.com/llvm/llvm-project/pull/180216