llvm-6502/test/Transforms/LoopVectorize/intrinsic.ll
Arnold Schwaighofer 4e7b015a4a Revert "LoopVectorizer: Only allow vectorization of intrinsics."
Revert 191122 - with extra checks we are allowed to vectorize math library
function calls.

Standard library indentifiers are reserved names so functions with external
linkage must not overrided them. However, functions with internal linkage can.

Therefore, we can vectorize calls to math library functions with a check for
external linkage and matching signature. This matches what we do during
SelectionDAG building.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191206 91177308-0d34-0410-b5e6-96231b3b80d8
2013-09-23 14:54:39 +00:00

1093 lines
42 KiB
LLVM

; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s
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"
target triple = "x86_64-unknown-linux-gnu"
;CHECK-LABEL: @sqrt_f32(
;CHECK: llvm.sqrt.v4f32
;CHECK: ret void
define void @sqrt_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.sqrt.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.sqrt.f32(float) nounwind readnone
;CHECK-LABEL: @sqrt_f64(
;CHECK: llvm.sqrt.v4f64
;CHECK: ret void
define void @sqrt_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.sqrt.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.sqrt.f64(double) nounwind readnone
;CHECK-LABEL: @sin_f32(
;CHECK: llvm.sin.v4f32
;CHECK: ret void
define void @sin_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.sin.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.sin.f32(float) nounwind readnone
;CHECK-LABEL: @sin_f64(
;CHECK: llvm.sin.v4f64
;CHECK: ret void
define void @sin_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.sin.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.sin.f64(double) nounwind readnone
;CHECK-LABEL: @cos_f32(
;CHECK: llvm.cos.v4f32
;CHECK: ret void
define void @cos_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.cos.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.cos.f32(float) nounwind readnone
;CHECK-LABEL: @cos_f64(
;CHECK: llvm.cos.v4f64
;CHECK: ret void
define void @cos_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.cos.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.cos.f64(double) nounwind readnone
;CHECK-LABEL: @exp_f32(
;CHECK: llvm.exp.v4f32
;CHECK: ret void
define void @exp_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.exp.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.exp.f32(float) nounwind readnone
;CHECK-LABEL: @exp_f64(
;CHECK: llvm.exp.v4f64
;CHECK: ret void
define void @exp_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.exp.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.exp.f64(double) nounwind readnone
;CHECK-LABEL: @exp2_f32(
;CHECK: llvm.exp2.v4f32
;CHECK: ret void
define void @exp2_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.exp2.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.exp2.f32(float) nounwind readnone
;CHECK-LABEL: @exp2_f64(
;CHECK: llvm.exp2.v4f64
;CHECK: ret void
define void @exp2_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.exp2.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.exp2.f64(double) nounwind readnone
;CHECK-LABEL: @log_f32(
;CHECK: llvm.log.v4f32
;CHECK: ret void
define void @log_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.log.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.log.f32(float) nounwind readnone
;CHECK-LABEL: @log_f64(
;CHECK: llvm.log.v4f64
;CHECK: ret void
define void @log_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.log.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.log.f64(double) nounwind readnone
;CHECK-LABEL: @log10_f32(
;CHECK: llvm.log10.v4f32
;CHECK: ret void
define void @log10_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.log10.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.log10.f32(float) nounwind readnone
;CHECK-LABEL: @log10_f64(
;CHECK: llvm.log10.v4f64
;CHECK: ret void
define void @log10_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.log10.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.log10.f64(double) nounwind readnone
;CHECK-LABEL: @log2_f32(
;CHECK: llvm.log2.v4f32
;CHECK: ret void
define void @log2_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.log2.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.log2.f32(float) nounwind readnone
;CHECK-LABEL: @log2_f64(
;CHECK: llvm.log2.v4f64
;CHECK: ret void
define void @log2_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.log2.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.log2.f64(double) nounwind readnone
;CHECK-LABEL: @fabs_f32(
;CHECK: llvm.fabs.v4f32
;CHECK: ret void
define void @fabs_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.fabs.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.fabs.f32(float) nounwind readnone
define void @fabs_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.fabs(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.fabs(double) nounwind readnone
;CHECK-LABEL: @copysign_f32(
;CHECK: llvm.copysign.v4f32
;CHECK: ret void
