derek.holloway
7502bf64a4
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68 lines
2.8 KiB
C
68 lines
2.8 KiB
C
// RUN: %clang_cc1 -x c -ffreestanding %s -triple=x86_64-unknown-unknown -no-enable-noundef-analysis -emit-llvm -o - | FileCheck %s
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// RUN: %clang_cc1 -x c++ -std=c++11 -ffreestanding %s -triple=x86_64-unknown-unknown -no-enable-noundef-analysis -emit-llvm -o - | FileCheck %s
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// RUN: %clang_cc1 -x c -ffreestanding %s -triple=x86_64-unknown-unknown -no-enable-noundef-analysis -emit-llvm -o - -fexperimental-new-constant-interpreter | FileCheck %s
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// RUN: %clang_cc1 -x c++ -std=c++11 -ffreestanding %s -triple=x86_64-unknown-unknown -no-enable-noundef-analysis -emit-llvm -o - -fexperimental-new-constant-interpreter | FileCheck %s
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// PR33722
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// RUN: %clang_cc1 -x c -ffreestanding %s -triple x86_64-unknown-unknown -fms-extensions -fms-compatibility-version=19.00 -no-enable-noundef-analysis -emit-llvm -o - | FileCheck %s
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// RUN: %clang_cc1 -x c++ -ffreestanding %s -triple x86_64-unknown-unknown -fms-extensions -fms-compatibility-version=19.00 -no-enable-noundef-analysis -emit-llvm -o - | FileCheck %s
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#include <x86intrin.h>
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#include "builtin_test_helpers.h"
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int test_bit_scan_forward(int a) {
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// CHECK-LABEL: test_bit_scan_forward
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// CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true)
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// CHECK: ret i32 %[[call]]
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return _bit_scan_forward(a);
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}
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TEST_CONSTEXPR(_bit_scan_forward(0x00000001) == 0);
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TEST_CONSTEXPR(_bit_scan_forward(0x10000000) == 28);
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int test_bit_scan_reverse(int a) {
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// CHECK-LABEL: test_bit_scan_reverse
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// CHECK: %[[call:.*]] = call i32 @llvm.ctlz.i32(i32 %{{.*}}, i1 true)
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// CHECK: %[[sub:.*]] = sub nsw i32 31, %[[call]]
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// CHECK: ret i32 %[[sub]]
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return _bit_scan_reverse(a);
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}
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TEST_CONSTEXPR(_bit_scan_reverse(0x00000001) == 0);
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TEST_CONSTEXPR(_bit_scan_reverse(0x01000000) == 24);
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int test__bsfd(int X) {
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// CHECK-LABEL: test__bsfd
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// CHECK: %[[call:.*]] = call i32 @llvm.cttz.i32(i32 %{{.*}}, i1 true)
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return __bsfd(X);
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}
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TEST_CONSTEXPR(__bsfd(0x00000008) == 3);
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TEST_CONSTEXPR(__bsfd(0x00010008) == 3);
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int test__bsfq(long long X) {
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// CHECK-LABEL: test__bsfq
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// CHECK: %[[call:.*]] = call i64 @llvm.cttz.i64(i64 %{{.*}}, i1 true)
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return __bsfq(X);
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}
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TEST_CONSTEXPR(__bsfq(0x0000000800000000ULL) == 35);
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TEST_CONSTEXPR(__bsfq(0x0004000000000000ULL) == 50);
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int test__bsrd(int X) {
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// CHECK-LABEL: test__bsrd
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// CHECK: %[[call:.*]] = call i32 @llvm.ctlz.i32(i32 %{{.*}}, i1 true)
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// CHECK: %[[sub:.*]] = sub nsw i32 31, %[[call]]
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return __bsrd(X);
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}
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TEST_CONSTEXPR(__bsrd(0x00000010) == 4);
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TEST_CONSTEXPR(__bsrd(0x00100100) == 20);
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int test__bsrq(long long X) {
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// CHECK-LABEL: test__bsrq
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// CHECK: %[[call:.*]] = call i64 @llvm.ctlz.i64(i64 %{{.*}}, i1 true)
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// CHECK: %[[cast:.*]] = trunc i64 %[[call]] to i32
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// CHECK: %[[sub:.*]] = sub nsw i32 63, %[[cast]]
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return __bsrq(X);
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}
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TEST_CONSTEXPR(__bsrq(0x0000100800000000ULL) == 44);
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TEST_CONSTEXPR(__bsrq(0x0004000100000000ULL) == 50);
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