derek.holloway
7502bf64a4
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48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
// RUN: %clang_cc1 -triple=x86_64-apple-darwin -fsanitize=shift-exponent,shift-base -emit-llvm %s -o - | FileCheck %s
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// CHECK-LABEL: define{{.*}} i32 @f1
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int f1(int c, int shamt) {
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// CHECK: icmp ule i32 %{{.*}}, 31, !nosanitize
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// CHECK: icmp ule i32 %{{.*}}, 31, !nosanitize
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return 1 << (c << shamt);
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}
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// CHECK-LABEL: define{{.*}} i32 @f2
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int f2(long c, int shamt) {
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// CHECK: icmp ule i32 %{{.*}}, 63, !nosanitize
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// CHECK: icmp ule i64 %{{.*}}, 31, !nosanitize
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return 1 << (c << shamt);
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}
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// CHECK-LABEL: define{{.*}} i32 @f3
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unsigned f3(unsigned c, int shamt) {
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// CHECK: icmp ule i32 %{{.*}}, 31, !nosanitize
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// CHECK: icmp ule i32 %{{.*}}, 31, !nosanitize
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return 1U << (c << shamt);
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}
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// CHECK-LABEL: define{{.*}} i32 @f4
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unsigned f4(unsigned long c, int shamt) {
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// CHECK: icmp ule i32 %{{.*}}, 63, !nosanitize
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// CHECK: icmp ule i64 %{{.*}}, 31, !nosanitize
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return 1U << (c << shamt);
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}
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// CHECK-LABEL: define{{.*}} i32 @f5
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int f5(int c, long long shamt) {
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// CHECK: icmp ule i64 %{{[0-9]+}}, 31, !nosanitize
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//
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// CHECK: sub nuw nsw i32 31, %sh_prom, !nosanitize
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// CHECK: lshr i32 %{{.*}}, %shl.zeros, !nosanitize
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return c << shamt;
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}
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// CHECK-LABEL: define{{.*}} i32 @f6
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int f6(int c, int shamt) {
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// CHECK: icmp ule i32 %[[WIDTH:.*]], 31, !nosanitize
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//
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// CHECK: sub nuw nsw i32 31, %[[WIDTH]], !nosanitize
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// CHECK: lshr i32 %{{.*}}, %shl.zeros, !nosanitize
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return c << shamt;
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}
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