derek.holloway
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105 lines
4.6 KiB
C++
105 lines
4.6 KiB
C++
// Tests that __builtin_clz/__builtin_ctz respect isCLZForZeroUndef() per target.
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// x86 returns true (default), AArch64 returns false.
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// RUN: %clang_cc1 -triple aarch64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
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// RUN: FileCheck --input-file=%t.cir %s -check-prefix=AARCH64-CIR
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// RUN: %clang_cc1 -triple aarch64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll
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// RUN: FileCheck --input-file=%t-cir.ll %s -check-prefix=AARCH64-LLVM
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// RUN: %clang_cc1 -triple aarch64-unknown-linux-gnu -emit-llvm %s -o %t.ll
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// RUN: FileCheck --input-file=%t.ll %s -check-prefix=AARCH64-LLVM
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
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// RUN: FileCheck --input-file=%t.cir %s -check-prefix=X86-CIR
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm %s -o %t-cir.ll
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// RUN: FileCheck --input-file=%t-cir.ll %s -check-prefix=X86-LLVM
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o %t.ll
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// RUN: FileCheck --input-file=%t.ll %s -check-prefix=X86-LLVM
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int test_builtin_ctz(unsigned x) {
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return __builtin_ctz(x);
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}
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// AARCH64-CIR-LABEL: _Z16test_builtin_ctzj
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// AARCH64-CIR: cir.ctz %{{.+}} : !u32i
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// AARCH64-CIR-NOT: poison_zero
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// AARCH64-LLVM-LABEL: _Z16test_builtin_ctzj
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// AARCH64-LLVM: %{{.+}} = call i32 @llvm.cttz.i32(i32 %{{.+}}, i1 false)
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// X86-CIR-LABEL: _Z16test_builtin_ctzj
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// X86-CIR: cir.ctz %{{.+}} poison_zero : !u32i
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// X86-LLVM-LABEL: _Z16test_builtin_ctzj
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// X86-LLVM: %{{.+}} = call i32 @llvm.cttz.i32(i32 %{{.+}}, i1 true)
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int test_builtin_clz(unsigned x) {
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return __builtin_clz(x);
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}
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// AARCH64-CIR-LABEL: _Z16test_builtin_clzj
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// AARCH64-CIR: cir.clz %{{.+}} : !u32i
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// AARCH64-CIR-NOT: poison_zero
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// AARCH64-LLVM-LABEL: _Z16test_builtin_clzj
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// AARCH64-LLVM: %{{.+}} = call i32 @llvm.ctlz.i32(i32 %{{.+}}, i1 false)
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// X86-CIR-LABEL: _Z16test_builtin_clzj
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// X86-CIR: cir.clz %{{.+}} poison_zero : !u32i
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// X86-LLVM-LABEL: _Z16test_builtin_clzj
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// X86-LLVM: %{{.+}} = call i32 @llvm.ctlz.i32(i32 %{{.+}}, i1 true)
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int test_builtin_ctzg_fallback(unsigned x, int fb) {
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return __builtin_ctzg(x, fb);
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}
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// On both targets, the fallback case always uses poison_zero=true.
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// AARCH64-CIR-LABEL: _Z26test_builtin_ctzg_fallbackji
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// AARCH64-CIR: %[[CTZ:.+]] = cir.ctz %{{.+}} poison_zero : !u32i
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// AARCH64-CIR: %[[ZERO:.+]] = cir.const #cir.int<0>
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// AARCH64-CIR: %[[ISZERO:.+]] = cir.cmp eq %{{.+}}, %[[ZERO]] : !u32i
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// AARCH64-CIR: cir.select if %[[ISZERO]]
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// AARCH64-LLVM-LABEL: _Z26test_builtin_ctzg_fallbackji
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// AARCH64-LLVM: %[[CTZ:.+]] = call i32 @llvm.cttz.i32(i32 %{{.+}}, i1 true)
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// AARCH64-LLVM: %[[ISZERO:.+]] = icmp eq i32 %{{.+}}, 0
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// AARCH64-LLVM: select i1 %[[ISZERO]], i32 %{{.+}}, i32 %[[CTZ]]
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// X86-CIR-LABEL: _Z26test_builtin_ctzg_fallbackji
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// X86-CIR: %[[CTZ:.+]] = cir.ctz %{{.+}} poison_zero : !u32i
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// X86-CIR: %[[ZERO:.+]] = cir.const #cir.int<0>
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// X86-CIR: %[[ISZERO:.+]] = cir.cmp eq %{{.+}}, %[[ZERO]] : !u32i
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// X86-CIR: cir.select if %[[ISZERO]]
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// X86-LLVM-LABEL: _Z26test_builtin_ctzg_fallbackji
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// X86-LLVM: %[[CTZ:.+]] = call i32 @llvm.cttz.i32(i32 %{{.+}}, i1 true)
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// X86-LLVM: %[[ISZERO:.+]] = icmp eq i32 %{{.+}}, 0
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// X86-LLVM: select i1 %[[ISZERO]], i32 %{{.+}}, i32 %[[CTZ]]
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int test_builtin_clzg_fallback(unsigned x, int fb) {
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return __builtin_clzg(x, fb);
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}
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// AARCH64-CIR-LABEL: _Z26test_builtin_clzg_fallbackji
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// AARCH64-CIR: %[[CLZ:.+]] = cir.clz %{{.+}} poison_zero : !u32i
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// AARCH64-CIR: %[[ZERO:.+]] = cir.const #cir.int<0>
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// AARCH64-CIR: %[[ISZERO:.+]] = cir.cmp eq %{{.+}}, %[[ZERO]] : !u32i
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// AARCH64-CIR: cir.select if %[[ISZERO]]
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// AARCH64-LLVM-LABEL: _Z26test_builtin_clzg_fallbackji
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// AARCH64-LLVM: %[[CLZ:.+]] = call i32 @llvm.ctlz.i32(i32 %{{.+}}, i1 true)
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// AARCH64-LLVM: %[[ISZERO:.+]] = icmp eq i32 %{{.+}}, 0
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// AARCH64-LLVM: select i1 %[[ISZERO]], i32 %{{.+}}, i32 %[[CLZ]]
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// X86-CIR-LABEL: _Z26test_builtin_clzg_fallbackji
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// X86-CIR: %[[CLZ:.+]] = cir.clz %{{.+}} poison_zero : !u32i
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// X86-CIR: %[[ZERO:.+]] = cir.const #cir.int<0>
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// X86-CIR: %[[ISZERO:.+]] = cir.cmp eq %{{.+}}, %[[ZERO]] : !u32i
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// X86-CIR: cir.select if %[[ISZERO]]
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// X86-LLVM-LABEL: _Z26test_builtin_clzg_fallbackji
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// X86-LLVM: %[[CLZ:.+]] = call i32 @llvm.ctlz.i32(i32 %{{.+}}, i1 true)
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// X86-LLVM: %[[ISZERO:.+]] = icmp eq i32 %{{.+}}, 0
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// X86-LLVM: select i1 %[[ISZERO]], i32 %{{.+}}, i32 %[[CLZ]]
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