67 lines
2.4 KiB
LLVM
67 lines
2.4 KiB
LLVM
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; RUN: opt < %s -loop-vectorize -mattr=+sse4.2 -debug-only=loop-vectorize 2>&1 -S | FileCheck %s
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; REQUIRES: asserts
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; Make sure we use the right select kind when querying select costs.
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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@a = common global [2048 x i32] zeroinitializer, align 16
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@b = common global [2048 x i32] zeroinitializer, align 16
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@c = common global [2048 x i32] zeroinitializer, align 16
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; CHECK: Checking a loop in "scalarselect"
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define void @scalarselect(i1 %cond) {
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br label %1
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; <label>:1
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%indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %1 ]
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%2 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, i64 %indvars.iv
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%3 = load i32, i32* %2, align 4
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%4 = getelementptr inbounds [2048 x i32], [2048 x i32]* @c, i64 0, i64 %indvars.iv
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%5 = load i32, i32* %4, align 4
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%6 = add nsw i32 %5, %3
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%7 = getelementptr inbounds [2048 x i32], [2048 x i32]* @a, i64 0, i64 %indvars.iv
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; A scalar select has a cost of 1 on core2
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; CHECK: cost of 1 for VF 2 {{.*}} select i1 %cond, i32 %6, i32 0
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%sel = select i1 %cond, i32 %6, i32 zeroinitializer
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store i32 %sel, i32* %7, align 4
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, 256
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br i1 %exitcond, label %8, label %1
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; <label>:8
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ret void
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}
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; CHECK: Checking a loop in "vectorselect"
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define void @vectorselect(i1 %cond) {
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br label %1
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; <label>:1
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%indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %1 ]
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%2 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, i64 %indvars.iv
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%3 = load i32, i32* %2, align 4
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%4 = getelementptr inbounds [2048 x i32], [2048 x i32]* @c, i64 0, i64 %indvars.iv
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%5 = load i32, i32* %4, align 4
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%6 = add nsw i32 %5, %3
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%7 = getelementptr inbounds [2048 x i32], [2048 x i32]* @a, i64 0, i64 %indvars.iv
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%8 = icmp ult i64 %indvars.iv, 8
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; A vector select has a cost of 1 on core2
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; CHECK: cost of 1 for VF 2 {{.*}} select i1 %8, i32 %6, i32 0
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%sel = select i1 %8, i32 %6, i32 zeroinitializer
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store i32 %sel, i32* %7, align 4
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%indvars.iv.next = add i64 %indvars.iv, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next to i32
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%exitcond = icmp eq i32 %lftr.wideiv, 256
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br i1 %exitcond, label %9, label %1
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; <label>:9
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ret void
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}
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