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llvm-mirror/test/Transforms/LoopVectorize/minmax_reduction.ll
James Molloy 91b462c75d [LoopUtils,LV] Propagate fast-math flags on generated FCmp instructions 
We're currently losing any fast-math flags when synthesizing fcmps for
min/max reductions. In LV, make sure we copy over the scalar inst's
flags. In LoopUtils, we know we only ever match patterns with
hasUnsafeAlgebra, so apply that to any synthesized ops.

llvm-svn: 248201
2015-09-21 19:41:19 +00:00

886 lines
28 KiB
LLVM
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; RUN: opt -S -loop-vectorize -dce -instcombine -force-vector-width=2 -force-vector-interleave=1 < %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"
@A = common global [1024 x i32] zeroinitializer, align 16
@fA = common global [1024 x float] zeroinitializer, align 16
@dA = common global [1024 x double] zeroinitializer, align 16
; Signed tests.
; Turn this into a max reduction. Make sure we use a splat to initialize the
; vector for the reduction.
; CHECK-LABEL: @max_red(
; CHECK: %[[VAR:.*]] = insertelement <2 x i32> undef, i32 %max, i32 0
; CHECK: {{.*}} = shufflevector <2 x i32> %[[VAR]], <2 x i32> undef, <2 x i32> zeroinitializer
; CHECK: icmp sgt <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp sgt <2 x i32>
; CHECK: select i1
define i32 @max_red(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp sgt i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; Turn this into a max reduction. The select has its inputs reversed therefore
; this is a max reduction.
; CHECK-LABEL: @max_red_inverse_select(
; CHECK: icmp slt <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp sgt <2 x i32>
; CHECK: select i1
define i32 @max_red_inverse_select(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp slt i32 %max.red.08, %0
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; Turn this into a min reduction.
; CHECK-LABEL: @min_red(
; CHECK: icmp slt <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp slt <2 x i32>
; CHECK: select i1
define i32 @min_red(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp slt i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; Turn this into a min reduction. The select has its inputs reversed therefore
; this is a min reduction.
; CHECK-LABEL: @min_red_inverse_select(
; CHECK: icmp sgt <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp slt <2 x i32>
; CHECK: select i1
define i32 @min_red_inverse_select(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp sgt i32 %max.red.08, %0
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; Unsigned tests.
; Turn this into a max reduction.
; CHECK-LABEL: @umax_red(
; CHECK: icmp ugt <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp ugt <2 x i32>
; CHECK: select i1
define i32 @umax_red(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp ugt i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; Turn this into a max reduction. The select has its inputs reversed therefore
; this is a max reduction.
; CHECK-LABEL: @umax_red_inverse_select(
; CHECK: icmp ult <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp ugt <2 x i32>
; CHECK: select i1
define i32 @umax_red_inverse_select(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp ult i32 %max.red.08, %0
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; Turn this into a min reduction.
; CHECK-LABEL: @umin_red(
; CHECK: icmp ult <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp ult <2 x i32>
; CHECK: select i1
define i32 @umin_red(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp ult i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; Turn this into a min reduction. The select has its inputs reversed therefore
; this is a min reduction.
; CHECK-LABEL: @umin_red_inverse_select(
; CHECK: icmp ugt <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp ult <2 x i32>
; CHECK: select i1
define i32 @umin_red_inverse_select(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp ugt i32 %max.red.08, %0
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; SGE -> SLT
; Turn this into a min reduction (select inputs are reversed).
; CHECK-LABEL: @sge_min_red(
; CHECK: icmp sge <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp slt <2 x i32>
; CHECK: select i1
define i32 @sge_min_red(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp sge i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %max.red.08, i32 %0
%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:
ret i32 %max.red.0
}
; SLE -> SGT
; Turn this into a max reduction (select inputs are reversed).
; CHECK-LABEL: @sle_min_red(
; CHECK: icmp sle <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp sgt <2 x i32>
; CHECK: select i1
define i32 @sle_min_red(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp sle i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %max.red.08, i32 %0
%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:
ret i32 %max.red.0
}
; UGE -> ULT
; Turn this into a min reduction (select inputs are reversed).
; CHECK-LABEL: @uge_min_red(
; CHECK: icmp uge <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp ult <2 x i32>
; CHECK: select i1
define i32 @uge_min_red(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp uge i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %max.red.08, i32 %0
%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:
ret i32 %max.red.0
}
; ULE -> UGT
; Turn this into a max reduction (select inputs are reversed).
; CHECK-LABEL: @ule_min_red(
; CHECK: icmp ule <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp ugt <2 x i32>
; CHECK: select i1
define i32 @ule_min_red(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%cmp3 = icmp ule i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %max.red.08, i32 %0
%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:
ret i32 %max.red.0
}
; No reduction.
; CHECK-LABEL: @no_red_1(
; CHECK-NOT: icmp <2 x i32>
define i32 @no_red_1(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%arrayidx1 = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 1, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%1 = load i32, i32* %arrayidx1, align 4
%cmp3 = icmp sgt i32 %0, %1
%max.red.0 = select i1 %cmp3, i32 %0, i32 %max.red.08
%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:
ret i32 %max.red.0
}
; CHECK-LABEL: @no_red_2(
; CHECK-NOT: icmp <2 x i32>
define i32 @no_red_2(i32 %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi i32 [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvars.iv
%arrayidx1 = getelementptr inbounds [1024 x i32], [1024 x i32]* @A, i64 1, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%1 = load i32, i32* %arrayidx1, align 4
%cmp3 = icmp sgt i32 %0, %max.red.08
%max.red.0 = select i1 %cmp3, i32 %0, i32 %1
%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:
ret i32 %max.red.0
}
; Float tests.
