1 files changed, 48 insertions, 0 deletions
diff --git a/test/CodeGen/X86/misched-copy.ll b/test/CodeGen/X86/misched-copy.ll
new file mode 100644
index 0000000000..d04df999b9
--- /dev/null
+++ b/test/CodeGen/X86/misched-copy.ll
@@ -0,0 +1,48 @@
+; RUN: llc %s -march=x86 -mcpu=core2 -pre-RA-sched=source -enable-misched -verify-misched -debug-only=misched 2>&1 | FileCheck %s
+;
+; Test scheduling of copy instructions.
+;
+; Argument copies should be hoisted to the top of the block.
+; Return copies should be sunk to the end.
+; MUL_HiLo PhysReg use copies should be just above the mul.
+; MUL_HiLo PhysReg def copies should be just below the mul.
+;
+; CHECK:      *** Final schedule for BB#1 ***
+; CHECK-NEXT: %EAX<def> = COPY
+; CHECK:      MUL32r %vreg{{[0-6]+}}, %EAX<imp-def>, %EDX<imp-def>, %EFLAGS<imp-def,dead>, %EAX<imp-use>;
+; CHECK-NEXT: COPY %EAX;
+; CHECK-NEXT: COPY %EDX;
+; CHECK:      DIVSSrm
+define i64 @mulhoist(i32 %a, i32 %b) #0 {
+entry:
+  br label %body
+
+body:
+  %convb = sitofp i32 %b to float
+  ; Generates an iMUL64r to legalize types.
+  %aa = zext i32 %a to i64
+  %mul = mul i64 %aa, 74383
+  ; Do some dependent long latency stuff.
+  %trunc = trunc i64 %mul to i32
+  %convm = sitofp i32 %trunc to float
+  %divm = fdiv float %convm, 0.75
+  ;%addmb = fadd float %divm, %convb
+  ;%divmb = fdiv float %addmb, 0.125
+  ; Do some independent long latency stuff.
+  %conva = sitofp i32 %a to float
+  %diva = fdiv float %conva, 0.75
+  %addab = fadd float %diva, %convb
+  %divab = fdiv float %addab, 0.125
+  br label %end
+
+end:
+  %val = fptosi float %divab to i64
+  %add = add i64 %mul, %val
+  ret i64 %add
+}
+
+attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!0 = metadata !{metadata !"float", metadata !1}
+!1 = metadata !{metadata !"omnipotent char", metadata !2}
+!2 = metadata !{metadata !"Simple C/C++ TBAA"}