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9f384ed588
This cleans up the stack allocated by a @llvm.call.preallocated.setup. Should either call the teardown or the preallocated call to clean up the stack. Calling both is UB. Add LangRef. Add verifier check that the token argument is a @llvm.call.preallocated.setup. Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D83354
79 lines
2.7 KiB
LLVM
79 lines
2.7 KiB
LLVM
; RUN: opt -S %s -verify
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declare token @llvm.call.preallocated.setup(i32)
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declare i8* @llvm.call.preallocated.arg(token, i32)
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declare void @llvm.call.preallocated.teardown(token)
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declare i32 @__CxxFrameHandler3(...)
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declare void @foo1(i32* preallocated(i32))
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declare i64 @foo1_i64(i32* preallocated(i32))
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declare void @foo2(i32* preallocated(i32), i32*, i32* preallocated(i32))
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declare void @constructor(i32*)
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define void @preallocated() {
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%cs = call token @llvm.call.preallocated.setup(i32 1)
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%x = call i8* @llvm.call.preallocated.arg(token %cs, i32 0) preallocated(i32)
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%y = bitcast i8* %x to i32*
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call void @foo1(i32* preallocated(i32) %y) ["preallocated"(token %cs)]
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ret void
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}
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define void @preallocated_indirect(void (i32*)* %f) {
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%cs = call token @llvm.call.preallocated.setup(i32 1)
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%x = call i8* @llvm.call.preallocated.arg(token %cs, i32 0) preallocated(i32)
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%y = bitcast i8* %x to i32*
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call void %f(i32* preallocated(i32) %y) ["preallocated"(token %cs)]
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ret void
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}
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define void @preallocated_setup_without_call() {
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%cs = call token @llvm.call.preallocated.setup(i32 1)
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%a0 = call i8* @llvm.call.preallocated.arg(token %cs, i32 0) preallocated(i32)
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ret void
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}
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define void @preallocated_num_args() {
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%cs = call token @llvm.call.preallocated.setup(i32 2)
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%x = call i8* @llvm.call.preallocated.arg(token %cs, i32 0) preallocated(i32)
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%x1 = bitcast i8* %x to i32*
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%y = call i8* @llvm.call.preallocated.arg(token %cs, i32 1) preallocated(i32)
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%y1 = bitcast i8* %y to i32*
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%a = inttoptr i32 0 to i32*
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call void @foo2(i32* preallocated(i32) %x1, i32* %a, i32* preallocated(i32) %y1) ["preallocated"(token %cs)]
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ret void
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}
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define void @preallocated_musttail(i32* preallocated(i32) %a) {
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musttail call void @foo1(i32* preallocated(i32) %a)
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ret void
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}
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define i64 @preallocated_musttail_i64(i32* preallocated(i32) %a) {
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%r = musttail call i64 @foo1_i64(i32* preallocated(i32) %a)
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ret i64 %r
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}
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define void @preallocated_teardown() {
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%cs = call token @llvm.call.preallocated.setup(i32 1)
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call void @llvm.call.preallocated.teardown(token %cs)
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ret void
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}
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define void @preallocated_teardown_invoke() personality i8* bitcast (i32 (...)* @__CxxFrameHandler3 to i8*) {
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%cs = call token @llvm.call.preallocated.setup(i32 1)
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%x = call i8* @llvm.call.preallocated.arg(token %cs, i32 0) preallocated(i32)
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%y = bitcast i8* %x to i32*
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invoke void @constructor(i32* %y) to label %conta unwind label %contb
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conta:
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call void @foo1(i32* preallocated(i32) %y) ["preallocated"(token %cs)]
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ret void
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contb:
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%s = catchswitch within none [label %catch] unwind to caller
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catch:
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%p = catchpad within %s []
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call void @llvm.call.preallocated.teardown(token %cs)
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ret void
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}
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