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94473f4db6
Generate nuw GEPs for struct member accesses, as inbounds + non-negative implies nuw. Regression tests are updated using update scripts where possible, and by find + replace where not.
41 lines
1.8 KiB
C
41 lines
1.8 KiB
C
// RUN: %clang_cc1 -emit-llvm -triple x86_64-apple-darwin10 < %s -o - | FileCheck %s
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// CHECK:%struct.S = type { i32, i32 }
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// CHECK:define{{.*}} void @test_addrspace(ptr addrspace(1) noundef %p1, ptr addrspace(2) noundef %p2) [[NUW:#[0-9]+]]
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// CHECK: [[p1addr:%.*]] = alloca ptr addrspace(1)
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// CHECK: [[p2addr:%.*]] = alloca ptr addrspace(2)
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// CHECK: store ptr addrspace(1) %p1, ptr [[p1addr]]
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// CHECK: store ptr addrspace(2) %p2, ptr [[p2addr]]
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// CHECK: [[t0:%.*]] = load ptr addrspace(2), ptr [[p2addr]], align 8
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// CHECK: [[t1:%.*]] = getelementptr inbounds nuw %struct.S, ptr addrspace(2) [[t0]], i32 0, i32 1
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// CHECK: [[t2:%.*]] = load i32, ptr addrspace(2) [[t1]], align 4
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// CHECK: [[t3:%.*]] = load ptr addrspace(1), ptr [[p1addr]], align 8
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// CHECK: [[t4:%.*]] = getelementptr inbounds nuw %struct.S, ptr addrspace(1) [[t3]], i32 0, i32 0
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// CHECK: store i32 [[t2]], ptr addrspace(1) [[t4]], align 4
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// CHECK: [[t5:%.*]] = load ptr addrspace(2), ptr [[p2addr]], align 8
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// CHECK: [[t6:%.*]] = getelementptr inbounds nuw %struct.S, ptr addrspace(2) [[t5]], i32 0, i32 0
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// CHECK: [[t7:%.*]] = load i32, ptr addrspace(2) [[t6]], align 4
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// CHECK: [[t8:%.*]] = load ptr addrspace(1), ptr [[p1addr]], align 8
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// CHECK: [[t9:%.*]] = getelementptr inbounds nuw %struct.S, ptr addrspace(1) [[t8]], i32 0, i32 1
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// CHECK: store i32 [[t7]], ptr addrspace(1) [[t9]], align 4
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// CHECK: ret void
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// CHECK:}
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// Check that we don't lose the address space when accessing a member
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// of a structure.
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#define __addr1 __attribute__((address_space(1)))
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#define __addr2 __attribute__((address_space(2)))
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typedef struct S {
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int a;
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int b;
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} S;
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void test_addrspace(__addr1 S* p1, __addr2 S*p2) {
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// swap
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p1->a = p2->b;
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p1->b = p2->a;
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}
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// CHECK: attributes [[NUW]] = { noinline nounwind{{.*}} }
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