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58d43d4a41
This allows SCEV users to effectively calculate trip count. LSR later on transforms back integer IVs to floating point IVs later on to avoid int-to-float casts inside the loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58625 91177308-0d34-0410-b5e6-96231b3b80d8
18 lines
535 B
LLVM
18 lines
535 B
LLVM
; RUN: llvm-as < %s | opt -indvars | llvm-dis | grep icmp | count 1
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define void @bar() nounwind {
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entry:
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br label %bb
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bb: ; preds = %bb, %entry
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%x.0.reg2mem.0 = phi double [ 0.000000e+00, %entry ], [ %1, %bb ] ; <double> [#uses=2]
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%0 = tail call i32 @foo(double %x.0.reg2mem.0) nounwind ; <i32> [#uses=0]
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%1 = add double %x.0.reg2mem.0, 1.000000e+00 ; <double> [#uses=2]
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%2 = fcmp olt double %1, 1.000000e+04 ; <i1> [#uses=1]
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br i1 %2, label %bb, label %return
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return: ; preds = %bb
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ret void
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}
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declare i32 @foo(double)
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