1 ; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs< %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s 2 ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs< %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s 3 ; RUN: llc -march=r600 -mcpu=cypress -verify-machineinstrs< %s 4 5 declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) nounwind readnone 6 declare { i64, i1 } @llvm.usub.with.overflow.i64(i64, i64) nounwind readnone 7 8 ; FUNC-LABEL: {{^}}usubo_i64_zext: 9 define void @usubo_i64_zext(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind { 10 %usub = call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %a, i64 %b) nounwind 11 %val = extractvalue { i64, i1 } %usub, 0 12 %carry = extractvalue { i64, i1 } %usub, 1 13 %ext = zext i1 %carry to i64 14 %add2 = add i64 %val, %ext 15 store i64 %add2, i64 addrspace(1)* %out, align 8 16 ret void 17 } 18 19 ; FUNC-LABEL: {{^}}s_usubo_i32: 20 ; SI: s_sub_i32 21 define void @s_usubo_i32(i32 addrspace(1)* %out, i1 addrspace(1)* %carryout, i32 %a, i32 %b) nounwind { 22 %usub = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b) nounwind 23 %val = extractvalue { i32, i1 } %usub, 0 24 %carry = extractvalue { i32, i1 } %usub, 1 25 store i32 %val, i32 addrspace(1)* %out, align 4 26 store i1 %carry, i1 addrspace(1)* %carryout 27 ret void 28 } 29 30 ; FUNC-LABEL: {{^}}v_usubo_i32: 31 ; SI: v_subrev_i32_e32 32 define void @v_usubo_i32(i32 addrspace(1)* %out, i1 addrspace(1)* %carryout, i32 addrspace(1)* %aptr, i32 addrspace(1)* %bptr) nounwind { 33 %a = load i32, i32 addrspace(1)* %aptr, align 4 34 %b = load i32, i32 addrspace(1)* %bptr, align 4 35 %usub = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b) nounwind 36 %val = extractvalue { i32, i1 } %usub, 0 37 %carry = extractvalue { i32, i1 } %usub, 1 38 store i32 %val, i32 addrspace(1)* %out, align 4 39 store i1 %carry, i1 addrspace(1)* %carryout 40 ret void 41 } 42 43 ; FUNC-LABEL: {{^}}s_usubo_i64: 44 ; SI: s_sub_u32 45 ; SI: s_subb_u32 46 define void @s_usubo_i64(i64 addrspace(1)* %out, i1 addrspace(1)* %carryout, i64 %a, i64 %b) nounwind { 47 %usub = call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %a, i64 %b) nounwind 48 %val = extractvalue { i64, i1 } %usub, 0 49 %carry = extractvalue { i64, i1 } %usub, 1 50 store i64 %val, i64 addrspace(1)* %out, align 8 51 store i1 %carry, i1 addrspace(1)* %carryout 52 ret void 53 } 54 55 ; FUNC-LABEL: {{^}}v_usubo_i64: 56 ; SI: v_sub_i32 57 ; SI: v_subb_u32 58 define void @v_usubo_i64(i64 addrspace(1)* %out, i1 addrspace(1)* %carryout, i64 addrspace(1)* %aptr, i64 addrspace(1)* %bptr) nounwind { 59 %a = load i64, i64 addrspace(1)* %aptr, align 4 60 %b = load i64, i64 addrspace(1)* %bptr, align 4 61 %usub = call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %a, i64 %b) nounwind 62 %val = extractvalue { i64, i1 } %usub, 0 63 %carry = extractvalue { i64, i1 } %usub, 1 64 store i64 %val, i64 addrspace(1)* %out, align 8 65 store i1 %carry, i1 addrspace(1)* %carryout 66 ret void 67 } 68
