forked from OSchip/llvm-project
53 lines
1.6 KiB
LLVM
53 lines
1.6 KiB
LLVM
|
; RUN: opt < %s -S -mtriple=amdgcn-- -basicaa -loop-unroll | FileCheck %s
|
||
|
|
|
||
|
|
; Check that the loop in unroll_default is not fully unrolled using the default
|
||
|
|
; unroll threshold
|
||
|
|
; CHECK-LABEL: @unroll_default
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK: br i1 %cmp
|
||
|
|
; CHECK: ret void
|
||
|
|
|
||
|
|
; Check that the same loop in unroll_full is fully unrolled when the default
|
||
|
|
; unroll threshold is increased by use of the amdgpu-unroll-threshold attribute
|
||
|
|
; CHECK-LABEL: @unroll_full
|
||
|
|
; CHECK: entry:
|
||
|
|
; CHECK-NOT: br i1 %cmp
|
||
|
|
; CHECK: ret void
|
||
|
|
|
||
|
|
@in = internal unnamed_addr global i32* null, align 8
|
||
|
|
@out = internal unnamed_addr global i32* null, align 8
|
||
|
|
|
||
|
|
define void @unroll_default() {
|
||
|
|
entry:
|
||
|
|
br label %do.body
|
||
|
|
|
||
|
|
do.body: ; preds = %entry
|
||
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %do.body ]
|
||
|
|
%v1 = load i64, i64* bitcast (i32** @in to i64*), align 8
|
||
|
|
store i64 %v1, i64* bitcast (i32** @out to i64*), align 8
|
||
|
|
%inc = add nsw i32 %i.0, 1
|
||
|
|
%cmp = icmp slt i32 %inc, 100
|
||
|
|
br i1 %cmp, label %do.body, label %do.end
|
||
|
|
|
||
|
|
do.end: ; preds = %do.body
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define void @unroll_full() #0 {
|
||
|
|
entry:
|
||
|
|
br label %do.body
|
||
|
|
|
||
|
|
do.body: ; preds = %entry
|
||
|
|
%i.0 = phi i32 [ 0, %entry ], [ %inc, %do.body ]
|
||
|
|
%v1 = load i64, i64* bitcast (i32** @in to i64*), align 8
|
||
|
|
store i64 %v1, i64* bitcast (i32** @out to i64*), align 8
|
||
|
|
%inc = add nsw i32 %i.0, 1
|
||
|
|
%cmp = icmp slt i32 %inc, 100
|
||
|
|
br i1 %cmp, label %do.body, label %do.end
|
||
|
|
|
||
|
|
do.end: ; preds = %do.body
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
attributes #0 = { "amdgpu-unroll-threshold"="1000" }
|