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[DAGCombiner] Fix crash when trying to replace an indexed store with …
…a narrow store. rdar://108818859 Differential Revision: https://reviews.llvm.org/D152978
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31 changes: 31 additions & 0 deletions
31
llvm/test/CodeGen/AArch64/replace-load-with-shrink-store-indexed-crash.ll
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2 | ||
; RUN: llc < %s -mtriple=aarch64-- | FileCheck %s | ||
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" | ||
target triple = "arm64-apple-macosx13.0.0" | ||
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||
define void @_Z1hP1f(ptr %j) { | ||
; CHECK-LABEL: _Z1hP1f: | ||
; CHECK: // %bb.0: // %entry | ||
; CHECK-NEXT: mov x8, x0 | ||
; CHECK-NEXT: .LBB0_1: // %for.body | ||
; CHECK-NEXT: // =>This Inner Loop Header: Depth=1 | ||
; CHECK-NEXT: ldr w9, [x8] | ||
; CHECK-NEXT: mov w10, w9 | ||
; CHECK-NEXT: bfi w10, w9, #16, #16 | ||
; CHECK-NEXT: str w10, [x8], #4 | ||
; CHECK-NEXT: str w9, [x0] | ||
; CHECK-NEXT: b .LBB0_1 | ||
entry: | ||
br label %for.body | ||
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||
for.body: ; preds = %for.body, %entry | ||
%indvars.iv1 = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] | ||
%arrayidx3 = getelementptr i32, ptr %j, i64 %indvars.iv1 | ||
%0 = load i32, ptr %arrayidx3, align 4 | ||
%and = and i32 %0, 65535 | ||
%or = mul i32 %and, 65537 | ||
store i32 %or, ptr %arrayidx3, align 4 | ||
store i32 %0, ptr %j, align 4 | ||
%indvars.iv.next = add i64 %indvars.iv1, 1 | ||
br label %for.body | ||
} |