Test Failure: Transforms/InstCombine/select_meta.ll

Test source: git

Log:

Source: <stdin>

----------------------------------------
define i32 @foo(i32 %0) {
%1:
  %2 = icmp sgt i32 %0, 2
  %3 = add nsw i32 %0, 20
  %4 = add i32 %0, 4294967276
  %5 = select i1 %2, i32 %3, i32 %4
  ret i32 %5
}
=>
define i32 @foo(i32 %0) {
%1:
  %2 = icmp sgt i32 %0, 2
  %.v = select i1 %2, i32 20, i32 4294967276
  %3 = add i32 %.v, %0
  ret i32 %3
}
Transformation seems to be correct!


----------------------------------------
define i8 @shrink_select(i1 %cond, i32 %x) {
%0:
  %sel = select i1 %cond, i32 %x, i32 42
  %trunc = trunc i32 %sel to i8
  ret i8 %trunc
}
=>
define i8 @shrink_select(i1 %cond, i32 %x) {
%0:
  %1 = trunc i32 %x to i8
  %trunc = select i1 %cond, i8 %1, i8 42
  ret i8 %trunc
}
Transformation seems to be correct!


----------------------------------------
define void @min_max_bitcast(<4 x float> %a, <4 x float> %b, * %ptr1, * %ptr2) {
%0:
  %cmp = fcmp olt <4 x float> %a, %b
  %bc1 = bitcast <4 x float> %a to <4 x i32>
  %bc2 = bitcast <4 x float> %b to <4 x i32>
  %sel1 = select <4 x i1> %cmp, <4 x i32> %bc1, <4 x i32> %bc2
  %sel2 = select <4 x i1> %cmp, <4 x i32> %bc2, <4 x i32> %bc1
  store <4 x i32> %sel1, * %ptr1, align 16
  store <4 x i32> %sel2, * %ptr2, align 16
  ret void
}
=>
define void @min_max_bitcast(<4 x float> %a, <4 x float> %b, * %ptr1, * %ptr2) {
%0:
  %cmp = fcmp olt <4 x float> %a, %b
  %sel1.v = select <4 x i1> %cmp, <4 x float> %a, <4 x float> %b
  %sel2.v = select <4 x i1> %cmp, <4 x float> %b, <4 x float> %a
  %1 = bitcast * %ptr1 to *
  store <4 x float> %sel1.v, * %1, align 16
  %2 = bitcast * %ptr2 to *
  store <4 x float> %sel2.v, * %2, align 16
  ret void
}
Transformation doesn't verify!
ERROR: Timeout


----------------------------------------
define i32 @foo2(i32 %0, i32 %1) {
%2:
  %3 = icmp sgt i32 %0, 2
  %4 = add nsw i32 %0, %1
  %5 = sub nsw i32 %0, %1
  %6 = select i1 %3, i32 %4, i32 %5
  ret i32 %6
}
=>
define i32 @foo2(i32 %0, i32 %1) {
%2:
  %3 = icmp sgt i32 %0, 2
  %4 = sub i32 0, %1
  %.p = select i1 %3, i32 %1, i32 %4
  %5 = add i32 %.p, %0
  ret i32 %5
}
Transformation doesn't verify!
ERROR: Timeout


----------------------------------------
define i64 @test43(i32 %a) {
%0:
  %a_ext = sext i32 %a to i64
  %is_a_nonnegative = icmp sgt i32 %a, 4294967295
  %max = select i1 %is_a_nonnegative, i64 %a_ext, i64 0
  ret i64 %max
}
=>
define i64 @test43(i32 %a) {
%0:
  %a_ext = sext i32 %a to i64
  %1 = icmp sgt i64 %a_ext, 0
  %max = select i1 %1, i64 %a_ext, i64 0
  ret i64 %max
}
Transformation seems to be correct!


----------------------------------------
define <2 x i32> @scalar_select_of_vectors_sext(<2 x i1> %cca, i1 %ccb) {
%0:
  %ccax = sext <2 x i1> %cca to <2 x i32>
  %r = select i1 %ccb, <2 x i32> %ccax, <2 x i32> { 0, 0 }
  ret <2 x i32> %r
}
=>
define <2 x i32> @scalar_select_of_vectors_sext(<2 x i1> %cca, i1 %ccb) {
%0:
  %narrow = select i1 %ccb, <2 x i1> %cca, <2 x i1> { 0, 0 }
  %r = sext <2 x i1> %narrow to <2 x i32>
  ret <2 x i32> %r
}
Transformation seems to be correct!


