mirror of
https://github.com/c64scene-ar/llvm-6502.git
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55cfb52aa3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191853 91177308-0d34-0410-b5e6-96231b3b80d8
149 lines
4.9 KiB
LLVM
149 lines
4.9 KiB
LLVM
; RUN: opt < %s -loop-vectorize -force-vector-unroll=2 -force-vector-width=4 -S | FileCheck %s
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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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; Make sure consecutive vector generates correct negative indices.
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; PR15882
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; CHECK-LABEL: @reverse_induction_i64(
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; CHECK: add <4 x i64> %[[SPLAT:.*]], <i64 0, i64 -1, i64 -2, i64 -3>
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; CHECK: add <4 x i64> %[[SPLAT]], <i64 -4, i64 -5, i64 -6, i64 -7>
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define i32 @reverse_induction_i64(i64 %startval, i32 * %ptr) {
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entry:
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br label %for.body
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for.body:
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%add.i7 = phi i64 [ %startval, %entry ], [ %add.i, %for.body ]
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%i.06 = phi i32 [ 0, %entry ], [ %inc4, %for.body ]
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%redux5 = phi i32 [ 0, %entry ], [ %inc.redux, %for.body ]
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%add.i = add i64 %add.i7, -1
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%kind_.i = getelementptr inbounds i32* %ptr, i64 %add.i
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%tmp.i1 = load i32* %kind_.i, align 4
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%inc.redux = add i32 %tmp.i1, %redux5
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%inc4 = add i32 %i.06, 1
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%exitcond = icmp ne i32 %inc4, 1024
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br i1 %exitcond, label %for.body, label %loopend
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loopend:
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ret i32 %inc.redux
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}
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; CHECK-LABEL: @reverse_induction_i128(
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; CHECK: add <4 x i128> %[[SPLAT:.*]], <i128 0, i128 -1, i128 -2, i128 -3>
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; CHECK: add <4 x i128> %[[SPLAT]], <i128 -4, i128 -5, i128 -6, i128 -7>
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define i32 @reverse_induction_i128(i128 %startval, i32 * %ptr) {
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entry:
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br label %for.body
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for.body:
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%add.i7 = phi i128 [ %startval, %entry ], [ %add.i, %for.body ]
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%i.06 = phi i32 [ 0, %entry ], [ %inc4, %for.body ]
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%redux5 = phi i32 [ 0, %entry ], [ %inc.redux, %for.body ]
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%add.i = add i128 %add.i7, -1
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%kind_.i = getelementptr inbounds i32* %ptr, i128 %add.i
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%tmp.i1 = load i32* %kind_.i, align 4
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%inc.redux = add i32 %tmp.i1, %redux5
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%inc4 = add i32 %i.06, 1
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%exitcond = icmp ne i32 %inc4, 1024
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br i1 %exitcond, label %for.body, label %loopend
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loopend:
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ret i32 %inc.redux
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}
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; CHECK-LABEL: @reverse_induction_i16(
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; CHECK: add <4 x i16> %[[SPLAT:.*]], <i16 0, i16 -1, i16 -2, i16 -3>
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; CHECK: add <4 x i16> %[[SPLAT]], <i16 -4, i16 -5, i16 -6, i16 -7>
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define i32 @reverse_induction_i16(i16 %startval, i32 * %ptr) {
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entry:
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br label %for.body
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for.body:
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%add.i7 = phi i16 [ %startval, %entry ], [ %add.i, %for.body ]
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%i.06 = phi i32 [ 0, %entry ], [ %inc4, %for.body ]
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%redux5 = phi i32 [ 0, %entry ], [ %inc.redux, %for.body ]
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%add.i = add i16 %add.i7, -1
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%kind_.i = getelementptr inbounds i32* %ptr, i16 %add.i
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%tmp.i1 = load i32* %kind_.i, align 4
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%inc.redux = add i32 %tmp.i1, %redux5
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%inc4 = add i32 %i.06, 1
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%exitcond = icmp ne i32 %inc4, 1024
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br i1 %exitcond, label %for.body, label %loopend
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loopend:
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ret i32 %inc.redux
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}
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@a = common global [1024 x i32] zeroinitializer, align 16
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; We incorrectly transformed this loop into an empty one because we left the
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; induction variable in i8 type and truncated the exit value 1024 to 0.
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; int a[1024];
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;
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; void fail() {
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; int reverse_induction = 1023;
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; unsigned char forward_induction = 0;
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; while ((reverse_induction) >= 0) {
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; forward_induction++;
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; a[reverse_induction] = forward_induction;
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; --reverse_induction;
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; }
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; }
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; CHECK-LABEL: @reverse_forward_induction_i64_i8(
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; CHECK: vector.body
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; CHECK: %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %normalized.idx = sub i64 %index, 0
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; CHECK: %reverse.idx = sub i64 1023, %normalized.idx
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; CHECK: trunc i64 %index to i8
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define void @reverse_forward_induction_i64_i8() {
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entry:
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br label %while.body
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while.body:
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%indvars.iv = phi i64 [ 1023, %entry ], [ %indvars.iv.next, %while.body ]
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%forward_induction.05 = phi i8 [ 0, %entry ], [ %inc, %while.body ]
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%inc = add i8 %forward_induction.05, 1
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%conv = zext i8 %inc to i32
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%arrayidx = getelementptr inbounds [1024 x i32]* @a, i64 0, i64 %indvars.iv
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store i32 %conv, i32* %arrayidx, align 4
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%indvars.iv.next = add i64 %indvars.iv, -1
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%0 = trunc i64 %indvars.iv to i32
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%cmp = icmp sgt i32 %0, 0
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br i1 %cmp, label %while.body, label %while.end
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while.end:
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ret void
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}
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; CHECK-LABEL: @reverse_forward_induction_i64_i8_signed(
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; CHECK: vector.body:
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; CHECK: %index = phi i64 [ 129, %vector.ph ], [ %index.next, %vector.body ]
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; CHECK: %normalized.idx = sub i64 %index, 129
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; CHECK: %reverse.idx = sub i64 1023, %normalized.idx
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; CHECK: trunc i64 %index to i8
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define void @reverse_forward_induction_i64_i8_signed() {
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entry:
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br label %while.body
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while.body:
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%indvars.iv = phi i64 [ 1023, %entry ], [ %indvars.iv.next, %while.body ]
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%forward_induction.05 = phi i8 [ -127, %entry ], [ %inc, %while.body ]
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%inc = add i8 %forward_induction.05, 1
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%conv = sext i8 %inc to i32
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%arrayidx = getelementptr inbounds [1024 x i32]* @a, i64 0, i64 %indvars.iv
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store i32 %conv, i32* %arrayidx, align 4
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%indvars.iv.next = add i64 %indvars.iv, -1
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%0 = trunc i64 %indvars.iv to i32
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%cmp = icmp sgt i32 %0, 0
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br i1 %cmp, label %while.body, label %while.end
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while.end:
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ret void
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}
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