Temporarily Revert "Add basic loop fusion pass."

As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546

1 files changed, 0 insertions, 354 deletions

diff --git a/llvm/test/Transforms/IRCE/variable-loop-bounds.ll b/llvm/test/Transforms/IRCE/variable-loop-bounds.ll
deleted file mode 100644
index 5749b2c2d41..00000000000
--- a/llvm/test/Transforms/IRCE/variable-loop-bounds.ll
+++ /dev/null
@@ -1,354 +0,0 @@
-; RUN: opt -irce -S -verify-loop-info -irce-print-changed-loops -irce-skip-profitability-checks < %s 2>&1 | FileCheck %s
-
-; CHECK: irce: in function test_inc_eq: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%if.then,%for.inc<latch><exiting>
-; CHECK: irce: in function test_inc_ne: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%if.then,%for.inc<latch><exiting>
-; CHECK: irce: in function test_inc_slt: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%if.then,%for.inc<latch><exiting>
-; CHECK: irce: in function test_inc_ult: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%if.then,%for.inc<latch><exiting>
-; CHECK: irce: in function signed_var_imm_dec_sgt: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%for.inc<latch><exiting>
-; CHECK-NOT: irce: in function signed_var_imm_dec_slt: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%for.inc<latch><exiting>
-; CHECK: irce: in function signed_var_imm_dec_sge: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%for.inc<latch><exiting>
-; CHECK: irce: in function signed_var_imm_dec_ne: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%for.inc<latch><exiting>
-; CHECK-NOT: irce: in function signed_var_imm_dec_eq: constrained Loop at depth 1 containing: %for.body<header>,%if.else,%for.inc<latch><exiting>
-
-; CHECK-LABEL: test_inc_eq(
-; CHECK: main.exit.selector:
-; CHECK: [[PSEUDO_PHI:%[^ ]+]] = phi i32 [ %inc, %for.inc ]
-; CHECK: [[COND:%[^ ]+]] = icmp ult i32 [[PSEUDO_PHI]], %N
-; CHECK: br i1 [[COND]], label %main.pseudo.exit, label %for.cond.cleanup.loopexit
-define void @test_inc_eq(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
-entry:
-  %cmp16 = icmp sgt i32 %N, 0
-  br i1 %cmp16, label %for.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-
-for.body:
-  %i.017 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
-  %cmp1 = icmp ult i32 %i.017, 512
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %i.017
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %i.017
-  %1 = load i32, i32* %arrayidx2, align 4
-  br i1 %cmp1, label %if.then, label %if.else
-
-if.then:
-  %sub = sub i32 %0, %1
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %i.017
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %sub, %2
-  store i32 %add, i32* %arrayidx3, align 4
-  br label %for.inc
-
-if.else:
-  %add6 = add nsw i32 %1, %0
-  %arrayidx7 = getelementptr inbounds i32, i32* %a, i32 %i.017
-  store i32 %add6, i32* %arrayidx7, align 4
-  br label %for.inc
-
-for.inc:
-  %inc = add nuw nsw i32 %i.017, 1
-  %exitcond = icmp eq i32 %inc, %N
-  br i1 %exitcond, label %for.cond.cleanup, label %for.body
-}
-
-; CHECK-LABEL: test_inc_ne
-; CHECK: main.exit.selector:
-; CHECK: [[PSEUDO_PHI:%[^ ]+]] = phi i32 [ %inc, %for.inc ]
-; CHECK: [[COND:%[^ ]+]] = icmp ult i32 [[PSEUDO_PHI]], %N
-; CHECK: br i1 [[COND]], label %main.pseudo.exit, label %for.cond.cleanup.loopexit
-define void @test_inc_ne(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
-entry:
-  %cmp16 = icmp sgt i32 %N, 0
-  br i1 %cmp16, label %for.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-
-for.body:
-  %i.017 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
-  %cmp1 = icmp ult i32 %i.017, 512
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %i.017
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %i.017
-  %1 = load i32, i32* %arrayidx2, align 4
-  br i1 %cmp1, label %if.then, label %if.else
-
-if.then:
-  %sub = sub i32 %0, %1
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %i.017
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %sub, %2
-  store i32 %add, i32* %arrayidx3, align 4
-  br label %for.inc
-
-if.else:
-  %add6 = add nsw i32 %1, %0
-  %arrayidx7 = getelementptr inbounds i32, i32* %a, i32 %i.017
-  store i32 %add6, i32* %arrayidx7, align 4
-  br label %for.inc
-
-for.inc:
-  %inc = add nuw nsw i32 %i.017, 1
-  %exitcond = icmp ne i32 %inc, %N
-  br i1 %exitcond, label %for.body, label %for.cond.cleanup
-}
-
-; CHECK-LABEL: test_inc_slt(
-; CHECK: main.exit.selector:
-; CHECK: [[PSEUDO_PHI:%[^ ]+]] = phi i32 [ %inc, %for.inc ]
-; CHECK: [[COND:%[^ ]+]] = icmp slt i32 [[PSEUDO_PHI]], %N
-; CHECK: br i1 [[COND]], label %main.pseudo.exit, label %for.cond.cleanup.loopexit