define void @copysign_f32(i32 %n, float* noalias %y, float* noalias %x, float* noalias %z) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%arrayidx1 = getelementptr inbounds float* %z, i64 %indvars.iv
%1 = load float* %arrayidx1, align 4
%call = tail call float @llvm.copysign.f32(float %0, float %1) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.copysign.f32(float, float) nounwind readnone
define void @copysign_f64(i32 %n, double* noalias %y, double* noalias %x, double* noalias %z) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%arrayidx1 = getelementptr inbounds double* %z, i64 %indvars.iv
%1 = load double* %arrayidx, align 8
%call = tail call double @llvm.copysign(double %0, double %1) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.copysign(double, double) nounwind readnone
;CHECK-LABEL: @floor_f32(
;CHECK: llvm.floor.v4f32
;CHECK: ret void
define void @floor_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.floor.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.floor.f32(float) nounwind readnone
;CHECK-LABEL: @floor_f64(
;CHECK: llvm.floor.v4f64
;CHECK: ret void
define void @floor_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.floor.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.floor.f64(double) nounwind readnone
;CHECK-LABEL: @ceil_f32(
;CHECK: llvm.ceil.v4f32
;CHECK: ret void
define void @ceil_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.ceil.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.ceil.f32(float) nounwind readnone
;CHECK-LABEL: @ceil_f64(
;CHECK: llvm.ceil.v4f64
;CHECK: ret void
define void @ceil_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.ceil.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.ceil.f64(double) nounwind readnone
;CHECK-LABEL: @trunc_f32(
;CHECK: llvm.trunc.v4f32
;CHECK: ret void
define void @trunc_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.trunc.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.trunc.f32(float) nounwind readnone
;CHECK-LABEL: @trunc_f64(
;CHECK: llvm.trunc.v4f64
;CHECK: ret void
define void @trunc_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.trunc.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.trunc.f64(double) nounwind readnone
;CHECK-LABEL: @rint_f32(
;CHECK: llvm.rint.v4f32
;CHECK: ret void
define void @rint_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.rint.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.rint.f32(float) nounwind readnone
;CHECK-LABEL: @rint_f64(
;CHECK: llvm.rint.v4f64
;CHECK: ret void
define void @rint_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.rint.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.rint.f64(double) nounwind readnone
;CHECK-LABEL: @nearbyint_f32(
;CHECK: llvm.nearbyint.v4f32
;CHECK: ret void
define void @nearbyint_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.nearbyint.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.nearbyint.f32(float) nounwind readnone
;CHECK-LABEL: @nearbyint_f64(
;CHECK: llvm.nearbyint.v4f64
;CHECK: ret void
define void @nearbyint_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.nearbyint.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.nearbyint.f64(double) nounwind readnone
;CHECK-LABEL: @round_f32(
;CHECK: llvm.round.v4f32
;CHECK: ret void
define void @round_f32(i32 %n, float* noalias %y, float* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @llvm.round.f32(float %0) nounwind readnone
%arrayidx2 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx2, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.round.f32(float) nounwind readnone
;CHECK-LABEL: @round_f64(
;CHECK: llvm.round.v4f64
;CHECK: ret void
define void @round_f64(i32 %n, double* noalias %y, double* noalias %x) nounwind uwtable {
entry:
%cmp6 = icmp sgt i32 %n, 0
br i1 %cmp6, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%call = tail call double @llvm.round.f64(double %0) nounwind readnone
%arrayidx2 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx2, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.round.f64(double) nounwind readnone
;CHECK-LABEL: @fma_f32(
;CHECK: llvm.fma.v4f32
;CHECK: ret void
define void @fma_f32(i32 %n, float* noalias %y, float* noalias %x, float* noalias %z, float* noalias %w) nounwind uwtable {
entry:
%cmp12 = icmp sgt i32 %n, 0
br i1 %cmp12, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float* %w, i64 %indvars.iv
%1 = load float* %arrayidx2, align 4
%arrayidx4 = getelementptr inbounds float* %z, i64 %indvars.iv
%2 = load float* %arrayidx4, align 4
%3 = tail call float @llvm.fma.f32(float %0, float %2, float %1)
%arrayidx6 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %3, float* %arrayidx6, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.fma.f32(float, float, float) nounwind readnone
;CHECK-LABEL: @fma_f64(
;CHECK: llvm.fma.v4f64
;CHECK: ret void
define void @fma_f64(i32 %n, double* noalias %y, double* noalias %x, double* noalias %z, double* noalias %w) nounwind uwtable {
entry:
%cmp12 = icmp sgt i32 %n, 0
br i1 %cmp12, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%arrayidx2 = getelementptr inbounds double* %w, i64 %indvars.iv
%1 = load double* %arrayidx2, align 8
%arrayidx4 = getelementptr inbounds double* %z, i64 %indvars.iv
