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d498c8f2c8
%reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1 %reg1029<def> = MOV8rr %reg1028 %reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead> insert => %reg1030<def> = MOV8rr %reg1028 %reg1030<def> = ADD8rr %reg1028<kill>, %reg1029<kill>, %EFLAGS<imp-def,dead> In this case, it might not be possible to coalesce the second MOV8rr instruction if the first one is coalesced. So it would be profitable to commute it: %reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1 %reg1029<def> = MOV8rr %reg1028 %reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead> insert => %reg1030<def> = MOV8rr %reg1029 %reg1030<def> = ADD8rr %reg1029<kill>, %reg1028<kill>, %EFLAGS<imp-def,dead> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62954 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
2.5 KiB
LLVM
51 lines
2.5 KiB
LLVM
; RUN: llvm-as < %s | llc -march=x86 -stats |& grep {Number of re-materialization} | grep 4
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; RUN: llvm-as < %s | llc -march=x86 -stats |& grep {Number of dead spill slots removed}
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; rdar://5761454
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%struct.quad_struct = type { i32, i32, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct*, %struct.quad_struct* }
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define %struct.quad_struct* @MakeTree(i32 %size, i32 %center_x, i32 %center_y, i32 %lo_proc, i32 %hi_proc, %struct.quad_struct* %parent, i32 %ct, i32 %level) nounwind {
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entry:
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br i1 true, label %bb43.i, label %bb.i
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bb.i: ; preds = %entry
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ret %struct.quad_struct* null
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bb43.i: ; preds = %entry
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br i1 true, label %CheckOutside.exit40.i, label %bb11.i38.i
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bb11.i38.i: ; preds = %bb43.i
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ret %struct.quad_struct* null
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CheckOutside.exit40.i: ; preds = %bb43.i
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br i1 true, label %CheckOutside.exit30.i, label %bb11.i28.i
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bb11.i28.i: ; preds = %CheckOutside.exit40.i
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ret %struct.quad_struct* null
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CheckOutside.exit30.i: ; preds = %CheckOutside.exit40.i
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br i1 true, label %CheckOutside.exit20.i, label %bb11.i18.i
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bb11.i18.i: ; preds = %CheckOutside.exit30.i
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ret %struct.quad_struct* null
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CheckOutside.exit20.i: ; preds = %CheckOutside.exit30.i
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br i1 true, label %bb34, label %bb11.i8.i
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bb11.i8.i: ; preds = %CheckOutside.exit20.i
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ret %struct.quad_struct* null
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bb34: ; preds = %CheckOutside.exit20.i
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%tmp15.reg2mem.0 = sdiv i32 %size, 2 ; <i32> [#uses=7]
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%tmp85 = sub i32 %center_y, %tmp15.reg2mem.0 ; <i32> [#uses=2]
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%tmp88 = sub i32 %center_x, %tmp15.reg2mem.0 ; <i32> [#uses=2]
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%tmp92 = tail call %struct.quad_struct* @MakeTree( i32 %tmp15.reg2mem.0, i32 %tmp88, i32 %tmp85, i32 0, i32 %hi_proc, %struct.quad_struct* null, i32 2, i32 0 ) nounwind ; <%struct.quad_struct*> [#uses=0]
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%tmp99 = add i32 0, %hi_proc ; <i32> [#uses=1]
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%tmp100 = sdiv i32 %tmp99, 2 ; <i32> [#uses=1]
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%tmp110 = tail call %struct.quad_struct* @MakeTree( i32 %tmp15.reg2mem.0, i32 0, i32 %tmp85, i32 0, i32 %tmp100, %struct.quad_struct* null, i32 3, i32 0 ) nounwind ; <%struct.quad_struct*> [#uses=0]
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%tmp122 = add i32 %tmp15.reg2mem.0, %center_y ; <i32> [#uses=2]
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%tmp129 = tail call %struct.quad_struct* @MakeTree( i32 %tmp15.reg2mem.0, i32 0, i32 %tmp122, i32 0, i32 0, %struct.quad_struct* null, i32 1, i32 0 ) nounwind ; <%struct.quad_struct*> [#uses=0]
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%tmp147 = tail call %struct.quad_struct* @MakeTree( i32 %tmp15.reg2mem.0, i32 %tmp88, i32 %tmp122, i32 %lo_proc, i32 0, %struct.quad_struct* null, i32 0, i32 0 ) nounwind ; <%struct.quad_struct*> [#uses=0]
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unreachable
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}
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