51 lines
1.8 KiB
LLVM
51 lines
1.8 KiB
LLVM
; RUN: opt -passes='loop-vectorize' -mcpu=z13 -force-vector-width=2 -S < %s | FileCheck %s
|
|
;
|
|
; Forcing VF=2 to trigger vector code gen
|
|
;
|
|
; This is a test case to exercise more cases in truncateToMinimalBitWidths().
|
|
; Test passes if vector code is generated w/o hitting llvm_unreachable().
|
|
;
|
|
; Performing minimal check in the output to ensure the loop is actually
|
|
; vectorized.
|
|
;
|
|
; CHECK: vector.body
|
|
|
|
target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
|
|
target triple = "s390x-ibm-linux"
|
|
|
|
define void @test(i32 zeroext %width, i8* nocapture %row, i16 zeroext %src, i16* nocapture readonly %dst) {
|
|
entry:
|
|
%cmp10 = icmp eq i32 %width, 0
|
|
br i1 %cmp10, label %for.end, label %for.body.lr.ph
|
|
|
|
for.body.lr.ph: ; preds = %entry
|
|
%conv1 = zext i16 %src to i32
|
|
br label %for.body
|
|
|
|
for.body: ; preds = %for.inc, %for.body.lr.ph
|
|
%i.012 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ]
|
|
%sp.011 = phi i8* [ %row, %for.body.lr.ph ], [ %incdec.ptr, %for.inc ]
|
|
%0 = load i8, i8* %sp.011, align 1
|
|
%conv = zext i8 %0 to i32
|
|
%cmp2 = icmp eq i32 %conv, %conv1
|
|
br i1 %cmp2, label %if.then, label %for.inc
|
|
|
|
if.then: ; preds = %for.body
|
|
%1 = load i16, i16* %dst, align 2
|
|
%conv4 = trunc i16 %1 to i8
|
|
store i8 %conv4, i8* %sp.011, align 1
|
|
br label %for.inc
|
|
|
|
for.inc: ; preds = %for.body, %if.then
|
|
%inc = add nuw i32 %i.012, 1
|
|
%incdec.ptr = getelementptr inbounds i8, i8* %sp.011, i64 1
|
|
%exitcond = icmp eq i32 %inc, %width
|
|
br i1 %exitcond, label %for.end.loopexit, label %for.body
|
|
|
|
for.end.loopexit: ; preds = %for.inc
|
|
br label %for.end
|
|
|
|
for.end: ; preds = %for.end.loopexit, %entry
|
|
ret void
|
|
}
|