%2 = load double* %arrayidx4, align 8
%3 = tail call double @llvm.fma.f64(double %0, double %2, double %1)
%arrayidx6 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %3, double* %arrayidx6, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.fma.f64(double, double, double) nounwind readnone
;CHECK-LABEL: @fmuladd_f32(
;CHECK: llvm.fmuladd.v4f32
;CHECK: ret void
define void @fmuladd_f32(i32 %n, float* noalias %y, float* noalias %x, float* noalias %z, float* noalias %w) nounwind uwtable {
entry:
%cmp12 = icmp sgt i32 %n, 0
br i1 %cmp12, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float* %w, i64 %indvars.iv
%1 = load float* %arrayidx2, align 4
%arrayidx4 = getelementptr inbounds float* %z, i64 %indvars.iv
%2 = load float* %arrayidx4, align 4
%3 = tail call float @llvm.fmuladd.f32(float %0, float %2, float %1)
%arrayidx6 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %3, float* %arrayidx6, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.fmuladd.f32(float, float, float) nounwind readnone
;CHECK-LABEL: @fmuladd_f64(
;CHECK: llvm.fmuladd.v4f64
;CHECK: ret void
define void @fmuladd_f64(i32 %n, double* noalias %y, double* noalias %x, double* noalias %z, double* noalias %w) nounwind uwtable {
entry:
%cmp12 = icmp sgt i32 %n, 0
br i1 %cmp12, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%arrayidx2 = getelementptr inbounds double* %w, i64 %indvars.iv
%1 = load double* %arrayidx2, align 8
%arrayidx4 = getelementptr inbounds double* %z, i64 %indvars.iv
%2 = load double* %arrayidx4, align 8
%3 = tail call double @llvm.fmuladd.f64(double %0, double %2, double %1)
%arrayidx6 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %3, double* %arrayidx6, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare double @llvm.fmuladd.f64(double, double, double) nounwind readnone
;CHECK-LABEL: @pow_f32(
;CHECK: llvm.pow.v4f32
;CHECK: ret void
define void @pow_f32(i32 %n, float* noalias %y, float* noalias %x, float* noalias %z) nounwind uwtable {
entry:
%cmp9 = icmp sgt i32 %n, 0
br i1 %cmp9, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds float* %y, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%arrayidx2 = getelementptr inbounds float* %z, i64 %indvars.iv
%1 = load float* %arrayidx2, align 4
%call = tail call float @llvm.pow.f32(float %0, float %1) nounwind readnone
%arrayidx4 = getelementptr inbounds float* %x, i64 %indvars.iv
store float %call, float* %arrayidx4, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
declare float @llvm.pow.f32(float, float) nounwind readnone
;CHECK-LABEL: @pow_f64(
;CHECK: llvm.pow.v4f64
;CHECK: ret void
define void @pow_f64(i32 %n, double* noalias %y, double* noalias %x, double* noalias %z) nounwind uwtable {
entry:
%cmp9 = icmp sgt i32 %n, 0
br i1 %cmp9, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
%arrayidx = getelementptr inbounds double* %y, i64 %indvars.iv
%0 = load double* %arrayidx, align 8
%arrayidx2 = getelementptr inbounds double* %z, i64 %indvars.iv
%1 = load double* %arrayidx2, align 8
%call = tail call double @llvm.pow.f64(double %0, double %1) nounwind readnone
%arrayidx4 = getelementptr inbounds double* %x, i64 %indvars.iv
store double %call, double* %arrayidx4, align 8
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, %n
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}
; CHECK: fabs_libm
; CHECK: call <4 x float> @llvm.fabs.v4f32
; CHECK: ret void
define void @fabs_libm(float* nocapture %x) nounwind {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds float* %x, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @fabsf(float %0) nounwind readnone
store float %call, float* %arrayidx, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}
declare float @fabsf(float) nounwind readnone
declare double @llvm.pow.f64(double, double) nounwind readnone
; Make sure we don't replace calls to functions with standard library function
; signatures but defined with internal linkage.
define internal float @roundf(float %x) nounwind readnone {
ret float 0.00000000
}
; CHECK-LABEL: internal_round
; CHECK-NOT: load <4 x float>
define void @internal_round(float* nocapture %x) nounwind {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds float* %x, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%call = tail call float @roundf(float %0) nounwind readnone
store float %call, float* %arrayidx, align 4
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}
; Make sure we don't replace calls to functions with standard library names but
; different signatures.
declare void @round(double %f)
; CHECK-LABEL: wrong_signature
; CHECK-NOT: load <4 x double>
define void @wrong_signature(double* nocapture %x) nounwind {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds double* %x, i64 %indvars.iv
%0 = load double* %arrayidx, align 4
store double %0, double* %arrayidx, align 4
tail call void @round(double %0) nounwind readnone
%indvars.iv.next = add i64 %indvars.iv, 1
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
%exitcond = icmp eq i32 %lftr.wideiv, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}