-define void @test_inc_slt(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
-entry:
-  %cmp16 = icmp sgt i32 %N, 0
-  br i1 %cmp16, label %for.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-
-for.body:
-  %i.017 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
-  %cmp1 = icmp ult i32 %i.017, 512
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %i.017
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %i.017
-  %1 = load i32, i32* %arrayidx2, align 4
-  br i1 %cmp1, label %if.then, label %if.else
-
-if.then:
-  %sub = sub i32 %0, %1
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %i.017
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %sub, %2
-  store i32 %add, i32* %arrayidx3, align 4
-  br label %for.inc
-
-if.else:
-  %add6 = add nsw i32 %1, %0
-  %arrayidx7 = getelementptr inbounds i32, i32* %a, i32 %i.017
-  store i32 %add6, i32* %arrayidx7, align 4
-  br label %for.inc
-
-for.inc:
-  %inc = add nuw nsw i32 %i.017, 1
-  %exitcond = icmp slt i32 %inc, %N
-  br i1 %exitcond, label %for.body, label %for.cond.cleanup
-}
-
-; CHECK-LABEL: test_inc_ult
-; CHECK: main.exit.selector:
-; CHECK: [[PSEUDO_PHI:%[^ ]+]] = phi i32 [ %inc, %for.inc ]
-; CHECK: [[COND:%[^ ]+]] = icmp ult i32 [[PSEUDO_PHI]], %N
-; CHECK: br i1 [[COND]], label %main.pseudo.exit, label %for.cond.cleanup.loopexit
-define void @test_inc_ult(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %N) {
-entry:
-  %cmp16 = icmp ugt i32 %N, 0
-  br i1 %cmp16, label %for.body, label %for.cond.cleanup
-
-for.cond.cleanup:
-  ret void
-
-for.body:
-  %i.017 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
-  %cmp1 = icmp ult i32 %i.017, 512
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %i.017
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %i.017
-  %1 = load i32, i32* %arrayidx2, align 4
-  br i1 %cmp1, label %if.then, label %if.else
-
-if.then:
-  %sub = sub i32 %0, %1
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %i.017
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %sub, %2
-  store i32 %add, i32* %arrayidx3, align 4
-  br label %for.inc
-
-if.else:
-  %add6 = add nsw i32 %1, %0
-  %arrayidx7 = getelementptr inbounds i32, i32* %a, i32 %i.017
-  store i32 %add6, i32* %arrayidx7, align 4
-  br label %for.inc
-
-for.inc:
-  %inc = add nuw nsw i32 %i.017, 1
-  %exitcond = icmp ult i32 %inc, %N
-  br i1 %exitcond, label %for.body, label %for.cond.cleanup
-}
-
-; CHECK-LABEL: signed_var_imm_dec_sgt(
-; CHECK: main.exit.selector:
-; CHECK: [[PSEUDO_PHI:%[^ ]+]] = phi i32 [ %dec, %for.inc ]
-; CHECK: [[COND:%[^ ]+]] = icmp sgt i32 [[PSEUDO_PHI]], %M
-; CHECK: br i1 [[COND]]
-define void @signed_var_imm_dec_sgt(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %M) {
-entry:
-  %cmp14 = icmp slt i32 %M, 1024
-  br i1 %cmp14, label %for.body, label %for.cond.cleanup
-
-for.cond.cleanup:                                 ; preds = %for.inc, %entry
-  ret void
-
-for.body:                                         ; preds = %entry, %for.inc
-  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
-  %cmp1 = icmp slt i32 %iv, 1024
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %iv
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %iv
-  %1 = load i32, i32* %arrayidx2, align 4
-  %mul = mul nsw i32 %1, %0
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %iv
-  br i1 %cmp1, label %for.inc, label %if.else
-
-if.else:                                          ; preds = %for.body
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %2, %mul
-  br label %for.inc
-
-for.inc:                                          ; preds = %for.body, %if.else
-  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
-  store i32 %storemerge, i32* %arrayidx3, align 4
-  %dec = add nsw i32 %iv, -1
-  %cmp = icmp sgt i32 %dec, %M
-  br i1 %cmp, label %for.body, label %for.cond.cleanup
-}
-
-; CHECK-LABEL: signed_var_imm_dec_sge(
-; CHECK: main.exit.selector:          ; preds = %for.inc
-; CHECK: [[PSEUDO_PHI:%[^ ]+]] = phi i32 [ %iv, %for.inc ]
-; CHECK: [[COND:%[^ ]+]] = icmp sgt i32 [[PSEUDO_PHI]], %M
-; CHECK: br i1 [[COND]]
-define void @signed_var_imm_dec_sge(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %M) {
-entry:
-  %cmp14 = icmp sgt i32 %M, 1024
-  br i1 %cmp14, label %for.cond.cleanup, label %for.body
-
-for.cond.cleanup:                                 ; preds = %for.inc, %entry
-  ret void
-
-for.body:                                         ; preds = %entry, %for.inc
-  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
-  %cmp1 = icmp slt i32 %iv, 1024
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %iv
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %iv
