bf79d4819e
1. The PR proceeds with a backend target hook to allow front-ends to determine what target features are available in a compilation based on the CPU name. 2. Fix a backend target feature bug that supports HTM for Power8/9/10/11. However, HTM is only supported on Power8/9 according to the ISA. 3. All target features that are hardcoded in PPC.cpp can be retrieved from the backend target feature. I have double-checked that the hardcoded logic for inferring target features from the CPU in the frontend(PPC.cpp) is the same as in PPC.td. The reland patch addressed the comment https://github.com/llvm/llvm-project/pull/137670#discussion_r2143541120
40 lines
1.8 KiB
C++
40 lines
1.8 KiB
C++
// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck --check-prefixes=CHECK,LINUX_AIX %s
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// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple powerpc64-unknown-aix-xcoff | FileCheck --check-prefixes=CHECK,LINUX_AIX %s
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// RUN: %clang_cc1 -std=c++11 -emit-llvm %s -o - -triple x86_64-apple-darwin12 | FileCheck --check-prefix=CHECK --check-prefix=DARWIN %s
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int &f();
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// LINUX_AIX: @r ={{.*}} thread_local global ptr null
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// DARWIN: @r = internal thread_local global ptr null
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thread_local int &r = f();
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// LINUX_AIX: @_ZTH1r ={{.*}} alias void (), ptr @__tls_init
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// DARWIN: @_ZTH1r = internal alias void (), ptr @__tls_init
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int &g() { return r; }
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// CHECK: define {{.*}} @[[R_INIT:.*]]()
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// CHECK: call noundef nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @_Z1fv()
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// CHECK: %[[R_ADDR:.+]] = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @r)
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// CHECK: store ptr %{{.*}}, ptr %[[R_ADDR]], align 8
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// CHECK-LABEL: define{{.*}} nonnull align {{[0-9]+}} dereferenceable({{[0-9]+}}) ptr @_Z1gv()
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// LINUX_AIX: call ptr @_ZTW1r()
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// DARWIN: call cxx_fast_tlscc ptr @_ZTW1r()
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// CHECK: ret ptr %{{.*}}
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// LINUX_AIX: define weak_odr hidden noundef ptr @_ZTW1r() [[ATTR0:#[0-9]+]]{{( comdat)?}} {
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// DARWIN: define cxx_fast_tlscc noundef ptr @_ZTW1r() [[ATTR1:#[0-9]+]] {
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// LINUX_AIX: call void @_ZTH1r()
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// DARWIN: call cxx_fast_tlscc void @_ZTH1r()
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// CHECK: %[[R_ADDR2:.+]] = call align 8 ptr @llvm.threadlocal.address.p0(ptr align 8 @r)
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// CHECK: load ptr, ptr %[[R_ADDR2]], align 8
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// CHECK: ret ptr %{{.*}}
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// LINUX_AIX-LABEL: define internal void @__tls_init()
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// DARWIN-LABEL: define internal cxx_fast_tlscc void @__tls_init()
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// CHECK: call void @[[R_INIT]]()
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// LINUX_AIX: attributes [[ATTR0]] = { {{.*}} }
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// DARWIN: attributes [[ATTR1]] = { {{.*}}nounwind{{.*}}"target-features"{{.*}} }
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