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bd6161d401
-- setCC of FP type used by a Phi: have to save in reg. -- setNE of FP type used by a branch: cannot use result directly in branch! -- setCC used outside the same basic block: have to save in reg. for now git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6382 91177308-0d34-0410-b5e6-96231b3b80d8
64 lines
1.9 KiB
LLVM
64 lines
1.9 KiB
LLVM
;; Date: May 27, 2003.
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;; From: Variant of 2003-05-27-usefsubasbool.ll
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;;
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;; Error: llc fails to save a boolean value in a register (and later uses an
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;; invalid register <NULL VALUE> in a BRNZ) for a boolean value
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;; used only by branches but in a different basic block.
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;;
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;; Cause: In SparcInstrSelection.cpp, for SetCC, when a result of setCC
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;; is used only for branches, it is not saved into an int. register.
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;; But if the boolean is used in a branch in a different basic block,
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;; that branch uses a BRNZ inst. instead of a branch-on-CC.
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;;
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;; LLC Output before fix:
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;; !****** Outputing Function: QRiterate_1 ******
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;;
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;; .section ".text"
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;; .align 4
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;; .global QRiterate_1
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;; .type QRiterate_1, 2
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;; QRiterate_1:
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;; .L_QRiterate_1_LL_0:
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;; save %o6, -192, %o6
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;; sethi %lm(LLVMGlobal__2), %o2
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;; sethi %hh(LLVMGlobal__2), %o1
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;; or %o1, %hm(LLVMGlobal__2), %o1
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;; sllx %o1, 32, %o1
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;; or %o2, %o1, %o2
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;; or %o2, %lo(LLVMGlobal__2), %o2
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;; ldd [%o2+0], %f32
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;; fcmpd %fcc0, %f0, %f32
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;; ba .L_QRiterate_1_LL_1
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;; nop
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;;
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;; .L_QRiterate_1_LL_1:
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;; brnz <NULL_VALUE>, .L_QRiterate_1_LL_1
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;; nop
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;; ba .L_QRiterate_1_LL_2
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;; nop
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;;
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;; .L_QRiterate_1_LL_2:
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;; jmpl %i7+8, %g0
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;; restore %g0, 0, %g0
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;;
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;; .EndOf_QRiterate_1:
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;; .size QRiterate_1, .EndOf_QRiterate_1-QRiterate_1
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;;
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target endian = big
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target pointersize = 64
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implementation ; Functions:
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internal void %QRiterate(double %tmp.212) {
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entry: ; No predecessors!
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%tmp.213 = setne double %tmp.212, 0.000000e+00
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br label %shortcirc_next.1
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shortcirc_next.1: ; preds = %entry
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br bool %tmp.213, label %shortcirc_next.1, label %exit.1
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exit.1:
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ret void
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}
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