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llvm-6502/test/Transforms/SLPVectorizer/X86/addsub.ll
Sanjay Patel b89304eb7c Preserve IR flags (nsw, nuw, exact, fast-math) in SLP vectorizer (PR20802). 
The SLP vectorizer should propagate IR-level optimization hints/flags (nsw, nuw, exact, fast-math)
when converting scalar instructions into vectors. But this isn't a simple copy - we need to take
the intersection (the logical 'and') of the sets of flags on the scalars.

The solution is further complicated because we can have non-uniform (non-SIMD) vector ops after:
http://reviews.llvm.org/D4015
http://llvm.org/viewvc/llvm-project?view=revision&revision=211339

The vast majority of changed files are existing tests that were not propagating IR flags, but I've
also added a new test file for focused testing of IR flag possibilities.

Differential Revision: http://reviews.llvm.org/D5172



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217051 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-03 17:40:30 +00:00

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; RUN: opt < %s -basicaa -slp-vectorizer -S | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@b = common global [4 x i32] zeroinitializer, align 16
@c = common global [4 x i32] zeroinitializer, align 16
@d = common global [4 x i32] zeroinitializer, align 16
@e = common global [4 x i32] zeroinitializer, align 16
@a = common global [4 x i32] zeroinitializer, align 16
@fb = common global [4 x float] zeroinitializer, align 16
@fc = common global [4 x float] zeroinitializer, align 16
@fa = common global [4 x float] zeroinitializer, align 16
; CHECK-LABEL: @addsub
; CHECK: %5 = add nsw <4 x i32> %3, %4
; CHECK: %6 = add nsw <4 x i32> %2, %5
; CHECK: %7 = sub nsw <4 x i32> %2, %5
; CHECK: %8 = shufflevector <4 x i32> %6, <4 x i32> %7, <4 x i32> <i32 0, i32 5, i32 2, i32 7>
; Function Attrs: nounwind uwtable
define void @addsub() #0 {
entry:
%0 = load i32* getelementptr inbounds ([4 x i32]* @b, i32 0, i64 0), align 4
%1 = load i32* getelementptr inbounds ([4 x i32]* @c, i32 0, i64 0), align 4
%add = add nsw i32 %0, %1
%2 = load i32* getelementptr inbounds ([4 x i32]* @d, i32 0, i64 0), align 4
%3 = load i32* getelementptr inbounds ([4 x i32]* @e, i32 0, i64 0), align 4
%add1 = add nsw i32 %2, %3
%add2 = add nsw i32 %add, %add1
store i32 %add2, i32* getelementptr inbounds ([4 x i32]* @a, i32 0, i64 0), align 4
%4 = load i32* getelementptr inbounds ([4 x i32]* @b, i32 0, i64 1), align 4
%5 = load i32* getelementptr inbounds ([4 x i32]* @c, i32 0, i64 1), align 4
%add3 = add nsw i32 %4, %5
%6 = load i32* getelementptr inbounds ([4 x i32]* @d, i32 0, i64 1), align 4
%7 = load i32* getelementptr inbounds ([4 x i32]* @e, i32 0, i64 1), align 4
%add4 = add nsw i32 %6, %7
%sub = sub nsw i32 %add3, %add4
store i32 %sub, i32* getelementptr inbounds ([4 x i32]* @a, i32 0, i64 1), align 4
%8 = load i32* getelementptr inbounds ([4 x i32]* @b, i32 0, i64 2), align 4
%9 = load i32* getelementptr inbounds ([4 x i32]* @c, i32 0, i64 2), align 4
%add5 = add nsw i32 %8, %9
%10 = load i32* getelementptr inbounds ([4 x i32]* @d, i32 0, i64 2), align 4
%11 = load i32* getelementptr inbounds ([4 x i32]* @e, i32 0, i64 2), align 4
%add6 = add nsw i32 %10, %11
%add7 = add nsw i32 %add5, %add6
store i32 %add7, i32* getelementptr inbounds ([4 x i32]* @a, i32 0, i64 2), align 4
%12 = load i32* getelementptr inbounds ([4 x i32]* @b, i32 0, i64 3), align 4
%13 = load i32* getelementptr inbounds ([4 x i32]* @c, i32 0, i64 3), align 4
%add8 = add nsw i32 %12, %13
%14 = load i32* getelementptr inbounds ([4 x i32]* @d, i32 0, i64 3), align 4
%15 = load i32* getelementptr inbounds ([4 x i32]* @e, i32 0, i64 3), align 4
%add9 = add nsw i32 %14, %15
%sub10 = sub nsw i32 %add8, %add9
store i32 %sub10, i32* getelementptr inbounds ([4 x i32]* @a, i32 0, i64 3), align 4
ret void
}
; CHECK-LABEL: @subadd
; CHECK: %5 = add nsw <4 x i32> %3, %4
; CHECK: %6 = sub nsw <4 x i32> %2, %5
; CHECK: %7 = add nsw <4 x i32> %2, %5
; CHECK: %8 = shufflevector <4 x i32> %6, <4 x i32> %7, <4 x i32> <i32 0, i32 5, i32 2, i32 7>
; Function Attrs: nounwind uwtable
define void @subadd() #0 {
entry:
%0 = load i32* getelementptr inbounds ([4 x i32]* @b, i32 0, i64 0), align 4
%1 = load i32* getelementptr inbounds ([4 x i32]* @c, i32 0, i64 0), align 4
%add = add nsw i32 %0, %1
%2 = load i32* getelementptr inbounds ([4 x i32]* @d, i32 0, i64 0), align 4
%3 = load i32* getelementptr inbounds ([4 x i32]* @e, i32 0, i64 0), align 4
%add1 = add nsw i32 %2, %3
%sub = sub nsw i32 %add, %add1
store i32 %sub, i32* getelementptr inbounds ([4 x i32]* @a, i32 0, i64 0), align 4
%4 = load i32* getelementptr inbounds ([4 x i32]* @b, i32 0, i64 1), align 4
%5 = load i32* getelementptr inbounds ([4 x i32]* @c, i32 0, i64 1), align 4
%add2 = add nsw i32 %4, %5
%6 = load i32* getelementptr inbounds ([4 x i32]* @d, i32 0, i64 1), align 4
%7 = load i32* getelementptr inbounds ([4 x i32]* @e, i32 0, i64 1), align 4
