[NFC] Simplify and reduce tests for PR39783

llvm-svn: 347976

3 files changed, 111 insertions, 279 deletions

diff --git a/llvm/test/Transforms/LoopSimplifyCFG/pr39783.ll b/llvm/test/Transforms/LoopSimplifyCFG/pr39783.ll
new file mode 100644
index 00000000000..47b35ac7395
--- /dev/null
+++ b/llvm/test/Transforms/LoopSimplifyCFG/pr39783.ll
@@ -0,0 +1,111 @@
+; XFAIL: *
+; REQUIRES: asserts
+; RUN: opt -march=z13 -S -loop-simplifycfg -enable-mssa-loop-dependency -enable-loop-simplifycfg-term-folding 2>&1 < %s | FileCheck %s
+target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
+
+@global = external dso_local local_unnamed_addr global i8, align 2
+@global.1 = external dso_local local_unnamed_addr global i32, align 4
+@global.2 = external dso_local local_unnamed_addr global i32, align 4
+@global.3 = external dso_local local_unnamed_addr global i16, align 2
+@global.4 = external dso_local local_unnamed_addr global i32, align 4
+
+; CHECK-LABEL: @test_01(
+
+define internal fastcc void @test_01() unnamed_addr {
+bb:
+  %tmp = load i32, i32* @global.2, align 4
+  %tmp1 = icmp eq i32 %tmp, 0
+  br i1 %tmp1, label %bb3, label %bb2
+
+bb2:                                              ; preds = %bb
+  br label %bb7
+
+bb3:                                              ; preds = %bb
+  br label %bb4
+
+bb4:                                              ; preds = %bb6, %bb3
+  br i1 true, label %bb5, label %bb6
+
+bb5:                                              ; preds = %bb4
+  store i16 0, i16* @global.3, align 2
+  br label %bb6
+
+bb6:                                              ; preds = %bb5, %bb4
+  br label %bb4
+
+bb7:                                              ; preds = %bb7, %bb2
+  %tmp8 = phi i32 [ 1, %bb7 ], [ 0, %bb2 ]
+  %tmp9 = icmp eq i32 %tmp8, 0
+  br i1 %tmp9, label %bb7, label %bb10
+
+bb10:                                             ; preds = %bb7
+  br label %bb11
+
+bb11:                                             ; preds = %bb13, %bb10
+  %tmp12 = icmp ult i32 %tmp, 6
+  br i1 %tmp12, label %bb13, label %bb14
+
+bb13:                                             ; preds = %bb11
+  store i32 0, i32* @global.1, align 4
+  br label %bb11
+
+bb14:                                             ; preds = %bb11
+  ret void
+}
+
+@global.5 = external dso_local local_unnamed_addr global i16, align 2
+
+declare dso_local void @spam() local_unnamed_addr
+
+declare dso_local void @blam() local_unnamed_addr
+
+declare dso_local i64 @quux.1() local_unnamed_addr
+
+declare dso_local void @bar() local_unnamed_addr
+
+; CHECK-LABEL: @test_02(
+
+define dso_local void @test_02(i8 signext %arg) local_unnamed_addr {
+bb:
+  br label %bb1
+
+bb1:                                              ; preds = %bb16, %bb
+  %tmp = phi i8 [ %arg, %bb ], [ %tmp17, %bb16 ]
+  %tmp2 = load i16, i16* @global.5, align 2
+  %tmp3 = icmp ugt i16 %tmp2, 56
+  br i1 %tmp3, label %bb4, label %bb18
+
+bb4:                                              ; preds = %bb1
+  %tmp5 = tail call i64 @quux.1()
+  %tmp6 = icmp eq i64 %tmp5, 0
+  br i1 %tmp6, label %bb13, label %bb7
+
+bb7:                                              ; preds = %bb4
+  br label %bb8
+
+bb8:                                              ; preds = %bb8, %bb7
+  %tmp9 = phi i32 [ 26, %bb7 ], [ %tmp10, %bb8 ]
+  tail call void @bar()
+  %tmp10 = add nsw i32 %tmp9, -1
+  %tmp11 = icmp eq i32 %tmp10, 12
+  br i1 %tmp11, label %bb12, label %bb8
