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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=nsan -nsan-shadow-type-mapping=dqq -S | FileCheck %s3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"4 5; Tests with more involved control flow to check lazy construction of the6; shadow values.7 8define float @forward_use() sanitize_numerical_stability {9; CHECK-LABEL: @forward_use(10; CHECK-NEXT: entry:11; CHECK-NEXT: br label [[BLOCK1:%.*]]12; CHECK: loop:13; CHECK-NEXT: [[D:%.*]] = fadd float [[B:%.*]], 2.000000e+0014; CHECK-NEXT: [[TMP0:%.*]] = fadd double [[TMP2:%.*]], 2.000000e+0015; CHECK-NEXT: br label [[BLOCK1]]16; CHECK: block1:17; CHECK-NEXT: [[A:%.*]] = phi float [ [[D]], [[LOOP:%.*]] ], [ 1.000000e+00, [[ENTRY:%.*]] ]18; CHECK-NEXT: [[TMP1:%.*]] = phi double [ [[TMP0]], [[LOOP]] ], [ 1.000000e+00, [[ENTRY]] ]19; CHECK-NEXT: [[B]] = fadd float [[A]], 1.000000e+0020; CHECK-NEXT: [[TMP2]] = fadd double [[TMP1]], 1.000000e+0021; CHECK-NEXT: br label [[LOOP]]22;23 24entry:25 br label %block126 27loop:28 %d = fadd float %b, 2.0 ; this is a forward reference, requiring shadow(%b) to be available.29 br label %block130 31block1:32 %a = phi float [ %d, %loop], [ 1.0, %entry ]33 %b = fadd float %a, 1.034 br label %loop35}36 37define float @forward_use_with_load(float* %p) sanitize_numerical_stability {38; CHECK-LABEL: @forward_use_with_load(39; CHECK-NEXT: entry:40; CHECK-NEXT: br label [[BLOCK1:%.*]]41; CHECK: loop:42; CHECK-NEXT: [[D:%.*]] = fadd float [[B:%.*]], 2.000000e+0043; CHECK-NEXT: [[TMP0:%.*]] = fadd double [[TMP10:%.*]], 2.000000e+0044; CHECK-NEXT: br label [[BLOCK1]]45; CHECK: block1:46; CHECK-NEXT: [[A:%.*]] = phi float [ [[D]], [[LOOP:%.*]] ], [ 1.000000e+00, [[ENTRY:%.*]] ]47; CHECK-NEXT: [[TMP1:%.*]] = phi double [ [[TMP0]], [[LOOP]] ], [ 1.000000e+00, [[ENTRY]] ]48; CHECK-NEXT: [[L:%.*]] = load float, ptr [[P:%.*]], align 449; CHECK-NEXT: [[TMP2:%.*]] = call ptr @__nsan_get_shadow_ptr_for_float_load(ptr [[P]], i64 1)50; CHECK-NEXT: [[TMP3:%.*]] = icmp eq ptr [[TMP2]], null51; CHECK-NEXT: br i1 [[TMP3]], label [[TMP6:%.*]], label [[TMP4:%.*]]52; CHECK: 4:53; CHECK-NEXT: [[TMP5:%.*]] = load double, ptr [[TMP2]], align 154; CHECK-NEXT: br label [[TMP8:%.*]]55; CHECK: 6:56; CHECK-NEXT: [[TMP7:%.*]] = fpext float [[L]] to double57; CHECK-NEXT: br label [[TMP8]]58; CHECK: 8:59; CHECK-NEXT: [[TMP9:%.*]] = phi double [ [[TMP5]], [[TMP4]] ], [ [[TMP7]], [[TMP6]] ]60; CHECK-NEXT: [[B]] = fadd float [[L]], 1.000000e+0061; CHECK-NEXT: [[TMP10]] = fadd double [[TMP9]], 1.000000e+0062; CHECK-NEXT: br label [[LOOP]]63;64 65entry:66 br label %block167 68loop:69 %d = fadd float %b, 2.0 ; this is a forward reference, requiring shadow(%b) to be available.70 br label %block171 72block1:73 %a = phi float [ %d, %loop], [ 1.0, %entry ]74 %l = load float, float* %p ; the load creates a new block75 %b = fadd float %l, 1.0 ; this requires shadow(%l).76 br label %loop77}78 79define float @forward_use_with_two_uses() sanitize_numerical_stability {80; CHECK-LABEL: @forward_use_with_two_uses(81; CHECK-NEXT: entry:82; CHECK-NEXT: br label [[BLOCK1:%.*]]83; CHECK: loop:84; CHECK-NEXT: [[D:%.*]] = fadd float [[B:%.*]], 2.000000e+0085; CHECK-NEXT: [[TMP0:%.*]] = fadd double [[TMP4:%.*]], 2.000000e+0086; CHECK-NEXT: br label [[BLOCK1]]87; CHECK: block1:88; CHECK-NEXT: [[A:%.*]] = phi float [ [[D]], [[LOOP:%.*]] ], [ 1.000000e+00, [[ENTRY:%.*]] ]89; CHECK-NEXT: [[TMP1:%.*]] = phi double [ [[TMP0]], [[LOOP]] ], [ 1.000000e+00, [[ENTRY]] ]90; CHECK-NEXT: [[T1:%.*]] = fadd float [[A]], 1.000000e+0091; CHECK-NEXT: [[TMP2:%.*]] = fadd double [[TMP1]], 1.000000e+0092; CHECK-NEXT: [[T2:%.*]] = fadd float [[T1]], 3.000000e+0093; CHECK-NEXT: [[TMP3:%.*]] = fadd double [[TMP2]], 3.000000e+0094; CHECK-NEXT: [[B]] = fadd float [[T1]], [[T2]]95; CHECK-NEXT: [[TMP4]] = fadd double [[TMP2]], [[TMP3]]96; CHECK-NEXT: br label [[LOOP]]97;98 99entry:100 br label %block1101 102loop:103 %d = fadd float %b, 2.0 ; this is a forward reference, requiring shadow(%b) to be available.104 br label %block1105 106block1:107 %a = phi float [ %d, %loop], [ 1.0, %entry ]108 %t1 = fadd float %a, 1.0109 %t2 = fadd float %t1, 3.0 ; this requires shadow(%t1)110 %b = fadd float %t1, %t2 ; this requires shadow(%t2) and shadow(%t1).111 br label %loop112}113