Reapply 239795 - [InstCombine] Propagate non-null facts to call parameters

[oota-llvm.git] / test / Transforms / InstCombine / loadstore-metadata.ll

diff --git a/test/Transforms/InstCombine/loadstore-metadata.ll b/test/Transforms/InstCombine/loadstore-metadata.ll
index ad6a11cf6eb11bcb19cd338347b5da3b8a9a103a..a30c0bc852ea115ae901729a7bf75988ace56aaf 100644 (file)
--- a/test/Transforms/InstCombine/loadstore-metadata.ll
+++ b/test/Transforms/InstCombine/loadstore-metadata.ll
@@ -1,11 +1,13 @@
 ; RUN: opt -instcombine -S < %s | FileCheck %s
 
+target datalayout = "e-m:e-p:64:64:64-i64:64-f80:128-n8:16:32:64-S128"
+
 define i32 @test_load_cast_combine_tbaa(float* %ptr) {
 ; Ensure (cast (load (...))) -> (load (cast (...))) preserves TBAA.
 ; CHECK-LABEL: @test_load_cast_combine_tbaa(
-; CHECK: load i32* %{{.*}}, !tbaa !0
+; CHECK: load i32, i32* %{{.*}}, !tbaa !0
 entry:
-  %l = load float* %ptr, !tbaa !0
+  %l = load float, float* %ptr, !tbaa !0
   %c = bitcast float %l to i32
   ret i32 %c
 }
@@ -13,9 +15,9 @@ entry:
 define i32 @test_load_cast_combine_noalias(float* %ptr) {
 ; Ensure (cast (load (...))) -> (load (cast (...))) preserves no-alias metadata.
 ; CHECK-LABEL: @test_load_cast_combine_noalias(
-; CHECK: load i32* %{{.*}}, !alias.scope !2, !noalias !1
+; CHECK: load i32, i32* %{{.*}}, !alias.scope !2, !noalias !1
 entry:
-  %l = load float* %ptr, !alias.scope !2, !noalias !1
+  %l = load float, float* %ptr, !alias.scope !2, !noalias !1
   %c = bitcast float %l to i32
   ret i32 %c
 }
@@ -25,11 +27,11 @@ define float @test_load_cast_combine_range(i32* %ptr) {
 ; would be nice to preserve or update it somehow but this is hard when moving
 ; between types.
 ; CHECK-LABEL: @test_load_cast_combine_range(
-; CHECK: load float* %{{.*}}
+; CHECK: load float, float* %{{.*}}
 ; CHECK-NOT: !range
 ; CHECK: ret float
 entry:
-  %l = load i32* %ptr, !range !5
+  %l = load i32, i32* %ptr, !range !5
   %c = bitcast i32 %l to float
   ret float %c
 }
@@ -37,9 +39,9 @@ entry:
 define i32 @test_load_cast_combine_invariant(float* %ptr) {
 ; Ensure (cast (load (...))) -> (load (cast (...))) preserves invariant metadata.
 ; CHECK-LABEL: @test_load_cast_combine_invariant(
-; CHECK: load i32* %{{.*}}, !invariant.load !3
+; CHECK: load i32, i32* %{{.*}}, !invariant.load !3
 entry:
-  %l = load float* %ptr, !invariant.load !3
+  %l = load float, float* %ptr, !invariant.load !3
   %c = bitcast float %l to i32
   ret i32 %c
 }
@@ -48,9 +50,9 @@ define i32 @test_load_cast_combine_nontemporal(float* %ptr) {
 ; Ensure (cast (load (...))) -> (load (cast (...))) preserves nontemporal
 ; metadata.
 ; CHECK-LABEL: @test_load_cast_combine_nontemporal(
-; CHECK: load i32* %{{.*}}, !nontemporal !4
+; CHECK: load i32, i32* %{{.*}}, !nontemporal !4
 entry:
-  %l = load float* %ptr, !nontemporal !4
+  %l = load float, float* %ptr, !nontemporal !4
   %c = bitcast float %l to i32
   ret i32 %c
 }
@@ -59,15 +61,15 @@ define void @test_load_cast_combine_loop(float* %src, i32* %dst, i32 %n) {
 ; Ensure (cast (load (...))) -> (load (cast (...))) preserves loop access
 ; metadata.
 ; CHECK-LABEL: @test_load_cast_combine_loop(
-; CHECK: load i32* %{{.*}}, !llvm.mem.parallel_loop_access !1
+; CHECK: load i32, i32* %{{.*}}, !llvm.mem.parallel_loop_access !1
 entry:
   br label %loop
 
 loop:
   %i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
-  %src.gep = getelementptr inbounds float* %src, i32 %i
-  %dst.gep = getelementptr inbounds i32* %dst, i32 %i
-  %l = load float* %src.gep, !llvm.mem.parallel_loop_access !1
+  %src.gep = getelementptr inbounds float, float* %src, i32 %i
+  %dst.gep = getelementptr inbounds i32, i32* %dst, i32 %i
+  %l = load float, float* %src.gep, !llvm.mem.parallel_loop_access !1
   %c = bitcast float %l to i32
   store i32 %c, i32* %dst.gep
   %i.next = add i32 %i, 1
@@ -78,6 +80,31 @@ exit:
   ret void
 }
 
+define void @test_load_cast_combine_nonnull(float** %ptr) {
+; We can't preserve nonnull metadata when converting a load of a pointer to
+; a load of an integer. Instead, we translate it to range metadata.
+; FIXME: We should also transform range metadata back into nonnull metadata.
+; FIXME: This test is very fragile. If any LABEL lines are added after
+; this point, the test will fail, because this test depends on a metadata tuple,
+; which is always emitted at the end of the file. At some point, we should
+; consider an option to the IR printer to emit MD tuples after the function
+; that first uses them--this will allow us to refer to them like this and not
+; have the tests break. For now, this function must always come last in this
+; file, and no LABEL lines are to be added after this point.
+;
+; CHECK-LABEL: @test_load_cast_combine_nonnull(
+; CHECK: %[[V:.*]] = load i64, i64* %{{.*}}, !range ![[MD:[0-9]+]]
+; CHECK-NOT: !nonnull
+; CHECK: store i64 %[[V]], i64*
+entry:
+  %p = load float*, float** %ptr, !nonnull !3
+  %gep = getelementptr float*, float** %ptr, i32 42
+  store float* %p, float** %gep
+  ret void
+}
+
+; This is the metadata tuple that we reference above:
+; CHECK: ![[MD]] = !{i64 1, i64 0}
 !0 = !{ !1, !1, i64 0 }
 !1 = !{ !1 }
 !2 = !{ !2, !1 }