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.
39 lines
1.8 KiB
LLVM
39 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
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; RUN: opt < %s -passes=argpromotion -S | FileCheck %s
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; Unused arguments from variadic functions cannot be eliminated as that changes
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; their classiciation according to the SysV amd64 ABI. Clang and other frontends
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; bake in the classification when they use things like byval, as in this test.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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%struct.tt0 = type { i64, i64 }
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%struct.__va_list_tag = type { i32, i32, ptr, ptr }
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@t45 = internal global %struct.tt0 { i64 1335139741, i64 438042995 }, align 8
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; Function Attrs: nounwind uwtable
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define i32 @main(i32 %argc, ptr nocapture readnone %argv) #0 {
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; CHECK-LABEL: define {{[^@]+}}@main
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; CHECK-SAME: (i32 [[ARGC:%.*]], ptr readnone captures(none) [[ARGV:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: tail call void (ptr, ptr, ptr, ptr, ptr, ...) @callee_t0f(ptr undef, ptr undef, ptr undef, ptr undef, ptr undef, ptr byval([[STRUCT_TT0:%.*]]) align 8 @t45)
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; CHECK-NEXT: ret i32 0
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;
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entry:
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tail call void (ptr, ptr, ptr, ptr, ptr, ...) @callee_t0f(ptr undef, ptr undef, ptr undef, ptr undef, ptr undef, ptr byval(%struct.tt0) align 8 @t45)
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ret i32 0
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}
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; Function Attrs: nounwind uwtable
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define internal void @callee_t0f(ptr nocapture readnone %tp13, ptr nocapture readnone %tp14, ptr nocapture readnone %tp15, ptr nocapture readnone %tp16, ptr nocapture readnone %tp17, ...) {
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; CHECK-LABEL: define {{[^@]+}}@callee_t0f
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; CHECK-SAME: (ptr readnone captures(none) [[TP13:%.*]], ptr readnone captures(none) [[TP14:%.*]], ptr readnone captures(none) [[TP15:%.*]], ptr readnone captures(none) [[TP16:%.*]], ptr readnone captures(none) [[TP17:%.*]], ...) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: ret void
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;
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entry:
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ret void
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}
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