29441e4f5f
This PR removes the old `nocapture` attribute, replacing it with the new `captures` attribute introduced in #116990. This change is intended to be essentially NFC, replacing existing uses of `nocapture` with `captures(none)` without adding any new analysis capabilities. Making use of non-`none` values is left for a followup. Some notes: * `nocapture` will be upgraded to `captures(none)` by the bitcode reader. * `nocapture` will also be upgraded by the textual IR reader. This is to make it easier to use old IR files and somewhat reduce the test churn in this PR. * Helper APIs like `doesNotCapture()` will check for `captures(none)`. * MLIR import will convert `captures(none)` into an `llvm.nocapture` attribute. The representation in the LLVM IR dialect should be updated separately.
51 lines
1.8 KiB
LLVM
51 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -passes=memcpyopt -S < %s -verify-memoryssa | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
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target triple = "x86_64-apple-macosx10.7.0"
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@x = global i32 0
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declare void @otherf(ptr)
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declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind
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; memcpyopt should not touch atomic ops
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define void @test1() nounwind uwtable ssp {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[X:%.*]] = alloca [101 x i32], align 16
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; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 16 [[X]], i8 0, i64 400, i1 false)
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; CHECK-NEXT: [[GEP1:%.*]] = getelementptr inbounds [101 x i32], ptr [[X]], i32 0, i32 100
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; CHECK-NEXT: store atomic i32 0, ptr [[GEP1]] unordered, align 4
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; CHECK-NEXT: call void @otherf(ptr [[X]])
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; CHECK-NEXT: ret void
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;
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%x = alloca [101 x i32], align 16
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call void @llvm.memset.p0.i64(ptr align 16 %x, i8 0, i64 400, i1 false)
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%gep1 = getelementptr inbounds [101 x i32], ptr %x, i32 0, i32 100
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store atomic i32 0, ptr %gep1 unordered, align 4
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call void @otherf(ptr %x)
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ret void
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}
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; memcpyopt across unordered store
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define void @test2() nounwind uwtable ssp {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[OLD:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[NEW:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @otherf(ptr captures(none) [[NEW]])
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; CHECK-NEXT: store atomic i32 0, ptr @x unordered, align 4
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; CHECK-NEXT: call void @otherf(ptr captures(none) [[NEW]])
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; CHECK-NEXT: ret void
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;
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%old = alloca i32
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%new = alloca i32
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call void @otherf(ptr nocapture %old)
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store atomic i32 0, ptr @x unordered, align 4
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%v = load i32, ptr %old
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store i32 %v, ptr %new
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call void @otherf(ptr nocapture %new)
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ret void
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}
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