----------------------------------------
define i16 @t7(i32 %a) {
%0:
  %1 = icmp slt i32 %a, 4294934528
  %2 = trunc i32 %a to i16
  %3 = select i1 %1, i16 %2, i16 32768
  ret i16 %3
}
=>
define i16 @t7(i32 %a) {
%0:
  %1 = icmp slt i32 %a, 4294934528
  %2 = select i1 %1, i32 %a, i32 4294934528
  %3 = trunc i32 %2 to i16
  ret i16 %3
}
Transformation doesn't verify!
ERROR: Timeout


----------------------------------------
define i32 @abs_nabs_x01(i32 %x) {
%0:
  %cmp = icmp sgt i32 %x, 4294967295
  %sub = sub nsw i32 0, %x
  %cond = select i1 %cmp, i32 %sub, i32 %x
  %cmp1 = icmp sgt i32 %cond, 4294967295
  %sub16 = sub nsw i32 0, %cond
  %cond18 = select i1 %cmp1, i32 %cond, i32 %sub16
  ret i32 %cond18
}
=>
define i32 @abs_nabs_x01(i32 %x) {
%0:
  %1 = abs i32 %x, 0
  ret i32 %1
}
Transformation seems to be correct!


----------------------------------------
define <2 x i32> @abs_nabs_x01_vec(<2 x i32> %x) {
%0:
  %cmp = icmp sgt <2 x i32> %x, { 4294967295, 4294967295 }
  %sub = sub nsw <2 x i32> { 0, 0 }, %x
  %cond = select <2 x i1> %cmp, <2 x i32> %sub, <2 x i32> %x
  %cmp1 = icmp sgt <2 x i32> %cond, { 4294967295, 4294967295 }
  %sub16 = sub nsw <2 x i32> { 0, 0 }, %cond
  %cond18 = select <2 x i1> %cmp1, <2 x i32> %cond, <2 x i32> %sub16
  ret <2 x i32> %cond18
}
=>
define <2 x i32> @abs_nabs_x01_vec(<2 x i32> %x) {
%0:
  %1 = abs <2 x i32> %x, 0
  ret <2 x i32> %1
}
Transformation seems to be correct!


----------------------------------------
define i32 @test30(i32 %x, i32 %y) {
%0:
  %cmp = icmp sgt i32 %x, %y
  %cond = select i1 %cmp, i32 %x, i32 %y
  %cmp5 = icmp sgt i32 %cond, %x
  %retval = select i1 %cmp5, i32 %cond, i32 %x
  ret i32 %retval
}
=>
define i32 @test30(i32 %x, i32 %y) {
%0:
  %cmp = icmp sgt i32 %x, %y
  %cond = select i1 %cmp, i32 %x, i32 %y
  ret i32 %cond
}
Transformation doesn't verify!
ERROR: Target's return value is more undefined

Example:
i32 %x = #x7fffffff (2147483647)
i32 %y = undef

Source:
i1 %cmp = any
i32 %cond = any
i1 %cmp5 = #x0 (0)
i32 %retval = #x7fffffff (2147483647)

Target:
i1 %cmp = #x0 (0)
i32 %cond = #x00000000 (0)
Source value: #x7fffffff (2147483647)
Target value: #x00000000 (0)


------------------- SMT STATS -------------------
Num queries: 40
Num invalid: 0
Num skips:   0
Num trivial: 38 (48.7%)
Num timeout: 3 (7.5%)
Num errors:  0 (0.0%)
Num SAT:     11 (27.5%)
Num UNSAT:   26 (65.0%)
Alive2: Transform doesn't verify; aborting!

stderr:

+ : 'RUN: at line 4'
+ /home/nlopes/alive2/build/opt-alive.sh -instcombine -S
+ /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/InstCombine/select_meta.ll

FileCheck error: '<stdin>' is empty.
FileCheck command line:  /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/InstCombine/select_meta.ll

NOTE: This test would pass if undef didn't exist!

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