Test source: git
Source: <stdin> ---------------------------------------- @Q = global 8 bytes, align 8 define double @test(i1 %c, * %p) { %entry: br i1 %c, label %if, label %end %if: %__constexpr_0 = bitcast * @Q to * %load = load i64, * %__constexpr_0, align 8 br label %end %end: %phi = phi i64 [ 0, %entry ], [ %load, %if ] store i64 %phi, * %p, align 8 %cast = bitcast i64 %phi to double ret double %cast } => @Q = global 8 bytes, align 8 define double @test(i1 %c, * %p) { %entry: br i1 %c, label %if, label %end %if: %load1 = load double, * @Q, align 8 br label %end %end: %0 = phi double [ 0.000000, %entry ], [ %load1, %if ] %1 = bitcast * %p to * store double %0, * %1, align 8 ret double %0 } Transformation doesn't verify! ERROR: Mismatch in memory Example: i1 %c = #x1 (1) * %p = pointer(non-local, block_id=1, offset=0) Source: * %__constexpr_0 = pointer(non-local, block_id=1, offset=0) i64 %load = #x7ff0200000000000 (9218903621599494144) i64 %phi = #x7ff0200000000000 (9218903621599494144) 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 > align: 4 alloc type: 0 Target: double %load1 = NaN double %0 = NaN * %1 = pointer(non-local, block_id=1, offset=0) Mismatch in pointer(non-local, block_id=1, offset=0) Source value: #x7ff0200000000000 Target value: #x7ff0000000001000 ------------------- SMT STATS ------------------- Num queries: 4 Num invalid: 0 Num skips: 0 Num trivial: 3 (42.9%) Num timeout: 0 (0.0%) Num errors: 0 (0.0%) Num SAT: 2 (50.0%) Num UNSAT: 2 (50.0%)
+ : 'RUN: at line 2' + /home/nlopes/alive2/build/opt-alive.sh -S -instcombine + /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/InstCombine/bitcast-phi-uselistorder.ll Alive2: Transform doesn't verify; aborting! FileCheck error: '<stdin>' is empty. FileCheck command line: /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/InstCombine/bitcast-phi-uselistorder.ll