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49 lines
1.7 KiB
LLVM
49 lines
1.7 KiB
LLVM
; RUN: llc %s -mtriple=aarch64 -o - | FileCheck %s
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%struct.A = type { i8, i8, i8, i8, i8, i8, i8, i8, i32 }
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; The existence of the final i32 value should not prevent the i8s from
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; being merged.
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; CHECK-LABEL: @merge_const_store
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; CHECK-NOT: strb
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; CHECK: str x8, [x1]
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; CHECK-NOT: strb
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; CHECK: str wzr, [x1, #8]
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; CHECK-NOT: strb
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define void @merge_const_store(i32 %count, %struct.A* nocapture %p) {
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%1 = icmp sgt i32 %count, 0
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br i1 %1, label %.lr.ph, label %._crit_edge
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.lr.ph:
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%i.02 = phi i32 [ %add, %.lr.ph ], [ 0, %0 ]
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%.01 = phi %struct.A* [ %addr, %.lr.ph ], [ %p, %0 ]
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%a2 = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 0
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store i8 1, i8* %a2, align 1
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%a3 = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 1
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store i8 2, i8* %a3, align 1
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%a4 = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 2
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store i8 3, i8* %a4, align 1
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%a5 = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 3
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store i8 4, i8* %a5, align 1
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%a6 = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 4
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store i8 5, i8* %a6, align 1
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%a7 = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 5
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store i8 6, i8* %a7, align 1
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%a8 = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 6
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store i8 7, i8* %a8, align 1
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%a9 = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 7
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store i8 8, i8* %a9, align 1
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;
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%addr_last = getelementptr inbounds %struct.A, %struct.A* %.01, i64 0, i32 8
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store i32 0, i32* %addr_last, align 4
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%add = add nsw i32 %i.02, 1
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%addr = getelementptr inbounds %struct.A, %struct.A* %.01, i64 1
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%exitcond = icmp eq i32 %add, %count
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br i1 %exitcond, label %._crit_edge, label %.lr.ph
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._crit_edge:
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ret void
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}
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