f2a78e68ee
Summary: Currently, the AMDGPU toolchain accepts not passing `-mcpu` as a means to create a sort of "generic" IR. The resulting IR will not contain any target dependent attributes and can then be inserted into another program via `-mlink-builtin-bitcode` to inherit its attributes. However, there are a handful of macros that can leak incorrect information when compiling for an unspecified architecture. Currently, things like the wavefront size will default to 64, which is actually variable. We should not expose these macros unless it is known.
50 lines
2.1 KiB
Common Lisp
50 lines
2.1 KiB
Common Lisp
// RUN: %clang_cc1 -cl-std=CL2.0 -triple amdgcn-unknown-unknown -target-feature +wavefrontsize64 -S -emit-llvm -o - %s | FileCheck -enable-var-scope %s
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// RUN: %clang_cc1 -cl-std=CL2.0 -triple amdgcn-unknown-unknown -target-cpu gfx900 -S -emit-llvm -o - %s | FileCheck -enable-var-scope %s
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// RUN: %clang_cc1 -cl-std=CL2.0 -triple amdgcn-unknown-unknown -target-cpu gfx900 -target-feature +wavefrontsize64 -S -emit-llvm -o - %s | FileCheck -enable-var-scope %s
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// RUN: %clang_cc1 -cl-std=CL2.0 -triple amdgcn-unknown-unknown -target-cpu gfx1010 -target-feature +wavefrontsize64 -S -emit-llvm -o - %s | FileCheck -enable-var-scope %s
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// RUN: %clang_cc1 -cl-std=CL2.0 -triple amdgcn-unknown-unknown -target-cpu gfx1100 -target-feature +wavefrontsize64 -S -emit-llvm -o - %s | FileCheck -enable-var-scope %s
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typedef unsigned long ulong;
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// CHECK-LABEL: @test_ballot_wave64(
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// CHECK: call i64 @llvm.amdgcn.ballot.i64(i1 %{{.+}})
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void test_ballot_wave64(global ulong* out, int a, int b)
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{
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*out = __builtin_amdgcn_ballot_w64(a == b);
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}
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// CHECK: declare i64 @llvm.amdgcn.ballot.i64(i1) #[[$NOUNWIND_READONLY:[0-9]+]]
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// CHECK-LABEL: @test_ballot_wave64_target_attr(
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// CHECK: call i64 @llvm.amdgcn.ballot.i64(i1 %{{.+}})
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__attribute__((target("wavefrontsize64")))
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void test_ballot_wave64_target_attr(global ulong* out, int a, int b)
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{
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*out = __builtin_amdgcn_ballot_w64(a == b);
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}
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// CHECK-LABEL: @test_read_exec(
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// CHECK: call i64 @llvm.amdgcn.ballot.i64(i1 true)
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void test_read_exec(global ulong* out) {
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*out = __builtin_amdgcn_read_exec();
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}
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// CHECK-LABEL: @test_read_exec_lo(
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// CHECK: call i32 @llvm.amdgcn.ballot.i32(i1 true)
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void test_read_exec_lo(global ulong* out) {
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*out = __builtin_amdgcn_read_exec_lo();
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}
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// CHECK: declare i32 @llvm.amdgcn.ballot.i32(i1) #[[$NOUNWIND_READONLY:[0-9]+]]
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// CHECK-LABEL: @test_read_exec_hi(
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// CHECK: call i64 @llvm.amdgcn.ballot.i64(i1 true)
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// CHECK: lshr i64 [[A:%.*]], 32
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void test_read_exec_hi(global ulong* out) {
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*out = __builtin_amdgcn_read_exec_hi();
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}
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#if defined(__AMDGCN_WAVEFRONT_SIZE__) && __AMDGCN_WAVEFRONT_SIZE__ != 64
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#error Wrong wavesize detected
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#endif
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