Test source: git
Source: <stdin> ---------------------------------------- @Q = global 8 bytes, align 8 define double @test(i1 %c, ptr %p) { %entry: br i1 %c, label %if, label %end %if: %__constexpr_0 = bitcast ptr @Q to ptr %load = load i64, ptr %__constexpr_0, align 8 br label %end %end: %phi = phi i64 [ 0, %entry ], [ %load, %if ] store i64 %phi, ptr %p, align 8 %cast = bitcast i64 %phi to double ret double %cast } => @Q = global 8 bytes, align 8 define double @test(i1 %c, ptr %p) { %entry: br i1 %c, label %if, label %end %if: %load1 = load double, ptr @Q, align 8 br label %end %end: %0 = phi double [ 0.000000, %entry ], [ %load1, %if ] %1 = bitcast ptr %p to ptr store double %0, ptr %1, align 8 ret double %0 } Transformation doesn't verify! ERROR: Mismatch in memory Example: i1 %c = #x1 (1) ptr %p = pointer(non-local, block_id=2, offset=48) Source: >> Jump to %if ptr %__constexpr_0 = pointer(non-local, block_id=1, offset=0) i64 %load = #x7ff000000000a084 (9218868437227446404) >> Jump to %end i64 %phi = #x7ff000000000a084 (9218868437227446404) double %cast = NaN SOURCE MEMORY STATE =================== NON-LOCAL BLOCKS: Block 0 > size: 0 align: 8 alloc type: 0 Block 1 > size: 8 align: 8 alloc type: 0 Block 2 > size: 177 align: 64 alloc type: 0 Target: >> Jump to %if double %load1 = NaN >> Jump to %end double %0 = NaN ptr %1 = pointer(non-local, block_id=2, offset=48) Mismatch in pointer(non-local, block_id=2, offset=48) Source value: #x7ff000000000a084 Target value: #x7ff0000000002004 ------------------- SMT STATS ------------------- Num queries: 6 Num invalid: 0 Num skips: 0 Num trivial: 12 (66.7%) Num timeout: 0 (0.0%) Num errors: 0 (0.0%) Num SAT: 4 (66.7%) Num UNSAT: 2 (33.3%) Alive2: Transform doesn't verify; aborting!
+ : 'RUN: at line 2' + /home/nuno/alive2/build/opt-alive.sh -S -passes=instcombine + /home/nuno/llvm/build/bin/FileCheck /home/nuno/llvm/llvm/test/Transforms/InstCombine/bitcast-phi-uselistorder.ll FileCheck error: '<stdin>' is empty. FileCheck command line: /home/nuno/llvm/build/bin/FileCheck /home/nuno/llvm/llvm/test/Transforms/InstCombine/bitcast-phi-uselistorder.ll
NOTE: This test would pass if undef didn't exist!