; Maximum.
; Turn this into a max reduction in the presence of a no-nans-fp-math attribute.
; CHECK-LABEL: @max_red_float(
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select i1
define float @max_red_float(float %max) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ogt float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %0, float %max.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
; CHECK-LABEL: @max_red_float_ge(
; CHECK: fcmp fast oge <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select i1
define float @max_red_float_ge(float %max) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast oge float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %0, float %max.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
; CHECK-LABEL: @inverted_max_red_float(
; CHECK: fcmp fast olt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select i1
define float @inverted_max_red_float(float %max) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast olt float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %max.red.08, float %0
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
; CHECK-LABEL: @inverted_max_red_float_le(
; CHECK: fcmp fast ole <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select i1
define float @inverted_max_red_float_le(float %max) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ole float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %max.red.08, float %0
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
; CHECK-LABEL: @unordered_max_red_float(
; CHECK: fcmp fast ole <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select i1
define float @unordered_max_red_float(float %max) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ugt float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %0, float %max.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
; CHECK-LABEL: @unordered_max_red_float_ge(
; CHECK: fcmp fast olt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select i1
define float @unordered_max_red_float_ge(float %max) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast uge float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %0, float %max.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
; CHECK-LABEL: @inverted_unordered_max_red_float(
; CHECK: fcmp fast oge <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select i1
define float @inverted_unordered_max_red_float(float %max) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ult float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %max.red.08, float %0
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
; CHECK-LABEL: @inverted_unordered_max_red_float_le(
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select i1
define float @inverted_unordered_max_red_float_le(float %max) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ule float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %max.red.08, float %0
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
; Minimum.
; Turn this into a min reduction in the presence of a no-nans-fp-math attribute.
; CHECK-LABEL: @min_red_float(
; CHECK: fcmp fast olt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x float>
; CHECK: select i1
define float @min_red_float(float %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi float [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast olt float %0, %min.red.08
%min.red.0 = select i1 %cmp3, float %0, float %min.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %min.red.0
}
; CHECK-LABEL: @min_red_float_le(
; CHECK: fcmp fast ole <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x float>
; CHECK: select i1
define float @min_red_float_le(float %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi float [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ole float %0, %min.red.08
%min.red.0 = select i1 %cmp3, float %0, float %min.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %min.red.0
}
; CHECK-LABEL: @inverted_min_red_float(
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x float>
; CHECK: select i1
define float @inverted_min_red_float(float %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi float [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ogt float %0, %min.red.08
%min.red.0 = select i1 %cmp3, float %min.red.08, float %0
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %min.red.0
}
; CHECK-LABEL: @inverted_min_red_float_ge(
; CHECK: fcmp fast oge <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x float>
; CHECK: select i1
define float @inverted_min_red_float_ge(float %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi float [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast oge float %0, %min.red.08
%min.red.0 = select i1 %cmp3, float %min.red.08, float %0
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %min.red.0
}
; CHECK-LABEL: @unordered_min_red_float(
; CHECK: fcmp fast oge <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x float>
; CHECK: select i1
define float @unordered_min_red_float(float %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi float [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ult float %0, %min.red.08
%min.red.0 = select i1 %cmp3, float %0, float %min.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %min.red.0
}
; CHECK-LABEL: @unordered_min_red_float_le(
; CHECK: fcmp fast ogt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x float>
; CHECK: select i1
define float @unordered_min_red_float_le(float %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi float [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ule float %0, %min.red.08
%min.red.0 = select i1 %cmp3, float %0, float %min.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %min.red.0
}
; CHECK-LABEL: @inverted_unordered_min_red_float(
; CHECK: fcmp fast ole <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x float>
; CHECK: select i1
define float @inverted_unordered_min_red_float(float %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi float [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ugt float %0, %min.red.08
%min.red.0 = select i1 %cmp3, float %min.red.08, float %0
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %min.red.0
}
; CHECK-LABEL: @inverted_unordered_min_red_float_ge(
; CHECK: fcmp fast olt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x float>
; CHECK: select i1
define float @inverted_unordered_min_red_float_ge(float %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi float [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast uge float %0, %min.red.08
%min.red.0 = select i1 %cmp3, float %min.red.08, float %0
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %min.red.0
}
; Make sure we handle doubles, too.
; CHECK-LABEL: @min_red_double(
; CHECK: fcmp fast olt <2 x double>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp fast olt <2 x double>
; CHECK: select i1
define double @min_red_double(double %min) #0 {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%min.red.08 = phi double [ %min, %entry ], [ %min.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x double], [1024 x double]* @dA, i64 0, i64 %indvars.iv
%0 = load double, double* %arrayidx, align 4
%cmp3 = fcmp fast olt double %0, %min.red.08
%min.red.0 = select i1 %cmp3, double %0, double %min.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret double %min.red.0
}
; Don't this into a max reduction. The no-nans-fp-math attribute is missing
; CHECK-LABEL: @max_red_float_nans(
; CHECK-NOT: <2 x float>
define float @max_red_float_nans(float %max) {
entry:
br label %for.body
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%max.red.08 = phi float [ %max, %entry ], [ %max.red.0, %for.body ]
%arrayidx = getelementptr inbounds [1024 x float], [1024 x float]* @fA, i64 0, i64 %indvars.iv
%0 = load float, float* %arrayidx, align 4
%cmp3 = fcmp fast ogt float %0, %max.red.08
%max.red.0 = select i1 %cmp3, float %0, float %max.red.08
%indvars.iv.next = add i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1024
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret float %max.red.0
}
attributes #0 = { "no-nans-fp-math"="true" }
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