67 lines
2.2 KiB
LLVM
67 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
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define void @merge_store(i32* nocapture %a) {
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; CHECK-LABEL: merge_store:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: movabsq $4294967297, %rcx # imm = 0x100000001
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; CHECK-NEXT: .p2align 4, 0x90
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; CHECK-NEXT: .LBB0_1: # %for.body
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: movq %rcx, (%rdi,%rax,4)
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; CHECK-NEXT: movq %rcx, 8(%rdi,%rax,4)
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; CHECK-NEXT: addq $4, %rax
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; CHECK-NEXT: cmpl $1000, %eax # imm = 0x3E8
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; CHECK-NEXT: jl .LBB0_1
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; CHECK-NEXT: # %bb.2: # %for.end
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; CHECK-NEXT: retq
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
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store i32 1, i32* %arrayidx, align 4
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%0 = or i64 %indvars.iv, 1
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%arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %0
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store i32 1, i32* %arrayidx2, align 4
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%1 = or i64 %indvars.iv, 2
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%arrayidx5 = getelementptr inbounds i32, i32* %a, i64 %1
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store i32 1, i32* %arrayidx5, align 4
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%2 = or i64 %indvars.iv, 3
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%arrayidx8 = getelementptr inbounds i32, i32* %a, i64 %2
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store i32 1, i32* %arrayidx8, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 4
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%3 = trunc i64 %indvars.iv.next to i32
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%cmp = icmp slt i32 %3, 1000
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br i1 %cmp, label %for.body, label %for.end
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for.end:
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ret void
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}
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define void @indexed_store_merge(i64 %p, i8* %v) {
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; CHECK-LABEL: indexed_store_merge:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: movl $0, 2(%rdi,%rsi)
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; CHECK-NEXT: movb $0, (%rsi)
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; CHECK-NEXT: retq
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entry:
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%p2 = add nsw i64 %p, 2
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%v2 = getelementptr i8, i8* %v, i64 %p2
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store i8 0, i8* %v2, align 2
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%p3 = add nsw i64 %p, 3
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%v3 = getelementptr i8, i8* %v, i64 %p3
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store i8 0, i8* %v3, align 1
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%p4 = add nsw i64 %p, 4
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%v4 = getelementptr i8, i8* %v, i64 %p4
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store i8 0, i8* %v4, align 2
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%p5 = add nsw i64 %p, 5
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%v5 = getelementptr i8, i8* %v, i64 %p5
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store i8 0, i8* %v5, align 1
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%v0 = getelementptr i8, i8* %v, i64 0
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store i8 0, i8* %v0, align 2
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ret void
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}
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