[Hexagon] Generate more hardware loops

Refactored parts of the hardware loop pass to generate
more. Also, added more tests.

Differential Revision: http://reviews.llvm.org/D9568

llvm-svn: 236896

1 files changed, 60 insertions, 89 deletions

diff --git a/llvm/test/CodeGen/Hexagon/hwloop-lt.ll b/llvm/test/CodeGen/Hexagon/hwloop-lt.ll
index 804f76456e2..7e2ad2a4678 100644
--- a/llvm/test/CodeGen/Hexagon/hwloop-lt.ll
+++ b/llvm/test/CodeGen/Hexagon/hwloop-lt.ll
@@ -1,7 +1,6 @@
 ; RUN: llc -march=hexagon -mcpu=hexagonv4 -O3 < %s | FileCheck %s
 
-
-; CHECK: test_pos1_ir_slt
+; CHECK-LABEL: @test_pos1_ir_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos1_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -9,10 +8,10 @@ entry:
   %cmp3 = icmp slt i32 8531, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ 8531, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -24,13 +23,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos2_ir_slt
+; CHECK-LABEL: @test_pos2_ir_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos2_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -38,10 +35,10 @@ entry:
   %cmp3 = icmp slt i32 9152, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ 9152, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -53,13 +50,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos4_ir_slt
+; CHECK-LABEL: @test_pos4_ir_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos4_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -67,10 +62,10 @@ entry:
   %cmp3 = icmp slt i32 18851, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ 18851, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -82,13 +77,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos8_ir_slt
+; CHECK-LABEL: @test_pos8_ir_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos8_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -96,10 +89,10 @@ entry:
   %cmp3 = icmp slt i32 25466, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ 25466, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -111,13 +104,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos16_ir_slt
+; CHECK-LABEL: @test_pos16_ir_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos16_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -125,10 +116,10 @@ entry:
   %cmp3 = icmp slt i32 9295, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ 9295, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -140,13 +131,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos1_ri_slt
+; CHECK-LABEL: @test_pos1_ri_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos1_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -154,10 +143,10 @@ entry:
   %cmp3 = icmp slt i32 %a, 31236
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -169,13 +158,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, 31236
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos2_ri_slt
+; CHECK-LABEL: @test_pos2_ri_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos2_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -183,10 +170,10 @@ entry:
   %cmp3 = icmp slt i32 %a, 22653
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -198,13 +185,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, 22653
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos4_ri_slt
+; CHECK-LABEL: @test_pos4_ri_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos4_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -212,10 +197,10 @@ entry:
   %cmp3 = icmp slt i32 %a, 1431
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -227,13 +212,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, 1431
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos8_ri_slt
+; CHECK-LABEL: @test_pos8_ri_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos8_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -241,10 +224,10 @@ entry:
   %cmp3 = icmp slt i32 %a, 22403
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -256,13 +239,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, 22403
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos16_ri_slt
+; CHECK-LABEL: @test_pos16_ri_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos16_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -270,10 +251,10 @@ entry:
   %cmp3 = icmp slt i32 %a, 21715
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -285,13 +266,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, 21715
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos1_rr_slt
+; CHECK-LABEL: @test_pos1_rr_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos1_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -299,10 +278,10 @@ entry:
   %cmp3 = icmp slt i32 %a, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -314,13 +293,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos2_rr_slt
+; CHECK-LABEL: @test_pos2_rr_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos2_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -328,10 +305,10 @@ entry:
   %cmp3 = icmp slt i32 %a, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -343,13 +320,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos4_rr_slt
+; CHECK-LABEL: @test_pos4_rr_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos4_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -357,10 +332,10 @@ entry:
   %cmp3 = icmp slt i32 %a, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -372,13 +347,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos8_rr_slt
+; CHECK-LABEL: @test_pos8_rr_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos8_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -386,10 +359,10 @@ entry:
   %cmp3 = icmp slt i32 %a, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -401,13 +374,11 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }
 
-
-
-; CHECK: test_pos16_rr_slt
+; CHECK-LABEL: @test_pos16_rr_slt
 ; CHECK: loop0
 ; a < b
 define void @test_pos16_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
@@ -415,10 +386,10 @@ entry:
   %cmp3 = icmp slt i32 %a, %b
   br i1 %cmp3, label %for.body.lr.ph, label %for.end
 
-for.body.lr.ph:                                   ; preds = %entry
+for.body.lr.ph:
   br label %for.body
 
-for.body:                                         ; preds = %for.body.lr.ph, %for.body
+for.body:
   %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
   %arrayidx = getelementptr inbounds i8, i8* %p, i32 %i.04
   %0 = load i8, i8* %arrayidx, align 1
@@ -430,7 +401,7 @@ for.body:                                         ; preds = %for.body.lr.ph, %fo
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %for.body, label %for.end
 
-for.end:                                          ; preds = %for.body, %entry
+for.end:
   ret void
 }