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e3372a717a
Const/local/shared address spaces are all < 4GB and we can always use 32-bit pointers to access them. This has substantial performance impact on kernels that uses shared memory for intermediary results. The feature is disabled by default. Differential Revision: https://reviews.llvm.org/D46147 llvm-svn: 331941
98 lines
2.5 KiB
LLVM
98 lines
2.5 KiB
LLVM
; RUN: llc -O0 < %s -march=nvptx -mcpu=sm_20 | FileCheck %s -check-prefixes=ALL,CLS32,G32
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; RUN: llc -O0 < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s -check-prefixes=ALL,NOPTRCONV,CLS64,G64
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; RUN: llc -O0 < %s -march=nvptx64 -mcpu=sm_20 --nvptx-short-ptr| FileCheck %s -check-prefixes=ALL,PTRCONV,CLS64,G64
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; ALL-LABEL: conv1
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define i32 @conv1(i32 addrspace(1)* %ptr) {
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; G32: cvta.global.u32
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; ALL-NOT: cvt.u64.u32
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; G64: cvta.global.u64
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; ALL: ld.u32
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%genptr = addrspacecast i32 addrspace(1)* %ptr to i32*
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%val = load i32, i32* %genptr
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ret i32 %val
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}
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; ALL-LABEL: conv2
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define i32 @conv2(i32 addrspace(3)* %ptr) {
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; CLS32: cvta.shared.u32
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; PTRCONV: cvt.u64.u32
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; NOPTRCONV-NOT: cvt.u64.u32
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; CLS64: cvta.shared.u64
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; ALL: ld.u32
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%genptr = addrspacecast i32 addrspace(3)* %ptr to i32*
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%val = load i32, i32* %genptr
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ret i32 %val
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}
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; ALL-LABEL: conv3
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define i32 @conv3(i32 addrspace(4)* %ptr) {
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; CLS32: cvta.const.u32
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; PTRCONV: cvt.u64.u32
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; NOPTRCONV-NOT: cvt.u64.u32
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; CLS64: cvta.const.u64
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; ALL: ld.u32
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%genptr = addrspacecast i32 addrspace(4)* %ptr to i32*
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%val = load i32, i32* %genptr
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ret i32 %val
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}
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; ALL-LABEL: conv4
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define i32 @conv4(i32 addrspace(5)* %ptr) {
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; CLS32: cvta.local.u32
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; PTRCONV: cvt.u64.u32
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; NOPTRCONV-NOT: cvt.u64.u32
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; CLS64: cvta.local.u64
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; ALL: ld.u32
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%genptr = addrspacecast i32 addrspace(5)* %ptr to i32*
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%val = load i32, i32* %genptr
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ret i32 %val
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}
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; ALL-LABEL: conv5
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define i32 @conv5(i32* %ptr) {
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; CLS32: cvta.to.global.u32
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; ALL-NOT: cvt.u64.u32
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; CLS64: cvta.to.global.u64
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; ALL: ld.global.u32
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%specptr = addrspacecast i32* %ptr to i32 addrspace(1)*
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%val = load i32, i32 addrspace(1)* %specptr
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ret i32 %val
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}
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; ALL-LABEL: conv6
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define i32 @conv6(i32* %ptr) {
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; CLS32: cvta.to.shared.u32
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; CLS64: cvta.to.shared.u64
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; PTRCONV: cvt.u32.u64
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; NOPTRCONV-NOT: cvt.u32.u64
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; ALL: ld.shared.u32
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%specptr = addrspacecast i32* %ptr to i32 addrspace(3)*
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%val = load i32, i32 addrspace(3)* %specptr
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ret i32 %val
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}
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; ALL-LABEL: conv7
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define i32 @conv7(i32* %ptr) {
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; CLS32: cvta.to.const.u32
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; CLS64: cvta.to.const.u64
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; PTRCONV: cvt.u32.u64
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; NOPTRCONV-NOT: cvt.u32.u64
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; ALL: ld.const.u32
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%specptr = addrspacecast i32* %ptr to i32 addrspace(4)*
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%val = load i32, i32 addrspace(4)* %specptr
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ret i32 %val
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}
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; ALL-LABEL: conv8
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define i32 @conv8(i32* %ptr) {
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; CLS32: cvta.to.local.u32
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; CLS64: cvta.to.local.u64
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; PTRCONV: cvt.u32.u64
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; NOPTRCONV-NOT: cvt.u32.u64
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; ALL: ld.local.u32
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%specptr = addrspacecast i32* %ptr to i32 addrspace(5)*
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%val = load i32, i32 addrspace(5)* %specptr
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ret i32 %val
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}
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