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; RUN: llc -debug < %s -o /dev/null 2>&1 | FileCheck %s
; Verify that the backend correctly overrides the optimization level
; of optnone functions during instruction selection.
define float @foo(float %x) #0 {
entry:
%add = fadd fast float %x, %x
%add1 = fadd fast float %add, %x
ret float %add1
}
; CHECK-NOT: Changing optimization level for Function foo
; CHECK-NOT: Restoring optimization level for Function foo
; Function Attrs: noinline optnone
define float @fooWithOptnone(float %x) #1 {
entry:
%add = fadd fast float %x, %x
%add1 = fadd fast float %add, %x
ret float %add1
}
; CHECK: Changing optimization level for Function fooWithOptnone
; CHECK-NEXT: Before: -O2 ; After: -O0
; CHECK: Restoring optimization level for Function fooWithOptnone
; CHECK-NEXT: Before: -O0 ; After: -O2
attributes #0 = { "unsafe-fp-math"="true" }
attributes #1 = { noinline optnone "unsafe-fp-math"="true" }
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