+
+bb12:                                             ; preds = %bb8
+  br i1 false, label %bb14, label %bb16
+
+bb13:                                             ; preds = %bb4
+  tail call void @spam()
+  br label %bb14
+
+bb14:                                             ; preds = %bb13, %bb12
+  %tmp15 = phi i8 [ -23, %bb12 ], [ %tmp, %bb13 ]
+  tail call void @blam()
+  br label %bb16
+
+bb16:                                             ; preds = %bb14, %bb12
+  %tmp17 = phi i8 [ %tmp15, %bb14 ], [ -23, %bb12 ]
+  br label %bb1
+
+bb18:                                             ; preds = %bb1
+  ret void
+}
diff --git a/llvm/test/Transforms/LoopSimplifyCFG/pr39783_1.ll b/llvm/test/Transforms/LoopSimplifyCFG/pr39783_1.ll
deleted file mode 100644
index fbd295b583a..00000000000
--- a/llvm/test/Transforms/LoopSimplifyCFG/pr39783_1.ll
+++ /dev/null
@@ -1,134 +0,0 @@
-; XFAIL: *
-; RUN: opt -march=z13 -S -O3 -enable-simple-loop-unswitch -enable-mssa-loop-dependency -enable-loop-simplifycfg-term-folding 2>&1 < %s | FileCheck %s
-; CHECK-LABEL: @main(
-
-target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
-
-@g_45 = external dso_local global i8, align 2
-@g_182 = external dso_local global i32, align 4
-@g_277 = external dso_local global i32, align 4
-@g_1135 = external dso_local global i16, align 2
-@g_2998 = external dso_local global i32, align 4
-
-; Function Attrs: nounwind
-define dso_local signext i32 @main(i32 signext %arg, i8** %arg1) #0 {
-bb:
-  %tmp = call signext i32 @0()
-  unreachable
-}
-
-; Function Attrs: nounwind
-define internal signext i32 @0() #0 {
-bb:
-  %tmp = call signext i32 @1(i32 zeroext 0, i64 undef)
-  ret i32 undef
-}
-
-; Function Attrs: nounwind
-define internal signext i32 @1(i32 zeroext %arg, i64 %arg1) #0 {
-bb:
-  %tmp = alloca i32, align 4
-  %tmp2 = alloca i32, align 4
-  store i32 %arg, i32* %tmp, align 4, !tbaa !1
-  br label %bb3
-
-bb3:                                              ; preds = %bb42, %bb
-  store i32 48, i32* %tmp2, align 4
-  %tmp4 = load i32, i32* %tmp2, align 4
-  %tmp5 = icmp eq i32 %tmp4, 48
-  br i1 %tmp5, label %bb6, label %bb42
-
-bb6:                                              ; preds = %bb9, %bb3
-  %tmp7 = load i32, i32* @g_277, align 4, !tbaa !1
-  %tmp8 = icmp ule i32 %tmp7, 0
-  br i1 %tmp8, label %bb9, label %bb16
-
-bb9:                                              ; preds = %bb15, %bb6
-  %tmp10 = icmp sle i32 0, 5
-  %tmp11 = load i32, i32* %tmp, align 4, !tbaa !1
-  br i1 %tmp10, label %bb12, label %bb6
-
-bb12:                                             ; preds = %bb9
-  %tmp13 = icmp ne i32 %tmp11, 0
-  br i1 %tmp13, label %bb15, label %bb14
-
-bb14:                                             ; preds = %bb12
-  store i16 0, i16* @g_1135, align 2, !tbaa !5
-  br label %bb15
-
-bb15:                                             ; preds = %bb14, %bb12
-  br label %bb9
-
-bb16:                                             ; preds = %bb20, %bb6
-  %tmp17 = load i32, i32* %tmp, align 4, !tbaa !1
-  %tmp18 = icmp ule i32 %tmp17, 0
-  br i1 %tmp18, label %bb19, label %bb22
-
-bb19:                                             ; preds = %bb19, %bb16
-  br i1 undef, label %bb19, label %bb20
-
-bb20:                                             ; preds = %bb19
-  %tmp21 = add i32 0, 1
-  store i32 %tmp21, i32* %tmp, align 4, !tbaa !1
-  br label %bb16
-
