https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83190
Leslie Zhai <lesliezhai at llvm dot org.cn> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |lesliezhai at llvm dot org.cn --- Comment #6 from Leslie Zhai <lesliezhai at llvm dot org.cn> --- (In reply to Martin Sebor from comment #1) > Clang emits optimal code for both functions. Yep! ; ModuleID = 'a.c' source_filename = "a.c" target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-redhat-linux" ; Function Attrs: norecurse nounwind readnone uwtable define i32 @f() local_unnamed_addr #0 { ret i32 0 } ; Function Attrs: norecurse nounwind readnone uwtable define i32 @g() local_unnamed_addr #0 { ret i32 0 } attributes #0 = { norecurse nounwind readnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } !llvm.module.flags = !{!0} !llvm.ident = !{!1} !0 = !{i32 1, !"wchar_size", i32 4} !1 = !{!"LLVM China clang version 7.0.0 (g...@github.com:llvm-mirror/clang.git 87bcdaa7f2311f57c35c18efc6cbf5a973a67de7) (g...@github.com:llvm-mirror/llvm.git 4eeea16aaacd6134fd411abcdbab15b630f3302b) (based on LLVM 7.0.0svn)"}