27 lines
848 B
LLVM
27 lines
848 B
LLVM
; RUN: opt < %s -sroa -S | FileCheck %s
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;
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; Make sure that SROA doesn't lose nonnull metadata
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; on loads from allocas that get optimized out.
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; CHECK-LABEL: define float* @yummy_nonnull
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; CHECK: [[RETURN:%(.*)]] = load float*, float** %arg, align 8
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; CHECK: [[ASSUME:%(.*)]] = icmp ne float* {{.*}}[[RETURN]], null
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; CHECK: call void @llvm.assume(i1 {{.*}}[[ASSUME]])
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; CHECK: ret float* {{.*}}[[RETURN]]
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define float* @yummy_nonnull(float** %arg) {
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entry-block:
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%buf = alloca float*
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%_arg_i8 = bitcast float** %arg to i8*
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%_buf_i8 = bitcast float** %buf to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %_buf_i8, i8* %_arg_i8, i64 8, i32 8, i1 false)
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%ret = load float*, float** %buf, align 8, !nonnull !0
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ret float* %ret
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)
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!0 = !{}
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