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llvm-6502/test/CodeGen/X86/masked-iv-safe.ll
Dan Gohman 572645cf84 Reapply the new LoopStrengthReduction code, with compile time and 
bug fixes, and with improved heuristics for analyzing foreign-loop
addrecs.

This change also flattens IVUsers, eliminating the stride-oriented
groupings, which makes it easier to work with.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95975 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-12 10:34:29 +00:00

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LLVM
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; RUN: llc < %s -march=x86-64 > %t
; RUN: not grep and %t
; RUN: not grep movz %t
; RUN: not grep sar %t
; RUN: not grep shl %t
; RUN: grep add %t | count 2
; RUN: grep inc %t | count 4
; RUN: grep dec %t | count 2
; RUN: grep lea %t | count 2
; Optimize away zext-inreg and sext-inreg on the loop induction
; variable using trip-count information.
define void @count_up(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop:
%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %loop ]
%indvar.i8 = and i64 %indvar, 255
%t0 = getelementptr double* %d, i64 %indvar.i8
%t1 = load double* %t0
%t2 = fmul double %t1, 0.1
store double %t2, double* %t0
%indvar.i24 = and i64 %indvar, 16777215
%t3 = getelementptr double* %d, i64 %indvar.i24
%t4 = load double* %t3
%t5 = fmul double %t4, 2.3
store double %t5, double* %t3
%t6 = getelementptr double* %d, i64 %indvar
%t7 = load double* %t6
%t8 = fmul double %t7, 4.5
store double %t8, double* %t6
%indvar.next = add i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 10
br i1 %exitcond, label %return, label %loop
return:
ret void
}
define void @count_down(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop:
%indvar = phi i64 [ 10, %entry ], [ %indvar.next, %loop ]
%indvar.i8 = and i64 %indvar, 255
%t0 = getelementptr double* %d, i64 %indvar.i8
%t1 = load double* %t0
%t2 = fmul double %t1, 0.1
store double %t2, double* %t0
%indvar.i24 = and i64 %indvar, 16777215
%t3 = getelementptr double* %d, i64 %indvar.i24
%t4 = load double* %t3
%t5 = fmul double %t4, 2.3
store double %t5, double* %t3
%t6 = getelementptr double* %d, i64 %indvar
%t7 = load double* %t6
%t8 = fmul double %t7, 4.5
store double %t8, double* %t6
%indvar.next = sub i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 0
br i1 %exitcond, label %return, label %loop
return:
ret void
}
define void @count_up_signed(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop:
%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %loop ]
%s0 = shl i64 %indvar, 8
%indvar.i8 = ashr i64 %s0, 8
%t0 = getelementptr double* %d, i64 %indvar.i8
%t1 = load double* %t0
%t2 = fmul double %t1, 0.1
store double %t2, double* %t0
%s1 = shl i64 %indvar, 24
%indvar.i24 = ashr i64 %s1, 24
%t3 = getelementptr double* %d, i64 %indvar.i24
%t4 = load double* %t3
%t5 = fmul double %t4, 2.3
store double %t5, double* %t3
%t6 = getelementptr double* %d, i64 %indvar
%t7 = load double* %t6
%t8 = fmul double %t7, 4.5
store double %t8, double* %t6
%indvar.next = add i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 10
br i1 %exitcond, label %return, label %loop
return:
ret void
}
define void @count_down_signed(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop:
%indvar = phi i64 [ 10, %entry ], [ %indvar.next, %loop ]
%s0 = shl i64 %indvar, 8
%indvar.i8 = ashr i64 %s0, 8
%t0 = getelementptr double* %d, i64 %indvar.i8
%t1 = load double* %t0
%t2 = fmul double %t1, 0.1
store double %t2, double* %t0
%s1 = shl i64 %indvar, 24
