forked from OSchip/llvm-project
130 lines
4.9 KiB
LLVM
130 lines
4.9 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu -hoist-const-stores -ppc-stack-ptr-caller-preserved < %s | FileCheck %s
|
|
; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu -hoist-const-stores -ppc-stack-ptr-caller-preserved < %s | FileCheck %s -check-prefix=CHECKBE
|
|
|
|
; Test hoist out of single loop
|
|
define signext i32 @test1(i32 signext %lim, i32 (i32)* nocapture %Func) {
|
|
entry:
|
|
; CHECK-LABEL: test1
|
|
; CHECK: for.body.preheader
|
|
; CHECK: std 2, 24(1)
|
|
; CHECK: for.body
|
|
; CHECK-NOT: std 2, 24(1)
|
|
; CHECKBE-LABEL: test1
|
|
; CHECKBE: for.body.preheader
|
|
; CHECKBE: std 2, 40(1)
|
|
; CHECKBE: for.body
|
|
; CHECKBE-NOT: std 2, 40(1)
|
|
|
|
%cmp6 = icmp sgt i32 %lim, 0
|
|
br i1 %cmp6, label %for.body.preheader, label %for.cond.cleanup
|
|
|
|
for.body.preheader: ; preds = %entry
|
|
br label %for.body
|
|
|
|
for.cond.cleanup: ; preds = %for.body, %entry
|
|
%Sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
|
|
ret i32 %Sum.0.lcssa
|
|
|
|
for.body: ; preds = %for.body.preheader, %for.body
|
|
%i.08 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
|
|
%Sum.07 = phi i32 [ %add, %for.body ], [ 0, %for.body.preheader ]
|
|
%call = tail call signext i32 %Func(i32 signext %i.08)
|
|
%add = add nsw i32 %call, %Sum.07
|
|
%inc = add nuw nsw i32 %i.08, 1
|
|
%exitcond = icmp eq i32 %inc, %lim
|
|
br i1 %exitcond, label %for.cond.cleanup, label %for.body
|
|
}
|
|
|
|
; Test hoist of nested loop goes to outter loop preheader
|
|
define signext i32 @test2(i32 signext %lim, i32 (i32)* nocapture %Func) {
|
|
entry:
|
|
; CHECK-LABEL: test2
|
|
; CHECK: for.body4.lr.ph.preheader
|
|
; CHECK: std 2, 24(1)
|
|
; CHECK: for.body4.lr.ph
|
|
; CHECK-NOT: std 2, 24(1)
|
|
; CHECKBE-LABEL: test2
|
|
; CHECKBE: for.body4.lr.ph.preheader
|
|
; CHECKBE: std 2, 40(1)
|
|
; CHECKBE: for.body4.lr.ph
|
|
; CHECKBE-NOT: std 2, 40(1)
|
|
|
|
%cmp20 = icmp sgt i32 %lim, 0
|
|
br i1 %cmp20, label %for.body4.lr.ph.preheader, label %for.cond.cleanup
|
|
|
|
for.body4.lr.ph.preheader: ; preds = %entry
|
|
br label %for.body4.lr.ph
|
|
|
|
for.cond.cleanup: ; preds = %for.cond.cleanup3, %entry
|
|
%Sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.cond.cleanup3 ]
|
|
ret i32 %Sum.0.lcssa
|
|
|
|
for.body4.lr.ph: ; preds = %for.body4.lr.ph.preheader, %for.cond.cleanup3
|
|
%j.022 = phi i32 [ %inc6, %for.cond.cleanup3 ], [ 0, %for.body4.lr.ph.preheader ]
|
|
%Sum.021 = phi i32 [ %add, %for.cond.cleanup3 ], [ 0, %for.body4.lr.ph.preheader ]
|
|
br label %for.body4
|
|
|
|
for.cond.cleanup3: ; preds = %for.body4
|
|
%inc6 = add nuw nsw i32 %j.022, 1
|
|
%exitcond24 = icmp eq i32 %inc6, %lim
|
|
br i1 %exitcond24, label %for.cond.cleanup, label %for.body4.lr.ph
|
|
|
|
for.body4: ; preds = %for.body4, %for.body4.lr.ph
|
|
%i.019 = phi i32 [ %j.022, %for.body4.lr.ph ], [ %inc, %for.body4 ]
|
|
%Sum.118 = phi i32 [ %Sum.021, %for.body4.lr.ph ], [ %add, %for.body4 ]
|
|
%call = tail call signext i32 %Func(i32 signext %i.019)
|
|
%add = add nsw i32 %call, %Sum.118
|
|
%inc = add nuw nsw i32 %i.019, 1
|
|
%exitcond = icmp eq i32 %inc, %lim
|
|
br i1 %exitcond, label %for.cond.cleanup3, label %for.body4
|
|
}
|
|
|
|
; Test hoist out of if statement with low branch probability
|
|
; FIXME: we shouldn't hoist in such cases as it could increase the number
|
|
; of stores after hoisting.
|
|
define signext i32 @test3(i32 signext %lim, i32 (i32)* nocapture %Func) {
|
|
entry:
|
|
; CHECK-LABEL: test3
|
|
; CHECK: %for.body.lr.ph
|
|
; CHECK: std 2, 24(1)
|
|
; CHECK: %for.body
|
|
; CHECK-NOT: std 2, 24(1)
|
|
; CHECKBE-LABEL: test3
|
|
; CHECKBE: %for.body.lr.ph
|
|
; CHECKBE: std 2, 40(1)
|
|
; CHECKBE: %for.body
|
|
; CHECKBE-NOT: std 2, 40(1)
|
|
|
|
%cmp13 = icmp sgt i32 %lim, 0
|
|
br i1 %cmp13, label %for.body.lr.ph, label %for.cond.cleanup
|
|
|
|
for.body.lr.ph: ; preds = %entry
|
|
%sub = add nsw i32 %lim, -1
|
|
br label %for.body
|
|
|
|
for.cond.cleanup: ; preds = %if.end, %entry
|
|
%Sum.0.lcssa = phi i32 [ 0, %entry ], [ %add3, %if.end ]
|
|
ret i32 %Sum.0.lcssa
|
|
|
|
for.body: ; preds = %if.end, %for.body.lr.ph
|
|
%i.015 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end ]
|
|
%Sum.014 = phi i32 [ 0, %for.body.lr.ph ], [ %add3, %if.end ]
|
|
%cmp1 = icmp eq i32 %i.015, %sub
|
|
br i1 %cmp1, label %if.then, label %if.end
|
|
|
|
if.then: ; preds = %for.body
|
|
%call = tail call signext i32 %Func(i32 signext %sub)
|
|
%add = add nsw i32 %call, %Sum.014
|
|
br label %if.end
|
|
|
|
if.end: ; preds = %if.then, %for.body
|
|
%Sum.1 = phi i32 [ %add, %if.then ], [ %Sum.014, %for.body ]
|
|
%call2 = tail call signext i32 @func(i32 signext %i.015)
|
|
%add3 = add nsw i32 %call2, %Sum.1
|
|
%inc = add nuw nsw i32 %i.015, 1
|
|
%exitcond = icmp eq i32 %inc, %lim
|
|
br i1 %exitcond, label %for.cond.cleanup, label %for.body
|
|
}
|
|
|
|
declare signext i32 @func(i32 signext)
|