mirror of
https://github.com/c64scene-ar/llvm-6502.git
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a017ce21ba
Revert "Remove default in fully-covered switch (to fix Clang -Werror -Wcovered-switch-default)" Revert "R600: Add carry and borrow instructions. Use them to implement UADDO/USUBO" Revert "LegalizeDAG: Try to use Overflow operations when expanding ADD/SUB" Using overflow operations fails CodeGen/Generic/2011-07-07-ScheduleDAGCrash.ll on hexagon, nvptx, and r600. Revert while I investigate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234768 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
2.8 KiB
LLVM
68 lines
2.8 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs< %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
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; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs< %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
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; RUN: llc -march=r600 -mcpu=cypress -verify-machineinstrs< %s
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declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32) nounwind readnone
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declare { i64, i1 } @llvm.usub.with.overflow.i64(i64, i64) nounwind readnone
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; FUNC-LABEL: {{^}}usubo_i64_zext:
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define void @usubo_i64_zext(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind {
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%usub = call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %a, i64 %b) nounwind
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%val = extractvalue { i64, i1 } %usub, 0
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%carry = extractvalue { i64, i1 } %usub, 1
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%ext = zext i1 %carry to i64
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%add2 = add i64 %val, %ext
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store i64 %add2, i64 addrspace(1)* %out, align 8
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ret void
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}
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; FUNC-LABEL: {{^}}s_usubo_i32:
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; SI: s_sub_i32
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define void @s_usubo_i32(i32 addrspace(1)* %out, i1 addrspace(1)* %carryout, i32 %a, i32 %b) nounwind {
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%usub = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b) nounwind
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%val = extractvalue { i32, i1 } %usub, 0
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%carry = extractvalue { i32, i1 } %usub, 1
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store i32 %val, i32 addrspace(1)* %out, align 4
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store i1 %carry, i1 addrspace(1)* %carryout
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ret void
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}
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; FUNC-LABEL: {{^}}v_usubo_i32:
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; SI: v_subrev_i32_e32
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define void @v_usubo_i32(i32 addrspace(1)* %out, i1 addrspace(1)* %carryout, i32 addrspace(1)* %aptr, i32 addrspace(1)* %bptr) nounwind {
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%a = load i32, i32 addrspace(1)* %aptr, align 4
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%b = load i32, i32 addrspace(1)* %bptr, align 4
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%usub = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b) nounwind
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%val = extractvalue { i32, i1 } %usub, 0
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%carry = extractvalue { i32, i1 } %usub, 1
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store i32 %val, i32 addrspace(1)* %out, align 4
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store i1 %carry, i1 addrspace(1)* %carryout
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ret void
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}
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; FUNC-LABEL: {{^}}s_usubo_i64:
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; SI: s_sub_u32
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; SI: s_subb_u32
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define void @s_usubo_i64(i64 addrspace(1)* %out, i1 addrspace(1)* %carryout, i64 %a, i64 %b) nounwind {
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%usub = call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %a, i64 %b) nounwind
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%val = extractvalue { i64, i1 } %usub, 0
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%carry = extractvalue { i64, i1 } %usub, 1
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store i64 %val, i64 addrspace(1)* %out, align 8
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store i1 %carry, i1 addrspace(1)* %carryout
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ret void
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}
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; FUNC-LABEL: {{^}}v_usubo_i64:
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; SI: v_sub_i32
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; SI: v_subb_u32
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define void @v_usubo_i64(i64 addrspace(1)* %out, i1 addrspace(1)* %carryout, i64 addrspace(1)* %aptr, i64 addrspace(1)* %bptr) nounwind {
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%a = load i64, i64 addrspace(1)* %aptr, align 4
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%b = load i64, i64 addrspace(1)* %bptr, align 4
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%usub = call { i64, i1 } @llvm.usub.with.overflow.i64(i64 %a, i64 %b) nounwind
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%val = extractvalue { i64, i1 } %usub, 0
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%carry = extractvalue { i64, i1 } %usub, 1
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store i64 %val, i64 addrspace(1)* %out, align 8
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store i1 %carry, i1 addrspace(1)* %carryout
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ret void
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}
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