derek.holloway
7502bf64a4
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113 lines
4.4 KiB
LLVM
113 lines
4.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=nsan -nsan-shadow-type-mapping=dqq -S | FileCheck %s
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target 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"
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; Tests with more involved control flow to check lazy construction of the
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; shadow values.
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define float @forward_use() sanitize_numerical_stability {
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; CHECK-LABEL: @forward_use(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BLOCK1:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[D:%.*]] = fadd float [[B:%.*]], 2.000000e+00
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; CHECK-NEXT: [[TMP0:%.*]] = fadd double [[TMP2:%.*]], 2.000000e+00
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; CHECK-NEXT: br label [[BLOCK1]]
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; CHECK: block1:
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; CHECK-NEXT: [[A:%.*]] = phi float [ [[D]], [[LOOP:%.*]] ], [ 1.000000e+00, [[ENTRY:%.*]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = phi double [ [[TMP0]], [[LOOP]] ], [ 1.000000e+00, [[ENTRY]] ]
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; CHECK-NEXT: [[B]] = fadd float [[A]], 1.000000e+00
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; CHECK-NEXT: [[TMP2]] = fadd double [[TMP1]], 1.000000e+00
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; CHECK-NEXT: br label [[LOOP]]
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;
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entry:
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br label %block1
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loop:
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%d = fadd float %b, 2.0 ; this is a forward reference, requiring shadow(%b) to be available.
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br label %block1
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block1:
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%a = phi float [ %d, %loop], [ 1.0, %entry ]
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%b = fadd float %a, 1.0
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br label %loop
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}
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define float @forward_use_with_load(ptr %p) sanitize_numerical_stability {
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; CHECK-LABEL: @forward_use_with_load(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BLOCK1:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[D:%.*]] = fadd float [[B:%.*]], 2.000000e+00
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; CHECK-NEXT: [[TMP0:%.*]] = fadd double [[TMP10:%.*]], 2.000000e+00
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; CHECK-NEXT: br label [[BLOCK1]]
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; CHECK: block1:
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; CHECK-NEXT: [[A:%.*]] = phi float [ [[D]], [[LOOP:%.*]] ], [ 1.000000e+00, [[ENTRY:%.*]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = phi double [ [[TMP0]], [[LOOP]] ], [ 1.000000e+00, [[ENTRY]] ]
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; CHECK-NEXT: [[L:%.*]] = load float, ptr [[P:%.*]], align 4
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; CHECK-NEXT: [[TMP2:%.*]] = call ptr @__nsan_get_shadow_ptr_for_float_load(ptr [[P]], i64 1)
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; CHECK-NEXT: [[TMP3:%.*]] = icmp eq ptr [[TMP2]], null
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; CHECK-NEXT: br i1 [[TMP3]], label [[TMP6:%.*]], label [[TMP4:%.*]]
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; CHECK: 4:
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; CHECK-NEXT: [[TMP5:%.*]] = load double, ptr [[TMP2]], align 1
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; CHECK-NEXT: br label [[TMP8:%.*]]
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; CHECK: 6:
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; CHECK-NEXT: [[TMP7:%.*]] = fpext float [[L]] to double
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; CHECK-NEXT: br label [[TMP8]]
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; CHECK: 8:
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; CHECK-NEXT: [[TMP9:%.*]] = phi double [ [[TMP5]], [[TMP4]] ], [ [[TMP7]], [[TMP6]] ]
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; CHECK-NEXT: [[B]] = fadd float [[L]], 1.000000e+00
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; CHECK-NEXT: [[TMP10]] = fadd double [[TMP9]], 1.000000e+00
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; CHECK-NEXT: br label [[LOOP]]
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;
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entry:
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br label %block1
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loop:
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%d = fadd float %b, 2.0 ; this is a forward reference, requiring shadow(%b) to be available.
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br label %block1
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block1:
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%a = phi float [ %d, %loop], [ 1.0, %entry ]
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%l = load float, ptr %p ; the load creates a new block
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%b = fadd float %l, 1.0 ; this requires shadow(%l).
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br label %loop
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}
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define float @forward_use_with_two_uses() sanitize_numerical_stability {
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; CHECK-LABEL: @forward_use_with_two_uses(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[BLOCK1:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[D:%.*]] = fadd float [[B:%.*]], 2.000000e+00
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; CHECK-NEXT: [[TMP0:%.*]] = fadd double [[TMP4:%.*]], 2.000000e+00
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; CHECK-NEXT: br label [[BLOCK1]]
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; CHECK: block1:
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; CHECK-NEXT: [[A:%.*]] = phi float [ [[D]], [[LOOP:%.*]] ], [ 1.000000e+00, [[ENTRY:%.*]] ]
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; CHECK-NEXT: [[TMP1:%.*]] = phi double [ [[TMP0]], [[LOOP]] ], [ 1.000000e+00, [[ENTRY]] ]
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; CHECK-NEXT: [[T1:%.*]] = fadd float [[A]], 1.000000e+00
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; CHECK-NEXT: [[TMP2:%.*]] = fadd double [[TMP1]], 1.000000e+00
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; CHECK-NEXT: [[T2:%.*]] = fadd float [[T1]], 3.000000e+00
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; CHECK-NEXT: [[TMP3:%.*]] = fadd double [[TMP2]], 3.000000e+00
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; CHECK-NEXT: [[B]] = fadd float [[T1]], [[T2]]
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; CHECK-NEXT: [[TMP4]] = fadd double [[TMP2]], [[TMP3]]
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; CHECK-NEXT: br label [[LOOP]]
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;
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entry:
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br label %block1
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loop:
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%d = fadd float %b, 2.0 ; this is a forward reference, requiring shadow(%b) to be available.
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br label %block1
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block1:
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%a = phi float [ %d, %loop], [ 1.0, %entry ]
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%t1 = fadd float %a, 1.0
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%t2 = fadd float %t1, 3.0 ; this requires shadow(%t1)
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%b = fadd float %t1, %t2 ; this requires shadow(%t2) and shadow(%t1).
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br label %loop
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}
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