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codegen this loop in stepanov: no_exit.i: ; preds = %entry, %no_exit.i, %then.i, %_Z5checkd.exit %i.0.0 = phi int [ 0, %entry ], [ %i.0.0, %no_exit.i ], [ %inc.0, %_Z5checkd.exit ], [ %inc.012, %then.i ] ; <int> [#uses=3] %indvar = phi uint [ %indvar.next, %no_exit.i ], [ 0, %entry ], [ 0, %then.i ], [ 0, %_Z5checkd.exit ] ; <uint> [#uses=3] %result_addr.i.0 = phi double [ %tmp.4.i.i, %no_exit.i ], [ 0.000000e+00, %entry ], [ 0.000000e+00, %then.i ], [ 0.000000e+00, %_Z5checkd.exit ] ; <double> [#uses=1] %first_addr.0.i.2.rec = cast uint %indvar to int ; <int> [#uses=1] %first_addr.0.i.2 = getelementptr [2000 x double]* %data, int 0, uint %indvar ; <double*> [#uses=1] %inc.i.rec = add int %first_addr.0.i.2.rec, 1 ; <int> [#uses=1] %inc.i = getelementptr [2000 x double]* %data, int 0, int %inc.i.rec ; <double*> [#uses=1] %tmp.3.i.i = load double* %first_addr.0.i.2 ; <double> [#uses=1] %tmp.4.i.i = add double %result_addr.i.0, %tmp.3.i.i ; <double> [#uses=2] %tmp.2.i = seteq double* %inc.i, getelementptr ([2000 x double]* %data, int 0, int 2000) ; <bool> [#uses=1] %indvar.next = add uint %indvar, 1 ; <uint> [#uses=1] br bool %tmp.2.i, label %_Z10accumulateIPddET0_T_S2_S1_.exit, label %no_exit.i To this: .LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i fldl data(,%eax,8) fldl 16(%esp) faddp %st(1) fstpl 16(%esp) incl %eax movl %eax, %ecx shll $3, %ecx cmpl $16000, %ecx #FP_REG_KILL jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i instead of this: .LBB_Z4testIPddEvT_S1_T0__1: # no_exit.i fldl data(,%eax,8) fldl 16(%esp) faddp %st(1) fstpl 16(%esp) incl %eax leal data(,%eax,8), %ecx leal data+16000, %edx cmpl %edx, %ecx #FP_REG_KILL jne .LBB_Z4testIPddEvT_S1_T0__1 # no_exit.i git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19425 91177308-0d34-0410-b5e6-96231b3b80d8 |
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