376312aa1a
Prior to this patch, libcalls inserted by the `SelectionDAG` legalizer could never be tailcalled. The eligibility of libcalls for tail calling is is partly determined by checking `TargetLowering::isInTailCallPosition` and comparing the return type of the libcall and the caller. `isInTailCallPosition` in turn calls `TargetLowering::isUsedByReturnOnly` (which always returns false if not implemented by the target).
30 lines
726 B
LLVM
30 lines
726 B
LLVM
; Test for checking division is inlined or not in case of Os.
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; RUN: llc -O2 -mtriple=hexagon < %s | FileCheck %s
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define dso_local i32 @testInt(i32 %a, i32 %b) local_unnamed_addr {
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entry:
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;CHECK: call __hexagon_divsi3
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%div = sdiv i32 %a, %b
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%conv = sitofp i32 %div to float
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%conv1 = fptosi float %conv to i32
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ret i32 %conv1
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}
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define dso_local float @testFloat(float %a, float %b) local_unnamed_addr {
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entry:
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;CHECK-NOT: call __hexagon_divsf3
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;CHECK: sfrecipa
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;CHECK: sffixupn
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;CHEKC: and
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;CHECK: sfmpy
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%div = fdiv float %a, %b
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ret float %div
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}
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define dso_local double @testDouble(double %a, double %b) local_unnamed_addr {
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entry:
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;CHECK: jump __hexagon_divdf3
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%div = fdiv double %a, %b
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ret double %div
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}
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