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edf9ca06fc
This enables array value propagation in array literal loops like:
for e in [2,3,4] {
r += e
}
Allowing us to completely get rid of the array.
rdar://19958821
SR-203
73 lines
1.9 KiB
Plaintext
73 lines
1.9 KiB
Plaintext
// RUN: %target-sil-opt -enable-sil-verify-all -loop-unroll %s | FileCheck %s
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sil_stage canonical
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import Builtin
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// CHECK-LABEL: sil @loop_unroll_1
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// CHECK: bb0
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// CHECK: br bb1
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// CHECK: bb1
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// CHECK: builtin "sadd_with_overflow_Int64
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// CHECK: cond_br {{.*}}, bb2, bb3
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// CHECK: bb2:
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// CHECK: return
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// CHECK: bb3
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// CHECK: builtin "sadd_with_overflow_Int64
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// CHECK: br bb2
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sil @loop_unroll_1 : $@convention(thin) () -> () {
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bb0:
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%0 = integer_literal $Builtin.Int64, 0
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%1 = integer_literal $Builtin.Int64, 1
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%2 = integer_literal $Builtin.Int64, 2
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%3 = integer_literal $Builtin.Int1, 1
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br bb1(%0 : $Builtin.Int64)
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bb1(%4 : $Builtin.Int64):
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%5 = builtin "sadd_with_overflow_Int64"(%4 : $Builtin.Int64, %1 : $Builtin.Int64, %3 : $Builtin.Int1) : $(Builtin.Int64, Builtin.Int1)
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%6 = tuple_extract %5 : $(Builtin.Int64, Builtin.Int1), 0
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%7 = builtin "cmp_eq_Int64"(%6 : $Builtin.Int64, %2 : $Builtin.Int64) : $Builtin.Int1
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cond_br %7, bb2, bb1(%6 : $Builtin.Int64)
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bb2:
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%8 = tuple()
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return %8 : $()
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}
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// CHECK-LABEL: sil @loop_unroll_2
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// CHECK: bb0:
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// CHECK: br bb1
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// CHECK: bb1
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// CHECK: = builtin "sadd_with_overflow_Int64
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// CHECK: cond_br {{.*}}, bb3, bb2
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// CHECK: bb2:
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// CHECK: br bb4
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// CHECK: bb3:
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// CHECK: return
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// CHECK: bb4
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// CHECK: = builtin "sadd_with_overflow_Int64
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// CHECK: br bb3
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sil @loop_unroll_2 : $@convention(thin) () -> () {
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bb0:
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%0 = integer_literal $Builtin.Int64, 0
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%1 = integer_literal $Builtin.Int64, 1
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%2 = integer_literal $Builtin.Int64, 2
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%3 = integer_literal $Builtin.Int1, 1
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br bb1(%0 : $Builtin.Int64)
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bb1(%4 : $Builtin.Int64):
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%5 = builtin "sadd_with_overflow_Int64"(%4 : $Builtin.Int64, %1 : $Builtin.Int64, %3 : $Builtin.Int1) : $(Builtin.Int64, Builtin.Int1)
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%6 = tuple_extract %5 : $(Builtin.Int64, Builtin.Int1), 0
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%7 = builtin "cmp_eq_Int64"(%6 : $Builtin.Int64, %2 : $Builtin.Int64) : $Builtin.Int1
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cond_br %7, bb3, bb2
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bb2:
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br bb1(%6 : $Builtin.Int64)
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bb3:
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%8 = tuple()
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return %8 : $()
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}
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