%indvar.i24 = ashr i64 %s1, 24
%t3 = getelementptr double* %d, i64 %indvar.i24
%t4 = load double* %t3
%t5 = fmul double %t4, 2.3
store double %t5, double* %t3
%t6 = getelementptr double* %d, i64 %indvar
%t7 = load double* %t6
%t8 = fmul double %t7, 4.5
store double %t8, double* %t6
%indvar.next = sub i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 0
br i1 %exitcond, label %return, label %loop
return:
ret void
}
define void @another_count_up(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop:
%indvar = phi i64 [ 18446744073709551615, %entry ], [ %indvar.next, %loop ]
%indvar.i8 = and i64 %indvar, 255
%t0 = getelementptr double* %d, i64 %indvar.i8
%t1 = load double* %t0
%t2 = fmul double %t1, 0.1
store double %t2, double* %t0
%indvar.i24 = and i64 %indvar, 16777215
%t3 = getelementptr double* %d, i64 %indvar.i24
%t4 = load double* %t3
%t5 = fmul double %t4, 2.3
store double %t5, double* %t3
%t6 = getelementptr double* %d, i64 %indvar
%t7 = load double* %t6
%t8 = fmul double %t7, 4.5
store double %t8, double* %t6
%indvar.next = add i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 0
br i1 %exitcond, label %return, label %loop
return:
ret void
}
define void @another_count_down(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop:
%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %loop ]
%indvar.i8 = and i64 %indvar, 255
%t0 = getelementptr double* %d, i64 %indvar.i8
%t1 = load double* %t0
%t2 = fmul double %t1, 0.1
store double %t2, double* %t0
%indvar.i24 = and i64 %indvar, 16777215
%t3 = getelementptr double* %d, i64 %indvar.i24
%t4 = load double* %t3
%t5 = fdiv double %t4, 2.3
store double %t5, double* %t3
%t6 = getelementptr double* %d, i64 %indvar
%t7 = load double* %t6
%t8 = fmul double %t7, 4.5
store double %t8, double* %t6
%indvar.next = sub i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 18446744073709551615
br i1 %exitcond, label %return, label %loop
return:
ret void
}
define void @another_count_up_signed(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop:
%indvar = phi i64 [ 18446744073709551615, %entry ], [ %indvar.next, %loop ]
%s0 = shl i64 %indvar, 8
%indvar.i8 = ashr i64 %s0, 8
%t0 = getelementptr double* %d, i64 %indvar.i8
%t1 = load double* %t0
%t2 = fmul double %t1, 0.1
store double %t2, double* %t0
%s1 = shl i64 %indvar, 24
%indvar.i24 = ashr i64 %s1, 24
%t3 = getelementptr double* %d, i64 %indvar.i24
%t4 = load double* %t3
%t5 = fdiv double %t4, 2.3
store double %t5, double* %t3
%t6 = getelementptr double* %d, i64 %indvar
%t7 = load double* %t6
%t8 = fmul double %t7, 4.5
store double %t8, double* %t6
%indvar.next = add i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 0
br i1 %exitcond, label %return, label %loop
return:
ret void
}
define void @another_count_down_signed(double* %d, i64 %n) nounwind {
entry:
br label %loop
loop:
%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %loop ]
%s0 = shl i64 %indvar, 8
%indvar.i8 = ashr i64 %s0, 8
%t0 = getelementptr double* %d, i64 %indvar.i8
%t1 = load double* %t0
%t2 = fmul double %t1, 0.1
store double %t2, double* %t0
%s1 = shl i64 %indvar, 24
%indvar.i24 = ashr i64 %s1, 24
%t3 = getelementptr double* %d, i64 %indvar.i24
%t4 = load double* %t3
%t5 = fdiv double %t4, 2.3
store double %t5, double* %t3
%t6 = getelementptr double* %d, i64 %indvar
%t7 = load double* %t6
%t8 = fmul double %t7, 4.5
store double %t8, double* %t6
%indvar.next = sub i64 %indvar, 1
%exitcond = icmp eq i64 %indvar.next, 18446744073709551615
br i1 %exitcond, label %return, label %loop
return:
ret void
}
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