%add3 = add nsw i32 %6, %7
%add4 = add nsw i32 %add2, %add3
store i32 %add4, i32* getelementptr inbounds ([4 x i32]* @a, i32 0, i64 1), align 4
%8 = load i32* getelementptr inbounds ([4 x i32]* @b, i32 0, i64 2), align 4
%9 = load i32* getelementptr inbounds ([4 x i32]* @c, i32 0, i64 2), align 4
%add5 = add nsw i32 %8, %9
%10 = load i32* getelementptr inbounds ([4 x i32]* @d, i32 0, i64 2), align 4
%11 = load i32* getelementptr inbounds ([4 x i32]* @e, i32 0, i64 2), align 4
%add6 = add nsw i32 %10, %11
%sub7 = sub nsw i32 %add5, %add6
store i32 %sub7, i32* getelementptr inbounds ([4 x i32]* @a, i32 0, i64 2), align 4
%12 = load i32* getelementptr inbounds ([4 x i32]* @b, i32 0, i64 3), align 4
%13 = load i32* getelementptr inbounds ([4 x i32]* @c, i32 0, i64 3), align 4
%add8 = add nsw i32 %12, %13
%14 = load i32* getelementptr inbounds ([4 x i32]* @d, i32 0, i64 3), align 4
%15 = load i32* getelementptr inbounds ([4 x i32]* @e, i32 0, i64 3), align 4
%add9 = add nsw i32 %14, %15
%add10 = add nsw i32 %add8, %add9
store i32 %add10, i32* getelementptr inbounds ([4 x i32]* @a, i32 0, i64 3), align 4
ret void
}
; CHECK-LABEL: @faddfsub
; CHECK: %2 = fadd <4 x float> %0, %1
; CHECK: %3 = fsub <4 x float> %0, %1
; CHECK: %4 = shufflevector <4 x float> %2, <4 x float> %3, <4 x i32> <i32 0, i32 5, i32 2, i32 7>
; Function Attrs: nounwind uwtable
define void @faddfsub() #0 {
entry:
%0 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 0), align 4
%1 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 0), align 4
%add = fadd float %0, %1
store float %add, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 0), align 4
%2 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 1), align 4
%3 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 1), align 4
%sub = fsub float %2, %3
store float %sub, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 1), align 4
%4 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 2), align 4
%5 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 2), align 4
%add1 = fadd float %4, %5
store float %add1, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 2), align 4
%6 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 3), align 4
%7 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 3), align 4
%sub2 = fsub float %6, %7
store float %sub2, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 3), align 4
ret void
}
; CHECK-LABEL: @fsubfadd
; CHECK: %2 = fsub <4 x float> %0, %1
; CHECK: %3 = fadd <4 x float> %0, %1
; CHECK: %4 = shufflevector <4 x float> %2, <4 x float> %3, <4 x i32> <i32 0, i32 5, i32 2, i32 7>
; Function Attrs: nounwind uwtable
define void @fsubfadd() #0 {
entry:
%0 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 0), align 4
%1 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 0), align 4
%sub = fsub float %0, %1
store float %sub, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 0), align 4
%2 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 1), align 4
%3 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 1), align 4
%add = fadd float %2, %3
store float %add, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 1), align 4
%4 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 2), align 4
%5 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 2), align 4
%sub1 = fsub float %4, %5
store float %sub1, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 2), align 4
%6 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 3), align 4
%7 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 3), align 4
%add2 = fadd float %6, %7
store float %add2, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 3), align 4
ret void
}
; CHECK-LABEL: @No_faddfsub
; CHECK-NOT: fadd <4 x float>
; CHECK-NOT: fsub <4 x float>
; CHECK-NOT: shufflevector
; Function Attrs: nounwind uwtable
define void @No_faddfsub() #0 {
entry:
%0 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 0), align 4
%1 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 0), align 4
%add = fadd float %0, %1
store float %add, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 0), align 4
%2 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 1), align 4
%3 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 1), align 4
%add1 = fadd float %2, %3
store float %add1, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 1), align 4
%4 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 2), align 4
%5 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 2), align 4
%add2 = fadd float %4, %5
store float %add2, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 2), align 4
%6 = load float* getelementptr inbounds ([4 x float]* @fb, i32 0, i64 3), align 4
%7 = load float* getelementptr inbounds ([4 x float]* @fc, i32 0, i64 3), align 4
%sub = fsub float %6, %7
store float %sub, float* getelementptr inbounds ([4 x float]* @fa, i32 0, i64 3), align 4
ret void
}
attributes #0 = { nounwind }
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