-bb22:                                             ; preds = %bb40, %bb16
-  %tmp23 = load i32, i32* @g_277, align 4, !tbaa !1
-  %tmp24 = icmp ule i32 %tmp23, 5
-  br i1 %tmp24, label %bb25, label %bb42
-
-bb25:                                             ; preds = %bb22
-  store i32 0, i32* @g_182, align 4, !tbaa !1
-  br label %bb26
-
-bb26:                                             ; preds = %bb29, %bb25
-  %tmp27 = load i32, i32* @g_182, align 4, !tbaa !1
-  %tmp28 = icmp ule i32 %tmp27, 0
-  br i1 %tmp28, label %bb29, label %bb31
-
-bb29:                                             ; preds = %bb26
-  %tmp30 = load i32*, i32** undef, align 8, !tbaa !7
-  br i1 undef, label %bb26, label %bb40
-
-bb31:                                             ; preds = %bb35, %bb26
-  %tmp32 = load i32, i32* @g_2998, align 4, !tbaa !1
-  %tmp33 = icmp sle i32 %tmp32, 5
-  br i1 %tmp33, label %bb34, label %bb39
-
-bb34:                                             ; preds = %bb34, %bb31
-  br i1 undef, label %bb34, label %bb35
-
-bb35:                                             ; preds = %bb35, %bb34
-  %tmp36 = load i8, i8* @g_45, align 2, !tbaa !9
-  %tmp37 = zext i8 %tmp36 to i32
-  %tmp38 = icmp sle i32 %tmp37, 5
-  br i1 %tmp38, label %bb35, label %bb31
-
-bb39:                                             ; preds = %bb31
-  store i32 0, i32* %tmp2, align 4
-  br label %bb40
-
-bb40:                                             ; preds = %bb39, %bb29
-  %tmp41 = icmp eq i32 0, 0
-  br i1 %tmp41, label %bb22, label %bb42
-
-bb42:                                             ; preds = %bb40, %bb22, %bb3
-  %tmp43 = load i32, i32* %tmp2, align 4
-  %tmp44 = icmp eq i32 %tmp43, 0
-  br i1 %tmp44, label %bb3, label %bb45
-
-bb45:                                             ; preds = %bb42
-  ret i32 undef
-}
-
-attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="z13" "target-features"="+transactional-execution,+vector" "unsafe-fp-math"="false" "use-soft-float"="false" }
-
-!1 = !{!2, !2, i64 0}
-!2 = !{!"int", !3, i64 0}
-!3 = !{!"omnipotent char", !4, i64 0}
-!4 = !{!"Simple C/C++ TBAA"}
-!5 = !{!6, !6, i64 0}
-!6 = !{!"short", !3, i64 0}
-!7 = !{!8, !8, i64 0}
-!8 = !{!"any pointer", !3, i64 0}
-!9 = !{!3, !3, i64 0}
diff --git a/llvm/test/Transforms/LoopSimplifyCFG/pr39783_2.ll b/llvm/test/Transforms/LoopSimplifyCFG/pr39783_2.ll
deleted file mode 100644
index eec33ceec40..00000000000
--- a/llvm/test/Transforms/LoopSimplifyCFG/pr39783_2.ll
+++ /dev/null
@@ -1,145 +0,0 @@
-; XFAIL: *
-; RUN: opt  -S -march=z13 -O3 -enable-simple-loop-unswitch -enable-mssa-loop-dependency -enable-loop-simplifycfg-term-folding 2>&1 < %s | FileCheck %s
-; CHECK-LABEL: @safe_sub_func_uint64_t_u_u(
-
-target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
-
-@g_57 = external dso_local global i16, align 2
-
-; Function Attrs: nounwind
-define dso_local void @main() #0 {
-bb:
-  call void @func_1()
-  unreachable
-}
-
-; Function Attrs: nounwind
-define dso_local void @func_1() #0 {
-bb:
-  call void @func_25()
-  unreachable
-}
-
-; Function Attrs: nounwind
-declare dso_local void @safe_lshift_func_int16_t_s_u() #0
-
-; Function Attrs: nounwind
-declare dso_local void @safe_mul_func_int8_t_s_s() #0
-
-; Function Attrs: nounwind
-define dso_local void @func_25() #0 {
-bb:
-  call void @func_50()
-  unreachable
-}
-
-; Function Attrs: nounwind
-define dso_local void @func_50() #0 {
-bb:
-  call void @func_76(i8 signext undef)
