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Diffstat (limited to 'llvm/test/Transforms/InstSimplify/assume.ll')
-rw-r--r-- | llvm/test/Transforms/InstSimplify/assume.ll | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/llvm/test/Transforms/InstSimplify/assume.ll b/llvm/test/Transforms/InstSimplify/assume.ll deleted file mode 100644 index 99b5759e958..00000000000 --- a/llvm/test/Transforms/InstSimplify/assume.ll +++ /dev/null @@ -1,93 +0,0 @@ -; NOTE: Assertions have been autogenerated by update_test_checks.py -; RUN: opt -instsimplify -S < %s 2>&1 -pass-remarks-analysis=.* | FileCheck %s - -; Verify that warnings are emitted for the 2nd and 3rd tests. - -; CHECK: remark: /tmp/s.c:1:13: Detected conflicting code assumptions. -; CHECK: remark: /tmp/s.c:4:10: Detected conflicting code assumptions. -; CHECK: remark: /tmp/s.c:5:50: Detected conflicting code assumptions. - -define void @test1() { -; CHECK-LABEL: @test1( -; CHECK: ret void -; - call void @llvm.assume(i1 1) - ret void - -} - -; The alloca guarantees that the low bits of %a are zero because of alignment. -; The assume says the opposite. The assume is processed last, so that's the -; return value. There's no way to win (we can't undo transforms that happened -; based on half-truths), so just don't crash. - -define i64 @PR31809() !dbg !7 { -; CHECK-LABEL: @PR31809( -; CHECK-NEXT: ret i64 3 -; - %a = alloca i32 - %t1 = ptrtoint i32* %a to i64, !dbg !9 - %cond = icmp eq i64 %t1, 3 - call void @llvm.assume(i1 %cond) - ret i64 %t1 -} - -; Similar to above: there's no way to know which assumption is truthful, -; so just don't crash. The second icmp+assume gets processed later, so that -; determines the return value. - -define i8 @conflicting_assumptions(i8 %x) !dbg !10 { -; CHECK-LABEL: @conflicting_assumptions( -; CHECK-NEXT: call void @llvm.assume(i1 false) -; CHECK-NEXT: [[COND2:%.*]] = icmp eq i8 %x, 4 -; CHECK-NEXT: call void @llvm.assume(i1 [[COND2]]) -; CHECK-NEXT: ret i8 5 -; - %add = add i8 %x, 1, !dbg !11 - %cond1 = icmp eq i8 %x, 3 - call void @llvm.assume(i1 %cond1) - %cond2 = icmp eq i8 %x, 4 - call void @llvm.assume(i1 %cond2) - ret i8 %add -} - -; Another case of conflicting assumptions. This would crash because we'd -; try to set more known bits than existed in the known bits struct. - -define void @PR36270(i32 %b) !dbg !13 { -; CHECK-LABEL: @PR36270( -; CHECK-NEXT: tail call void @llvm.assume(i1 false) -; CHECK-NEXT: unreachable -; - %B7 = xor i32 -1, 2147483647 - %and1 = and i32 %b, 3 - %B12 = lshr i32 %B7, %and1, !dbg !14 - %C1 = icmp ult i32 %and1, %B12 - tail call void @llvm.assume(i1 %C1) - %cmp2 = icmp eq i32 0, %B12 - tail call void @llvm.assume(i1 %cmp2) - unreachable -} - -declare void @llvm.assume(i1) nounwind - -!llvm.dbg.cu = !{!0} -!llvm.module.flags = !{!3, !4, !5} -!llvm.ident = !{!6} - -!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 282540) (llvm/trunk 282542)", isOptimized: true, runtimeVersion: 0, emissionKind: LineTablesOnly, enums: !2) -!1 = !DIFile(filename: "/tmp/s.c", directory: "/tmp") -!2 = !{} -!3 = !{i32 2, !"Dwarf Version", i32 4} -!4 = !{i32 2, !"Debug Info Version", i32 3} -!5 = !{i32 1, !"PIC Level", i32 2} -!6 = !{!"clang version 4.0.0 (trunk 282540) (llvm/trunk 282542)"} -!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !2) -!8 = !DISubroutineType(types: !2) -!9 = !DILocation(line: 1, column: 13, scope: !7) -!10 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !0, retainedNodes: !2) -!11 = !DILocation(line: 4, column: 10, scope: !10) -!12 = !DILocation(line: 4, column: 3, scope: !10) -!13 = distinct !DISubprogram(name: "PR36270", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !0, retainedNodes: !2) -!14 = !DILocation(line: 5, column: 50, scope: !13) - |