[llvm-branch-commits] Add llvm.protected.field.ptr intrinsic and pre-ISel lowering. (PR #151647)

[Nikita Popov via llvm-branch-commits]

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@@ -0,0 +1,46 @@
+; RUN: opt -passes=pre-isel-intrinsic-lowering -S < %s | FileCheck --check-prefixes=CHECK,NOPAUTH %s
+; RUN: opt -passes=pre-isel-intrinsic-lowering -mattr=+pauth -S < %s | FileCheck --check-prefixes=CHECK,PAUTH %s
+
+target triple = "aarch64-unknown-linux-gnu"
+
+; CHECK: @ds1 = external global i8
+ at ds1 = external global i8
+; CHECK: @ds2 = external global i8
+ at ds2 = external global i8
+; CHECK: @ds3 = hidden alias i8, inttoptr (i64 3573751839 to ptr)
+ at ds3 = external global i8
+
+; CHECK: define ptr @f1
+define ptr @f1(ptr %ptrptr) {
+  ; CHECK: %ptr = load ptr, ptr %ptrptr, align 8
+  ; CHECK: %1 = ptrtoint ptr %ptr to i64
+  ; NOPAUTH: %2 = call i64 @__emupac_autda(i64 %1, i64 1) [ "deactivation-symbol"(ptr @ds1) ]
+  ; PAUTH: %2 = call i64 @llvm.ptrauth.auth(i64 %1, i32 2, i64 1) [ "deactivation-symbol"(ptr @ds1) ]
+  ; CHECK: %3 = inttoptr i64 %2 to ptr
+  ; CHECK: ret ptr %3
+  %protptrptr = call ptr @llvm.protected.field.ptr(ptr %ptrptr, i64 1, i1 true) [ "deactivation-symbol"(ptr @ds1) ]
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nikic wrote:

Missing tests for use_hw=false?

https://github.com/llvm/llvm-project/pull/151647