derek.holloway
7502bf64a4
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99 lines
3.0 KiB
LLVM
99 lines
3.0 KiB
LLVM
; RUN: llc -mtriple aarch64-linux-gnu -mattr=+pauth -asm-verbose=false -disable-post-ra -o - %s | FileCheck %s
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; CHECK-LABEL: test_tailcall:
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; CHECK-NEXT: pacibsp
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; CHECK-NEXT: str x30, [sp, #-16]!
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; CHECK-NEXT: bl bar
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; CHECK-NEXT: ldr x30, [sp], #16
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; CHECK-NEXT: autibsp
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; CHECK-NEXT: eor x16, x30, x30, lsl #1
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; CHECK-NEXT: tbz x16, #62, [[GOOD:.L.*]]
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; CHECK-NEXT: brk #0xc471
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; CHECK-NEXT: [[GOOD]]:
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; CHECK-NEXT: b bar
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define i32 @test_tailcall() #0 {
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call i32 @bar()
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%c = tail call i32 @bar()
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ret i32 %c
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}
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; CHECK-LABEL: test_tailcall_noframe:
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; CHECK-NEXT: b bar
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define i32 @test_tailcall_noframe() #0 {
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%c = tail call i32 @bar()
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ret i32 %c
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}
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; CHECK-LABEL: test_tailcall_indirect:
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; CHECK: autibsp
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; CHECK: eor x16, x30, x30, lsl #1
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; CHECK: tbz x16, #62, [[GOOD:.L.*]]
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; CHECK: brk #0xc471
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; CHECK: [[GOOD]]:
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; CHECK: br x0
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define void @test_tailcall_indirect(ptr %fptr) #0 {
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call i32 @test_tailcall()
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tail call void %fptr()
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ret void
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}
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; CHECK-LABEL: test_tailcall_indirect_in_x9:
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; CHECK: autibsp
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; CHECK: eor x16, x30, x30, lsl #1
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; CHECK: tbz x16, #62, [[GOOD:.L.*]]
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; CHECK: brk #0xc471
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; CHECK: [[GOOD]]:
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; CHECK: br x9
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define void @test_tailcall_indirect_in_x9(ptr sret(i64) %ret, [8 x i64] %in, ptr %fptr) #0 {
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%ptr = alloca i8, i32 16
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call i32 @test_tailcall()
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tail call void %fptr(ptr sret(i64) %ret, [8 x i64] %in)
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ret void
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}
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; CHECK-LABEL: test_auth_tailcall_indirect:
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; CHECK: autibsp
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; CHECK: eor x16, x30, x30, lsl #1
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; CHECK: tbz x16, #62, [[GOOD:.L.*]]
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; CHECK: brk #0xc471
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; CHECK: [[GOOD]]:
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; CHECK: mov x16, #42
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; CHECK: braa x0, x16
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define void @test_auth_tailcall_indirect(ptr %fptr) #0 {
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call i32 @test_tailcall()
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tail call void %fptr() [ "ptrauth"(i32 0, i64 42) ]
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ret void
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}
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; CHECK-LABEL: test_auth_tailcall_indirect_in_x9:
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; CHECK: autibsp
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; CHECK: eor x16, x30, x30, lsl #1
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; CHECK: tbz x16, #62, [[GOOD:.L.*]]
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; CHECK: brk #0xc471
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; CHECK: [[GOOD]]:
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; CHECK: brabz x9
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define void @test_auth_tailcall_indirect_in_x9(ptr sret(i64) %ret, [8 x i64] %in, ptr %fptr) #0 {
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%ptr = alloca i8, i32 16
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call i32 @test_tailcall()
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tail call void %fptr(ptr sret(i64) %ret, [8 x i64] %in) [ "ptrauth"(i32 1, i64 0) ]
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ret void
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}
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; CHECK-LABEL: test_auth_tailcall_indirect_bti:
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; CHECK: autibsp
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; CHECK: eor x17, x30, x30, lsl #1
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; CHECK: tbz x17, #62, [[GOOD:.L.*]]
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; CHECK: brk #0xc471
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; CHECK: [[GOOD]]:
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; CHECK: brabz x16
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define void @test_auth_tailcall_indirect_bti(ptr sret(i64) %ret, [8 x i64] %in, ptr %fptr) #0 "branch-target-enforcement"="true" {
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%ptr = alloca i8, i32 16
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call i32 @test_tailcall()
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tail call void %fptr(ptr sret(i64) %ret, [8 x i64] %in) [ "ptrauth"(i32 1, i64 0) ]
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ret void
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}
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declare i32 @bar()
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attributes #0 = { nounwind "ptrauth-returns" "ptrauth-auth-traps" }
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