19 lines
860 B
LLVM
19 lines
860 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -passes=instcombine,memcpyopt -S | FileCheck %s
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; FIXME: These two memset calls should be merged into a single one.
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define void @merge_memset(ptr %p, i1 %cond) {
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; CHECK-LABEL: define void @merge_memset(
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; CHECK-SAME: ptr [[P:%.*]], i1 [[COND:%.*]]) {
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; CHECK-NEXT: [[OFF:%.*]] = getelementptr inbounds nuw i8, ptr [[P]], i64 4096
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; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 1 [[P]], i8 0, i64 4864, i1 false)
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; CHECK-NEXT: ret void
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;
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%sel = select i1 %cond, ptr null, ptr %p
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tail call void @llvm.memset.p0.i64(ptr noundef nonnull %sel, i8 0, i64 4096, i1 false)
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%off = getelementptr inbounds nuw i8, ptr %sel, i64 4096
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tail call void @llvm.memset.p0.i64(ptr noundef nonnull %off, i8 0, i64 768, i1 false)
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ret void
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}
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