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llvm-mirror/test/Transforms/LoopVectorize/minmax_reduction.ll
Arnold Schwaighofer 0a0d84c7b7 LoopVectorize: Add support for floating point min/max reductions 
Add support for min/max reductions when "no-nans-float-math" is enabled. This
allows us to assume we have ordered floating point math and treat ordered and
unordered predicates equally.

radar://13723044

llvm-svn: 181144
2013-05-05 01:54:48 +00:00

886 lines
27 KiB
LLVM
Raw Blame History

; RUN: opt -S -loop-vectorize -dce -instcombine -force-vector-width=2 -force-vector-unroll=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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @min_red
; CHECK: icmp slt <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp slt <2 x i32>
; CHECK: select <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @umax_red
; CHECK: icmp ugt <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp ugt <2 x i32>
; CHECK: select <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @umin_red
; CHECK: icmp ult <2 x i32>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: icmp ult <2 x i32>
; CHECK: select <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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 <2 x 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]* @A, i64 0, i64 %indvars.iv
%0 = load 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: @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]* @A, i64 0, i64 %indvars.iv
%arrayidx1 = getelementptr inbounds [1024 x i32]* @A, i64 1, i64 %indvars.iv
%0 = load i32* %arrayidx, align 4
%1 = load 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: @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]* @A, i64 0, i64 %indvars.iv
%arrayidx1 = getelementptr inbounds [1024 x i32]* @A, i64 1, i64 %indvars.iv
%0 = load i32* %arrayidx, align 4
%1 = load 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: @max_red_float
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @max_red_float_ge
; CHECK: fcmp oge <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @inverted_max_red_float
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @inverted_max_red_float_le
; CHECK: fcmp ole <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @unordered_max_red
; CHECK: fcmp ugt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @unordered_max_red_float_ge
; CHECK: fcmp uge <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @inverted_unordered_max_red
; CHECK: fcmp ult <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @inverted_unordered_max_red_float_le
; CHECK: fcmp ule <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @min_red_float
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @min_red_float_le
; CHECK: fcmp ole <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @inverted_min_red_float
; CHECK: fcmp ogt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @inverted_min_red_float_ge
; CHECK: fcmp oge <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @unordered_min_red
; CHECK: fcmp ult <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @unordered_min_red_float_le
; CHECK: fcmp ule <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @inverted_unordered_min_red
; CHECK: fcmp ugt <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @inverted_unordered_min_red_float_ge
; CHECK: fcmp uge <2 x float>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x float>
; CHECK: select <2 x 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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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: @min_red_double
; CHECK: fcmp olt <2 x double>
; CHECK: select <2 x i1>
; CHECK: middle.block
; CHECK: fcmp olt <2 x double>
; CHECK: select <2 x 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]* @dA, i64 0, i64 %indvars.iv
%0 = load double* %arrayidx, align 4
%cmp3 = fcmp 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: @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]* @fA, i64 0, i64 %indvars.iv
%0 = load float* %arrayidx, align 4
%cmp3 = fcmp 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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