From 71490fa946f750fb3afe7228a32d31d401d4c1d8 Mon Sep 17 00:00:00 2001
From: Krzysztof Parzyszek <kparzysz@codeaurora.org>
Date: Mon, 11 Feb 2013 21:37:55 +0000
Subject: Extend Hexagon hardware loop generation to handle various additional
 cases: - variety of compare instructions, - loops with no preheader, -
 arbitrary lower and upper bounds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174904 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/Hexagon/hwloop-lt.ll | 438 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 438 insertions(+)
 create mode 100644 test/CodeGen/Hexagon/hwloop-lt.ll

(limited to 'test/CodeGen/Hexagon/hwloop-lt.ll')

diff --git a/test/CodeGen/Hexagon/hwloop-lt.ll b/test/CodeGen/Hexagon/hwloop-lt.ll
new file mode 100644
index 00000000000..7e43733da2a
--- /dev/null
+++ b/test/CodeGen/Hexagon/hwloop-lt.ll
@@ -0,0 +1,438 @@
+; RUN: llc -march=hexagon -mcpu=hexagonv4 -O3 < %s | FileCheck %s
+
+
+; CHECK: test_pos1_ir_slt
+; CHECK: loop0
+; a < b
+define void @test_pos1_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 8531, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ 8531, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 1
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos2_ir_slt
+; CHECK: loop0
+; a < b
+define void @test_pos2_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 9152, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ 9152, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 2
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos4_ir_slt
+; CHECK: loop0
+; a < b
+define void @test_pos4_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 18851, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ 18851, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 4
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos8_ir_slt
+; CHECK: loop0
+; a < b
+define void @test_pos8_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 25466, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ 25466, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 8
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos16_ir_slt
+; CHECK: loop0
+; a < b
+define void @test_pos16_ir_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 9295, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ 9295, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 16
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos1_ri_slt
+; CHECK: loop0
+; a < b
+define void @test_pos1_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, 31236
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 1
+  %cmp = icmp slt i32 %inc, 31236
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos2_ri_slt
+; CHECK: loop0
+; a < b
+define void @test_pos2_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, 22653
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 2
+  %cmp = icmp slt i32 %inc, 22653
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos4_ri_slt
+; CHECK: loop0
+; a < b
+define void @test_pos4_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, 1431
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 4
+  %cmp = icmp slt i32 %inc, 1431
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos8_ri_slt
+; CHECK: loop0
+; a < b
+define void @test_pos8_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, 22403
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 8
+  %cmp = icmp slt i32 %inc, 22403
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos16_ri_slt
+; CHECK: loop0
+; a < b
+define void @test_pos16_ri_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, 21715
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 16
+  %cmp = icmp slt i32 %inc, 21715
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos1_rr_slt
+; CHECK: loop0
+; a < b
+define void @test_pos1_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 1
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos2_rr_slt
+; CHECK: loop0
+; a < b
+define void @test_pos2_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 2
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos4_rr_slt
+; CHECK: loop0
+; a < b
+define void @test_pos4_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 4
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos8_rr_slt
+; CHECK: loop0
+; a < b
+define void @test_pos8_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 8
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
+; CHECK: test_pos16_rr_slt
+; CHECK: loop0
+; a < b
+define void @test_pos16_rr_slt(i8* nocapture %p, i32 %a, i32 %b) nounwind {
+entry:
+  %cmp3 = icmp slt i32 %a, %b
+  br i1 %cmp3, label %for.body.lr.ph, label %for.end
+
+for.body.lr.ph:                                   ; preds = %entry
+  br label %for.body
+
+for.body:                                         ; preds = %for.body.lr.ph, %for.body
+  %i.04 = phi i32 [ %a, %for.body.lr.ph ], [ %inc, %for.body ]
+  %arrayidx = getelementptr inbounds i8* %p, i32 %i.04
+  %0 = load i8* %arrayidx, align 1
+  %conv = zext i8 %0 to i32
+  %add = add nsw i32 %conv, 1
+  %conv1 = trunc i32 %add to i8
+  store i8 %conv1, i8* %arrayidx, align 1
+  %inc = add nsw i32 %i.04, 16
+  %cmp = icmp slt i32 %inc, %b
+  br i1 %cmp, label %for.body, label %for.end
+
+for.end:                                          ; preds = %for.body, %entry
+  ret void
+}
+
+
+
-- 
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