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llvm-project/llvm/test/CodeGen/Hexagon/reg-scavengebug-3.ll

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[Hexagon] Optimize stack slot spills Replace spills to memory with spills to registers, if possible. This applies mostly to predicate registers (both scalar and vector), since they are very limited in number. A spill of a predicate register may happen even if there is a general-purpose register available. In cases like this the stack spill/reload may be eliminated completely. This optimization will consider all stack objects, regardless of where they came from and try to match the live range of the stack slot with a dead range of a register from an appropriate register class. llvm-svn: 260758
2016-02-13 06:53:35 +08:00
; RUN: llc -O0 -march=hexagon -mcpu=hexagonv60 < %s | FileCheck %s
; CHECK: vmem
target triple = "hexagon"
@vecpreds = external global [15 x <16 x i32>], align 64
@vectors = external global [15 x <16 x i32>], align 64
@vector_pairs = external global [15 x <32 x i32>], align 128
@.str1 = external hidden unnamed_addr constant [20 x i8], align 1
@.str2 = external hidden unnamed_addr constant [43 x i8], align 1
@Q6VecPredResult = external global <16 x i32>, align 64
@.str52 = external hidden unnamed_addr constant [57 x i8], align 1
@.str54 = external hidden unnamed_addr constant [59 x i8], align 1
@VectorResult = external global <16 x i32>, align 64
@.str243 = external hidden unnamed_addr constant [60 x i8], align 1
@.str251 = external hidden unnamed_addr constant [77 x i8], align 1
@.str290 = external hidden unnamed_addr constant [65 x i8], align 1
@VectorPairResult = external global <32 x i32>, align 128
; Function Attrs: nounwind
declare void @print_vector(i32, i8*) #0
; Function Attrs: nounwind
declare i32 @printf(i8*, ...) #0
; Function Attrs: nounwind
declare void @print_vecpred(i32, i8*) #0
; Function Attrs: nounwind readnone
declare <16 x i32> @llvm.hexagon.V6.vandqrt(<512 x i1>, i32) #1
; Function Attrs: nounwind
declare void @init_vectors() #0
; Function Attrs: nounwind readnone
declare <512 x i1> @llvm.hexagon.V6.vandvrt(<16 x i32>, i32) #1
; Function Attrs: nounwind readnone
declare <16 x i32> @llvm.hexagon.V6.lvsplatw(i32) #1
; Function Attrs: nounwind
declare void @init_addresses() #0
; Function Attrs: nounwind
declare <16 x i32> @llvm.hexagon.V6.vsubhnq(<512 x i1>, <16 x i32>, <16 x i32>) #1
; Function Attrs: nounwind
define i32 @main() #0 {
entry:
%0 = load <16 x i32>, <16 x i32>* getelementptr inbounds ([15 x <16 x i32>], [15 x <16 x i32>]* @vecpreds, i32 0, i32 0), align 64
%1 = load <16 x i32>, <16 x i32>* getelementptr inbounds ([15 x <16 x i32>], [15 x <16 x i32>]* @vectors, i32 0, i32 1), align 64
call void @print_vecpred(i32 64, i8* bitcast (<16 x i32>* @Q6VecPredResult to i8*))
%2 = load <16 x i32>, <16 x i32>* getelementptr inbounds ([15 x <16 x i32>], [15 x <16 x i32>]* @vectors, i32 0, i32 1), align 64
%call50 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([57 x i8], [57 x i8]* @.str52, i32 0, i32 0)) #3
%3 = load <16 x i32>, <16 x i32>* getelementptr inbounds ([15 x <16 x i32>], [15 x <16 x i32>]* @vectors, i32 0, i32 1), align 64
%call52 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([59 x i8], [59 x i8]* @.str54, i32 0, i32 0)) #3
%4 = load <16 x i32>, <16 x i32>* getelementptr inbounds ([15 x <16 x i32>], [15 x <16 x i32>]* @vectors, i32 0, i32 1), align 64
%call300 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([65 x i8], [65 x i8]* @.str290, i32 0, i32 0)) #3
%5 = load <16 x i32>, <16 x i32>* getelementptr inbounds ([15 x <16 x i32>], [15 x <16 x i32>]* @vectors, i32 0, i32 0), align 64
%6 = load <16 x i32>, <16 x i32>* getelementptr inbounds ([15 x <16 x i32>], [15 x <16 x i32>]* @vectors, i32 0, i32 1), align 64
%call1373 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str1, i32 0, i32 0), i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str2, i32 0, i32 0), i8* getelementptr inbounds ([60 x i8], [60 x i8]* @.str243, i32 0, i32 0)) #3
%7 = call <16 x i32> @llvm.hexagon.V6.lvsplatw(i32 1)
%call1381 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str1, i32 0, i32 0), i8* getelementptr inbounds ([43 x i8], [43 x i8]* @.str2, i32 0, i32 0), i8* getelementptr inbounds ([77 x i8], [77 x i8]* @.str251, i32 0, i32 0)) #3
%8 = call <16 x i32> @llvm.hexagon.V6.lvsplatw(i32 1)
%9 = call <512 x i1> @llvm.hexagon.V6.vandvrt(<16 x i32> %8, i32 16843009)
call void @print_vector(i32 64, i8* bitcast (<16 x i32>* @VectorResult to i8*))
%10 = call <16 x i32> @llvm.hexagon.V6.lvsplatw(i32 1)
%11 = call <512 x i1> @llvm.hexagon.V6.vandvrt(<16 x i32> %10, i32 16843009)
%12 = bitcast <512 x i1> %11 to <16 x i32>
%13 = bitcast <16 x i32> %12 to <512 x i1>
%14 = call <16 x i32> @llvm.hexagon.V6.vsubhnq(<512 x i1> %13, <16 x i32> undef, <16 x i32> undef)
store <16 x i32> %14, <16 x i32>* @VectorResult, align 64
ret i32 0
}
attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { nounwind readnone }
attributes #2 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #3 = { nounwind }