10edb4991c
At the moment, Clang is rather liberal in assuming that 0 (and by extension unqualified) is always a safe default. This does not work for targets that actually use a different value for the default / generic AS (for example, the SPIRV that obtains from HIPSPV or SYCL). This patch is a first, fairly safe step towards trying to clear things up by querying a modules' default AS from the target, rather than assuming it's 0, alongside fixing a few places where things break / we encode the 0 == DefaultAS assumption. A bunch of existing tests are extended to check for non-zero default AS usage.
43 lines
3.1 KiB
C++
43 lines
3.1 KiB
C++
// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -std=c++20 %s -emit-llvm -o - | FileCheck %s
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// RUN: %clang_cc1 -triple spirv64-unknown-unknown -fsycl-is-device -std=c++20 %s -emit-llvm -o - | FileCheck %s --check-prefix=WITH-NONZERO-DEFAULT-AS
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struct S { char buf[32]; };
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template<S s> constexpr const char *begin() { return s.buf; }
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template<S s> constexpr const char *end() { return s.buf + __builtin_strlen(s.buf); }
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template<S s> constexpr const void *retval() { return &s; }
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extern const void *callee(const S*);
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template<S s> constexpr const void* observable_addr() { return callee(&s); }
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// CHECK: [[HELLO:@_ZTAXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEE]]
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// WITH-NONZERO-DEFAULT-AS: [[HELLO:@_ZTAXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEE]]
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// CHECK-SAME: = linkonce_odr addrspace(1) constant { <{ [11 x i8], [21 x i8] }> } { <{ [11 x i8], [21 x i8] }> <{ [11 x i8] c"hello world", [21 x i8] zeroinitializer }> }, comdat
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// CHECK: @p
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// CHECK-SAME: addrspace(1) global ptr addrspacecast (ptr addrspace(1) [[HELLO]] to ptr)
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// WITH-NONZERO-DEFAULT-AS: addrspace(1) global ptr addrspace(4) addrspacecast (ptr addrspace(1) [[HELLO]] to ptr addrspace(4))
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const char *p = begin<S{"hello world"}>();
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// CHECK: @q
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// CHECK-SAME: addrspace(1) global ptr addrspacecast (ptr addrspace(1) getelementptr (i8, ptr addrspace(1) [[HELLO]], i64 11) to ptr)
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// WITH-NONZERO-DEFAULT-AS: addrspace(1) global ptr addrspace(4) addrspacecast (ptr addrspace(1) getelementptr (i8, ptr addrspace(1) [[HELLO]], i64 11) to ptr addrspace(4))
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const char *q = end<S{"hello world"}>();
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const void *(*r)() = &retval<S{"hello world"}>;
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// CHECK: @s
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// CHECK-SAME: addrspace(1) global ptr null
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// WITH-NONZERO-DEFAULT-AS: addrspace(1) global ptr addrspace(4) null
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const void *s = observable_addr<S{"hello world"}>();
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// CHECK: define linkonce_odr noundef ptr @_Z6retvalIXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEEEPKvv()
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// WITH-NONZERO-DEFAULT-AS: define linkonce_odr {{.*}} noundef ptr addrspace(4) @_Z6retvalIXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEEEPKvv()
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// CHECK: ret ptr addrspacecast (ptr addrspace(1) [[HELLO]] to ptr)
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// WITH-NONZERO-DEFAULT-AS: ret ptr addrspace(4) addrspacecast (ptr addrspace(1) [[HELLO]] to ptr addrspace(4))
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// CHECK: define linkonce_odr noundef ptr @_Z15observable_addrIXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEEEPKvv()
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// WITH-NONZERO-DEFAULT-AS: define linkonce_odr {{.*}} noundef ptr addrspace(4) @_Z15observable_addrIXtl1StlA32_cLc104ELc101ELc108ELc108ELc111ELc32ELc119ELc111ELc114ELc108ELc100EEEEEPKvv()
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// CHECK: %call = call noundef ptr @_Z6calleePK1S(ptr noundef addrspacecast (ptr addrspace(1) [[HELLO]] to ptr))
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// WITH-NONZERO-DEFAULT-AS: %call = call {{.*}} noundef ptr addrspace(4) @_Z6calleePK1S(ptr addrspace(4) noundef addrspacecast (ptr addrspace(1) [[HELLO]] to ptr addrspace(4)))
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// CHECK: declare noundef ptr @_Z6calleePK1S(ptr noundef)
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// WITH-NONZERO-DEFAULT-AS: declare {{.*}} noundef ptr addrspace(4) @_Z6calleePK1S(ptr addrspace(4) noundef)
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