[clang] [llvm] [InstCombine] Relax singleUse for GEP(p,add(x,constant)) to 2 GEPs (PR #209551)

[Florian Hahn via llvm-commits]

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@@ -26,10 +26,11 @@ define void @partial_unroll_forced(i32 %N, ptr %src, ptr noalias %dst) {
 ; CHECK-NEXT:    [[DST_IDX:%.*]] = getelementptr [16 x i8], ptr [[DST]], i64 [[INDVARS_IV]]
 ; CHECK-NEXT:    [[ADD:%.*]] = fadd <8 x half> [[L]], [[L]]
 ; CHECK-NEXT:    store <8 x half> [[ADD]], ptr [[DST_IDX]], align 16
-; CHECK-NEXT:    [[INDVARS_IV_NEXT:%.*]] = or disjoint i64 [[INDVARS_IV]], 1
-; CHECK-NEXT:    [[SRC_IDX_1:%.*]] = getelementptr [16 x i8], ptr [[SRC]], i64 [[INDVARS_IV_NEXT]]
+; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr [16 x i8], ptr [[SRC]], i64 [[INDVARS_IV]]
+; CHECK-NEXT:    [[SRC_IDX_1:%.*]] = getelementptr i8, ptr [[TMP1]], i64 16
 ; CHECK-NEXT:    [[L_1:%.*]] = load <8 x half>, ptr [[SRC_IDX_1]], align 16
-; CHECK-NEXT:    [[DST_IDX_1:%.*]] = getelementptr [16 x i8], ptr [[DST]], i64 [[INDVARS_IV_NEXT]]
+; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr [16 x i8], ptr [[DST]], i64 [[INDVARS_IV]]
+; CHECK-NEXT:    [[DST_IDX_1:%.*]] = getelementptr i8, ptr [[TMP2]], i64 16
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fhahn wrote:

This is a regression?

https://github.com/llvm/llvm-project/pull/209551