52 lines
1.5 KiB
LLVM
52 lines
1.5 KiB
LLVM
|
; RUN: llc -march=hexagon -mcpu=hexagonv5 -enable-pipeliner -verify-machineinstrs < %s | FileCheck %s
|
||
|
|
|
||
|
|
; If the trip count is a compile-time constant, then decrement it instead
|
||
|
|
; of computing a new LC0 value.
|
||
|
|
|
||
|
|
; CHECK-LABEL: @test
|
||
|
|
; CHECK: loop0(.LBB0_1,#999)
|
||
|
|
|
||
|
|
define i32 @test(i32* %A, i32* %B, i32 %count) {
|
||
|
|
entry:
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%sum.02 = phi i32 [ 0, %entry ], [ %add, %for.body ]
|
||
|
|
%arrayidx.phi = phi i32* [ %A, %entry ], [ %arrayidx.inc, %for.body ]
|
||
|
|
%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
||
|
|
%0 = load i32, i32* %arrayidx.phi, align 4
|
||
|
|
%add = add nsw i32 %0, %sum.02
|
||
|
|
%inc = add nsw i32 %i.01, 1
|
||
|
|
%exitcond = icmp eq i32 %inc, 1000
|
||
|
|
%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
|
||
|
|
br i1 %exitcond, label %for.end, label %for.body
|
||
|
|
|
||
|
|
for.end:
|
||
|
|
ret i32 %add
|
||
|
|
}
|
||
|
|
|
||
|
|
; The constant trip count is small enough that the kernel is not executed.
|
||
|
|
|
||
|
|
; CHECK-LABEL: @test1
|
||
|
|
; CHECK-NOT: loop0(
|
||
|
|
|
||
|
|
define i32 @test1(i32* %A, i32* %B, i32 %count) {
|
||
|
|
entry:
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
%sum.02 = phi i32 [ 0, %entry ], [ %add, %for.body ]
|
||
|
|
%arrayidx.phi = phi i32* [ %A, %entry ], [ %arrayidx.inc, %for.body ]
|
||
|
|
%i.01 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
||
|
|
%0 = load i32, i32* %arrayidx.phi, align 4
|
||
|
|
%add = add nsw i32 %0, %sum.02
|
||
|
|
%inc = add nsw i32 %i.01, 1
|
||
|
|
%exitcond = icmp eq i32 %inc, 1
|
||
|
|
%arrayidx.inc = getelementptr i32, i32* %arrayidx.phi, i32 1
|
||
|
|
br i1 %exitcond, label %for.end, label %for.body
|
||
|
|
|
||
|
|
for.end:
|
||
|
|
ret i32 %add
|
||
|
|
}
|
||
|
|
|