-  unreachable
-}
-
-; Function Attrs: nounwind
-define dso_local void @safe_lshift_func_uint8_t_u_u() #0 {
-bb:
-  ret void
-}
-
-; Function Attrs: nounwind
-declare dso_local i64 @safe_sub_func_uint64_t_u_u() #0
-
-; Function Attrs: nounwind
-declare dso_local void @safe_mod_func_uint64_t_u_u() #0
-
-; Function Attrs: nounwind
-define dso_local void @func_76(i8 signext %arg) #0 {
-bb:
-  %tmp = alloca i8, align 1
-  %tmp1 = alloca i32, align 4
-  %tmp2 = alloca i32, align 4
-  store i8 %arg, i8* %tmp, align 1, !tbaa !1
-  br label %bb3
-
-bb3:                                              ; preds = %bb29, %bb
-  br label %bb4
-
-bb4:                                              ; preds = %bb28, %bb3
-  %tmp5 = load i16, i16* @g_57, align 2, !tbaa !4
-  %tmp6 = zext i16 %tmp5 to i32
-  %tmp7 = icmp sgt i32 %tmp6, 56
-  br i1 %tmp7, label %bb8, label %bb29
-
-bb8:                                              ; preds = %bb4
-  %tmp9 = call i64 @safe_sub_func_uint64_t_u_u()
-  %tmp10 = icmp ne i64 %tmp9, 0
-  br i1 %tmp10, label %bb11, label %bb25
-
-bb11:                                             ; preds = %bb8
-  store i32 26, i32* %tmp1, align 4, !tbaa !6
-  br label %bb12
-
-bb12:                                             ; preds = %bb15, %bb11
-  %tmp13 = load i32, i32* %tmp1, align 4, !tbaa !6
-  %tmp14 = icmp ne i32 %tmp13, 12
-  br i1 %tmp14, label %bb15, label %bb18
-
-bb15:                                             ; preds = %bb12
-  store i8 -23, i8* %tmp, align 1, !tbaa !1
-  call void @safe_mod_func_uint64_t_u_u()
-  %tmp16 = load i32, i32* %tmp1, align 4, !tbaa !6
-  %tmp17 = add nsw i32 %tmp16, -1
-  store i32 %tmp17, i32* %tmp1, align 4, !tbaa !6
-  br label %bb12
-
-bb18:                                             ; preds = %bb12
-  %tmp19 = load i8, i8* %tmp, align 1, !tbaa !1
-  %tmp20 = icmp ne i8 %tmp19, 0
-  br i1 %tmp20, label %bb21, label %bb22
-
-bb21:                                             ; preds = %bb18
-  store i32 7, i32* %tmp2, align 4
-  br label %bb22
-
-bb22:                                             ; preds = %bb21, %bb18
-  %tmp23 = load i32, i32* %tmp2, align 4
-  %tmp24 = icmp eq i32 %tmp23, 0
-  br i1 %tmp24, label %bb26, label %bb27
-
-bb25:                                             ; preds = %bb8
-  call void @safe_lshift_func_int16_t_s_u()
-  store i32 0, i32* %tmp2, align 4
-  switch i32 undef, label %bb30 [
-    i32 0, label %bb26
-    i32 7, label %bb28
-  ]
-
-bb26:                                             ; preds = %bb25, %bb22
-  call void @safe_mul_func_int8_t_s_s()
-  br label %bb27
-
-bb27:                                             ; preds = %bb26, %bb22
-  switch i32 undef, label %bb30 [
-    i32 0, label %bb28
-    i32 7, label %bb28
-  ]
-
-bb28:                                             ; preds = %bb27, %bb27, %bb25
-  br label %bb4
-
-bb29:                                             ; preds = %bb4
-  br i1 undef, label %bb3, label %bb30
-
-bb30:                                             ; preds = %bb29, %bb27, %bb25
-  ret void
-}
-
-attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="z13" "target-features"="+transactional-execution,+vector" "unsafe-fp-math"="false" "use-soft-float"="false" }
-
-!1 = !{!2, !2, i64 0}
-!2 = !{!"omnipotent char", !3, i64 0}
-!3 = !{!"Simple C/C++ TBAA"}
-!4 = !{!5, !5, i64 0}
-!5 = !{!"short", !2, i64 0}
-!6 = !{!7, !7, i64 0}
-!7 = !{!"int", !2, i64 0}