-  %1 = load i32, i32* %arrayidx2, align 4
-  %mul = mul nsw i32 %1, %0
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %iv
-  br i1 %cmp1, label %for.inc, label %if.else
-
-if.else:                                          ; preds = %for.body
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %2, %mul
-  br label %for.inc
-
-for.inc:                                          ; preds = %for.body, %if.else
-  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
-  store i32 %storemerge, i32* %arrayidx3, align 4
-  %dec = add nsw i32 %iv, -1
-  %cmp = icmp sgt i32 %iv, %M
-  br i1 %cmp, label %for.body, label %for.cond.cleanup
-}
-
-define void @signed_var_imm_dec_slt(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %M) {
-entry:
-  %cmp14 = icmp sgt i32 %M, 1024
-  br i1 %cmp14, label %for.cond.cleanup, label %for.body
-
-for.cond.cleanup:                                 ; preds = %for.inc, %entry
-  ret void
-
-for.body:                                         ; preds = %entry, %for.inc
-  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
-  %cmp1 = icmp slt i32 %iv, 1024
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %iv
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %iv
-  %1 = load i32, i32* %arrayidx2, align 4
-  %mul = mul nsw i32 %1, %0
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %iv
-  br i1 %cmp1, label %for.inc, label %if.else
-
-if.else:                                          ; preds = %for.body
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %2, %mul
-  br label %for.inc
-
-for.inc:                                          ; preds = %for.body, %if.else
-  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
-  store i32 %storemerge, i32* %arrayidx3, align 4
-  %dec = add nsw i32 %iv, -1
-  %cmp = icmp slt i32 %iv, %M
-  br i1 %cmp, label %for.cond.cleanup, label %for.body
-}
-
-; CHECK-LABEL: signed_var_imm_dec_ne(
-; CHECK: main.exit.selector:          ; preds = %for.inc
-; CHECK: [[PSEUDO_PHI:%[^ ]+]] = phi i32 [ %dec, %for.inc ]
-; CHECK: [[COND:%[^ ]+]] = icmp sgt i32 [[PSEUDO_PHI]], %M
-; CHECK: br i1 [[COND]]
-define void @signed_var_imm_dec_ne(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %M) {
-entry:
-  %cmp14 = icmp slt i32 %M, 1024
-  br i1 %cmp14, label %for.body, label %for.cond.cleanup
-
-for.cond.cleanup:                                 ; preds = %for.inc, %entry
-  ret void
-
-for.body:                                         ; preds = %entry, %for.inc
-  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
-  %cmp1 = icmp slt i32 %iv, 1024
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %iv
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %iv
-  %1 = load i32, i32* %arrayidx2, align 4
-  %mul = mul nsw i32 %1, %0
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %iv
-  br i1 %cmp1, label %for.inc, label %if.else
-
-if.else:                                          ; preds = %for.body
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %2, %mul
-  br label %for.inc
-
-for.inc:                                          ; preds = %for.body, %if.else
-  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
-  store i32 %storemerge, i32* %arrayidx3, align 4
-  %dec = add nsw i32 %iv, -1
-  %cmp = icmp ne i32 %dec, %M
-  br i1 %cmp, label %for.body, label %for.cond.cleanup
-}
-
-define void @signed_var_imm_dec_eq(i32* nocapture %a, i32* nocapture readonly %b, i32* nocapture readonly %c, i32 %M) {
-entry:
-  %cmp14 = icmp slt i32 %M, 1024
-  br i1 %cmp14, label %for.body, label %for.cond.cleanup
-
-for.cond.cleanup:                                 ; preds = %for.inc, %entry
-  ret void
-
-for.body:                                         ; preds = %entry, %for.inc
-  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
-  %cmp1 = icmp slt i32 %iv, 1024
-  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %iv
-  %0 = load i32, i32* %arrayidx, align 4
-  %arrayidx2 = getelementptr inbounds i32, i32* %c, i32 %iv
-  %1 = load i32, i32* %arrayidx2, align 4
-  %mul = mul nsw i32 %1, %0
-  %arrayidx3 = getelementptr inbounds i32, i32* %a, i32 %iv
-  br i1 %cmp1, label %for.inc, label %if.else
-
-if.else:                                          ; preds = %for.body
-  %2 = load i32, i32* %arrayidx3, align 4
-  %add = add nsw i32 %2, %mul
-  br label %for.inc
-
-for.inc:                                          ; preds = %for.body, %if.else
-  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
-  store i32 %storemerge, i32* %arrayidx3, align 4
-  %dec = add nsw i32 %iv, -1
-  %cmp = icmp eq i32 %dec, %M
-  br i1 %cmp, label %for.cond.cleanup, label %for.body
-}